Yaesu FT-450 OPERATION MANUAL

HF/50 MHZ TRANSCEIVER

FT-450

OPERATION MANUAL

VERTEX STANDARD CO., LTD.

4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan

VERTEX STANDARD

US Headquarters

10900 Walker Street, Cypress, CA 90630, U.S.A.

YAESU EUROPE B.V.

P.O. Box 75525, 1118 ZN Schiphol, The Netherlands

YAESU UK LTD.

Unit 12, Sun Valley Business Park, Winnall Close

Winchester, Hampshire, SO23 0LB, U.K.

VERTEX STANDARD HK LTD.

Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,

Kwun Tong, Kowloon, Hong Kong

VERTEX STANDARD (AUSTRALIA) PTY., LTD.

Normanby Business Park, Unit 14/45 Normanby Road Notting Hill 3168, Victoria, Australia

TABLE OF CONTENTS

GENERAL FEATURE ...........................................	1
FRONT PANEL SWITCHES AND KNOBS ..........	2
DISPLAY INDICATIONS .......................................	6
REAR PANEL JACKS ..........................................	8
SUPPLIED MH-67A8J MICROPHONE .................	9
ACCESSORIES & OPTIONS .............................	10
INSTALLATION ..................................................	11
CONNESTION OF ANTENNA AND POWER SUPPLY ..	11
ABOUT COAXIAL CABLE ...............................................	11
GROUNDING ...................................................................	12
VL-1000 LINEAR AMPLIFIER INTERCONNECTIONS ..	13
INTERFACING TO OTHER LINEAR AMPLIFIER ...........	13
EASY OPERATION ............................................	14
HOW TO USE THE [DSP/SEL] KNOB ............................	15
MENU OPERATION .........................................................	15
HOW TO USE THE [VOICE/C.S] SWITCH ....................	16
KEY DURATION SETTING ..............................................	17
RESETTING THE MICROPROCESSOR ........................	18
RECEIVING ........................................................	19
TUNING STEPS...............................................................	19
CHANGE THE TUNING STEP
OF THE [MAIN DIAL] KNOB .....................	19
CHANGE THE TUNING STEP
OF THE [DSP/SEL] KNOB ........................	19
ABOUT THE [UP]/[DWN] BUTTONS
OF THE OPTIONAL MH-31A8J AND MD-100A8X .....	20
CLARIFIER.......................................................................	20
DIGITAL VOICE ANNOUNCEMENT ...............................	21
DIAL LOCK .......................................................................	21
MY BANDS OPERATION ................................................	22
MY MODES OPERATION ...............................................	23
DIGITAL VOICE RECORDER .........................................	24
CONVENIENCE FEATURES .............................	25
RECEIVER OPERATION
(FRONT END BLOCK DIAGRAM) .........................................	25
ATT/IPO
(ADJUST THE RECEIVING SENSITIVITY) ..................................	26
NOISE BLANKER
(INTERFERENCE REJECTION “SIGNALS WITHIN 3 kHz”) ...........	26
AGC
(TOOL FOR COMFORTABLE AND EFFECTIVE RECEPTION) .........	27
CONTOUR
(INTERFERENCE REJECTION “SIGNALS WITHIN 3 kHz”) ...........	28
SHIFT
(INTERFERENCE REJECTION “SIGNALS WITHIN 3 kHz”) ...........	29
WIDTH
(INTERFERENCE REJECTION “SIGNALS WITHIN 3 kHz”) ...........	30
NOTCH
(INTERFERENCE REJECTION “SIGNALS WITHIN 3 kHz”) ...........	31
DNR
(INTERFERENCE REJECTION “SIGNALS WITHIN 3 kHz”) ...........	32
RF GAIN ...........................................................................	33

SSB/AM MODE TRANSMISSION .....................	34
TX METER SELECTION .................................................	35
TX POWER ADJUSTMENT ............................................	35
TRANSMITTER TIME-OUT TIMER (TOT) ......................	36
MICROPHONE GAIN LEVEL ADJUSTMENT ................	37
DSP MICROPHONE EQUALIZER ..................................	38
AUTOMATIC TX/RX SWITCHING
USING VOICE CONTROL (VOX) ...........................	39
MONITOR ........................................................................	40
SPLIT-FREQUENCY OPERATION .................................	41
QUICK SPLIT OPERATION ............................................	41
VOICE MEMORY (SSB/AM/FM MODES) ......................	42
CW MODE OPERATION ....................................	44
SETUP FOR STRAIGHT KEY
(AND STRAIGHT KEY EMULATION) OPERATION .....	44
USING THE BUILT-IN ELECTRONIC KEYER ................	45
CW SPOTTING (ZERO-BEATING) .................................	47
USING CW REVERSE ....................................................	47
CW DELAY TIME SETTING ............................................	48
CW SIDETONE VOLUME LEVEL SETTING ..................	48
CW PITCH ADJUSTMENT ..............................................	49
CW TRAINING FEATURE ...............................................	49
BEACON FEATURE ........................................................	50
FM MODE OPERATION.....................................	52
BASIC OPERATION ........................................................	52
REPEATER OPERATION ................................................	53
TONE SQUELCH/DCS OPERATION ..............................	54
TONE SEARCH SCANNING ...........................................	55
MEMORY OPERATION......................................	54
CONVENIENT MEMORY FUNCTIONS ..........................	56
MEMORY GROUPS.........................................................	57
REGULAR MEMORY OPERATION ................................	58
MEMORY STORAGE ................................................	58
MEMORY CHANNEL RECALL .................................	58
ERASING MEMORY CHANNEL DATA .....................	59
MEMORY TUNE OPERATION ..................................	59
LABELING MEMORIES ............................................	60
HOME CHANNEL MEMORIES .......................................	62
HOME CHANNEL RECALL .......................................	62
HOME CHANNEL FREQUENCY CHANGE .............	62
QMB (QUICK MEMORY BANK) ......................................	63
STORAGE .................................................................	63
RECALL .....................................................................	63
SCANNING OPERATION ...................................	64
VFO AND MEMORY SCANNING ....................................	64
PREPARATION .........................................................	64
VFO/MEMORY SCAN ...............................................	65
PROGRAMMABLE MEMORY SCANNING
(PMS) ........	66
OPERATION ON ALASKA
EMERGENCY FREQUENCY: 5167.5 kHz
(U.S. VERSION ONLY).......	67
MISCELLANEOUS SETTINGS..........................	68
DISPLAY SETTING..........................................................	68
BEEPER SETTING ..........................................................	69
BEEP VOLUME .........................................................	69
BEEP TONE ..............................................................	70
AUTOMATIC POWER-OFF (APO) ..................................	71

TABLE OF CONTENTS

RTTY (RADIO TELETYPE) OPERATION..........	72
SETTING UP FOR RTTY OPERATION ..........................	72
BASIC SETUP .................................................................	72
PACKET OPERATION .......................................	73
PACKET SETUP
(INCLUDING SUBCARRIER FREQUENCY) ...........	73
BASIC SETUP .................................................................	73
MISCELLANEOUS AFSK-BASED
DATA MODES.................	74
MENU MODE .....................................................	76
USING THE MENU ..........................................................	76
MENU MODE RESET ......................................................	76
CLONING ...........................................................	86

INSTALLATION OF
OPTIONAL ACCESSORIES ....................	87
AUTOMATIC ANTENNA TUNER
ATU-450 OPERATION ...............................	87
AUTOMATIC ANTENNA TUNER
FC-30 OPERATION ..................................	90
AUTOMATIC-MATCHING 200-MEMORY
ANTENNA TUNER FC-40 OPERATION .......................	92
ACTIVE-TUNING ANTENNA SYSTEM
(ATAS-100/-120/120A) OPERATION ....................	94
CARRYING HANDLE MHG-1 INSTALLATION ...............	96
MOUNTING BRACKET
MMB-90 INSTALLATION ............................	97
SPECIFICATIONS ..............................................	98

Congratulations on the purchase of your Yaesu amateur transceiver! Whether this is your first rig, or if Yaesu equipment is already the backbone of your station, rest assured that your transceiver will provide many hours of operating pleasure for years to come.

GENERAL FEATURE

Super Compact HF Transceiver with IF-DSP

ATU (automatic antenna tuner) can be installed in the radio (optional)

A perfect performance on HF radio with easy operation is realized only by the FT-450, very small HF transceiver.

HF + 50 MHz with 100 Watts output all mode operation

Small, compact and light-weight HF radio, 9 (W) x 3.3 (H) x 8.5 (D) in, 7.9 lb

9-segment LCD frequency display with large characters provides more natural indication

Black-Nega type LCD

Built-in IF DSP unit which realize the following functions

Modulation and Demodulation

CONTOUR

MANUAL NOTCH

DNR

WIDTH (CW narrow 500 Hz operation available without any optional filters)

Microphone equalizer built in

Speech Processor

DSP VOX operation

Two Voice memory channels included

Frequency read out function

TCXO built-in

500 memory channels

IF SHIFT

IPO

20 dB ATT built-in

Clarifier

Electronic keyer built-in

Microphone and phone jacks on the front panel

FSK-RTTY TX operation

Long wire antenna can be used by the optional FC-40

FT-450 OPERATION MANUAL

Page 1

FRONT PANEL SWITCHES AND KNOBS

ATT/IPO Switch	AGC Switch
This button selects the ATT or IPO feature. Available se-	This button selects the AGC characteristics for the receiver.
lections are:	Press and hold in this button for one second to disable the
ATT:OFF/IPO:OFF ATT:ON/IPO:OFF	AGC (for testing or weak-signal reception).

ATT:OFF/IPO:ON ATT:ON/IPO:ON

ATT:OFF/IPO:OFF

ATT: OFF, IPO: OFF

	Attenuator is OFF, and the RF preamplifier amplifies
	the incoming signal.	NB Switch
	ATT: ON, IPO: OFF
		This button turns the IF Noise Blanker
	The received signal is reduced by 20 dB, and the RF
		on and off. Press this button to re-
	preamplifier amplifies the incoming signal.
		duce short-duration pulse noise.
	ATT: OFF, IPO: ON
	Attenuator is OFF, and the received signal bypasses
	the RF preamplifier, yielding a direct feed to the first
	mixer.
	ATT: ON, IPO: ON
	The received signal is reduced by 20 dB, and the in-
	coming signal bypasses the RF preamplifier, yielding a
	direct feed to the first mixer.
	The selection will be indicated in the Block Diagram on
	the display.

	DSP Switch
	This button selects the DSP functions.
	Available selections are CONTOUR,
	NOTCH, DNR, and WIDTH.
	ON/OFF Switch
	Press and hold in this switch for one second
	to turn the transceiver on or off.
	PHONE Jack
	A 1/4-inch, 3-contact jack accepts ei-	PHONES
	ther monaural or stereo headphones
	with 2 or 3-contact plugs. When a plug
	is inserted, the loudspeaker is dis-
	abled.
	NOTE:	KEY
	When wearing headphones, we rec-
	ommend that you turn the AF GAIN	ON/OFF	DSP	ATT/IPO	NB	AGC	BAND
	levels down to their lowest settings
	before turning power on, to minimize
	the impact on your hearing caused by	MIC
	audio “pops” during switch-on.	-SHIFT+		DSP/SEL
					MODE	MODE	A=B
					KEYER	CLAR	FAST

KEY Jack

This 1/4-inch, 3-contact jack accepts a CW key or keyer paddles (for the built-in electronic keyer), or output from an external electronic keyer. Pinout is shown below. Key up is 5 volts, and key down current is 0.5 mA.

Page 2

FT-450 OPERATION MANUAL

FRONT PANEL SWITCHES AND KNOBS

VOICE/C.S Switch

Press this button to activate one of the 52 functions, which can be assigned via Menu Item “PNL-C.S.”

Press the [F] button followed by this button to announce the current operating frequency (with resolution to the displayed 100 Hz digit) and operating mode.

MW/V/M Switch

This button toggles frequency control between the VFO and the memory system.

Press the [F] button followed by this button to copy the current operating data from the VFO into the currently selected memory channel.

HOME/RCL Switch
Press this button to recall the Quick Memory Bank							VOX/STO Switch
memory for operation. Press this button again to							Press this button to copy the operating in-
return to the VFO or Memory mode.							formation (frequency, mode, bandwidth,
	[	]					and also repeater direction/shift frequency
Press the		F button followed by this button to recall
the “Home” (favorite frequency) channel. The home							and CTCSS functions on the FM mode) into
channel default settings are 29.30000 MHz for the							the Quick Memory Bank.
HF Band and 51.00000 MHz for the 6 m band.							Press the [F] button followed by this button
							to activate the VOX (voice-actuated trans-
							mitter switching) feature in the SSB, AM,
							and FM modes.
STEP/SPLIT Switch
Press this button to activate split fre-
quency operation between VFO-A,
used for reception and VFO-B, used
for transmission (or vice versa).
Press the [F] button followed by this							PMS/SCAN Switch
button to enable setting of the fre-							Press this button to initiate the
quency step with the [DSP/SEL] knob.							upward scanning of VFO fre-
When the selection is complete, press							quencies or memory chan-
this key again.							nels.
							Press the [F] button followed
							by this button to engage the
							Programmable Memory Scan,
							(PMS) which limits scanning
							within a particular frequency
							range.
					C.S	V/M
						VOX
					RCL	STO
					STEP	PMS
					SPLIT	SCAN
AGC	BAND		BAND	TUNE	F		METER/DIM Switch
							Press this button to change the meter
							function in the transmit mode as fol-
				SQL/RF GAIN		AF GAIN	lows.
MODE	A=B		A/B				PO ALC SWR PO
							PO: Indicates the average power
							output level.
CLAR	FAST		LOCK				ALC: Indicates the relative ALC volt-
							age.
							SWR: Indicates the Standing Wave
							Ratio (Forward/Reflected).
							Press the [F] button followed by this
							button to enable adjustment of the
							display dimmer level by the [DSP/
		TUNE Switch					SEL] knob. When the adjustment is
		Press this button momentarily to					complete, press this key again.
		toggle the ATU-450 Internal Automatic
		Antenna Tuner on/off.
		Press and hold in this button to begin
		the automatic Tuning.					F Switch
							Press this button to activate the alternate key
							functions of the six command buttons located
							on the upper right corner of the front panel.
							Press and hold this button for one second to
							engage the “Menu” mode.

FT-450 OPERATION MANUAL

Page 3

FRONT PANEL SWITCHES AND KNOBS

MIC Jack

This 8-pin jack accepts input from a supplied MH-67A8J Hand Microphone.

(viewed from front panel)

PHONES

KEY
ON/OFF	DSP	ATT/IPO	NB	AGC	BAND
MIC
-SHIFT+		DSP/SEL
			MODE	MODE	A=B
			KEYER	CLAR	FAST

SHIFT Knob

This knob shifts the IF DSP passband to reduce an interfering signal which is inside the IF passband.

DSP/SEL Knob

This knob is used to select functions depending on the situation.

Frequency Tuning

Memory Channel Selection

DSP Setting

Menu Mode Selection

MODE /MODE Switch

These buttons select the operating mode.

KEYER Switch

This button toggles the internal CW keyer on and off.

CLAR Switch

Pressing this button activates the Clarifier, to allow temporarily offsetting the receive frequency. When the Clarifier is active, you may offset the receive frequency by adjusting the [MAIN DIAL] knob.

Page 4

FT-450 OPERATION MANUAL

FRONT PANEL SWITCHES AND KNOBS

BAND /BAND Switch

These buttons select the operating band.

				C.S	V/M
					VOX
				RCL	STO
				STEP	PMS
				SPLIT	SCAN
AGC	BAND	BAND	TUNE	F

				AF GAIN
				This knob sets the receiver’s audio
		SQL/RF GAIN	AF GAIN	volume level. Typically, you will op-
MODE
	A=B	A/B		erate with this control set between
				the 9 o’clock and 10 o’clock posi-
CLAR	FAST	LOCK		tions.
				SQL/RF GAIN Knob
				In the factory default, this knob ad-
				justs the gain of the receiver’s RF
				and IF stages. Using Menu Item
				“SQL/RFG”, this knob may be
		A/B Switch		changed to function as a squelch
				control, which may be used to si-
		This button toggles the frequency		lence background noise when no sig-
		control between VFO-A and VFO-B.		nal is present.

LOCK Switch

This button toggles the locking of the [MAIN DIAL] knob and some switches, to prevent accidental frequency changes.

Advice: You may select the locking schemes via the Menu Mode. Term Explanation: The Menu Mode permits you to make small changes in the parameters of many of the functions of the FT-450. You can customize the operations to your personal preferences.

MAIN DIAL Knob

This knob adjusts the operating frequency in the SSB/CW/DATA modes. You may change the knobs function to also adjust frequency in AM/FM mode via the Menu Mode.

When the Clarifier is activated, this knob adjusts the receiver offset frequency.

FAST Switch

Pressing this button will increase or decrease the tuning rate of the [MAIN DIAL] knob by a factor of ten and also increase or decrease the tuning rate of the [DSP/SEL] knob by a factor of two.

A=B Switch

Press this button momentarily to transfer data from VFO-A frequency (or a recalled memory channel) to VFO-B, overwriting the previous contents in VFO-B. Use this key to set both VFO-A and VFO-B to the same frequency and mode.

FT-450 OPERATION MANUAL

Page 5

DISPLAY INDICATIONS

Display

PHONES								C.S	V/M
									VOX
								RCL	STO
KEY								STEP	PMS
								SPLIT	SCAN
ON/OFF	DSP	ATT/IPO	NB	AGC	BAND	BAND	TUNE	F

MIC

-SHIFT+	DSP/SEL			SQL/RF GAIN	AF GAIN
	MODE	MODE	A=B	A/B
	KEYER	CLAR	FAST	LOCK

Meter

While receiving, the received signal strength is displayed.

While transmitting, the meter displays PO, ALC, or SWR (determined by the [METER/DIM] button).

DSP Graphic Display

:The peak position of the CONTOUR Filter is depicted graphically here when the CONTOUR Filter is activated.

:The null position of the IF Notch Filter is depicted graphically here when the IF Notch Filter is activated.

:Indicates the Noise Reduction level of the Digital Noise Reducer.

:Indicates the bandwidth of the DSP IF filter.

:Indicates the peak position of the DSP IF filter.

Page 6

FT-450 OPERATION MANUAL

DISPLAY INDICATIONS

Block Diagram Display

:Indicates the antenna status. When the antenna system became abnormality, this indicator will blink.

:Indicates the RF attenuator status (“ON” or “OFF”) selected for operation by the [ATT/IPO] button.

:Indicates that the front-end RF pre-amplifier is removed from the receiver circuit. The incoming signal is fed direct to the first mixer.

:Indicates the 10 kHz Roofing Filter status. This is always turned on.

:Indicates the Noise Blanker status (“ON” or “OFF”).

:Indicates the AGC decay time.

Frequency Display

The operating frequency is displayed.

:This indicator appears during transmission.

:This indicator appears whenever the receiver squelch is open.

:This indicator appears when the optional ATU-450 Internal Automatic Antenna Tuner is activated.

: Displays the currently selected operating mode.

: Displays the current CTCSS operation while in FM mode.

: Displays the Repeater Shift Direction while in FM mode.

:This indicator appears whenever the VOX (automatic voice-actuated transmitter switching) circuit is activated.

:This indicator appears while the voice recorder is recording the receiver audio. This indicator blinks while the voice recorder is playing back the recorded audio.

:This indicator appears whenever the internal CW keyer is activated.

:This indicator appears whenever the CW break-in operation is activated.

:This indicator appears when the [MAIN DIAL] knob’s tuning rate is set to fast.

:This indicator appears when the [MAIN DIAL] knob is locked.

:This indicator appears whenever the Menu Mode is engaged.

:This indicator appears whenever the Clarifier function is activated.

:This indicator appears whenever Split-frequency operation is activated.

:This indicator appears when the alternate key functions of the six command buttons located on the upper right corner of the front panel is activated.

FT-450 OPERATION MANUAL

Page 7

REAR PANEL JACKS

DC IN Jack

This is the DC power supply connection for the transceiver. Use the supplied DC cable to connect directly to the car battery or to a DC power supply, which must be capable of supplying at least 22 A @13.8 VDC.

- +

(viewed from rear panel)

ANT

INPUT DC 13.8V

22A

ANT Jack

Connect your antenna here, using a type-M (PL-259) coaxial connector and 50 Ohm coaxial feedline.

Warning!: High Power RF voltage is present at the TX RF section of the transceiver while transmitting. Absolutely! Do not touch the TX RF section while transmitting.

COOLING FAN

Turns at low speed in receive mode.

Turns at high speed when the temperature begins to rise or in transmit mode.

		EXT	GND
		SPKR
DATA	TUNER LINEAR	CAT

GND Terminal

For safety and optimum performance, use this terminal to connect the transceiver to a good earth ground. Use a large diameter, short braided cable for making ground connections. Refer to page 12 for other notes about proper grounding.

EXT SPKR Jack

This 3.5-mm, 2-pin jack provides variable audio output for an external speaker. The audio output impedance at this jack is 4 - 16 Ohms and the level varies according to the setting of the front panel’s [AF GAIN] knob. Inserting a plug into this jack disables the internal loudspeaker.

CAT Jack

This 9-pin serial DB-9 jack allows external computer control of the FT450. Connect a (straight) serial cable here and to the RS-232C COM port on your personal computer (no external interface is required).

N/A	CTS	RTS
		Connect to
GND		Connect to
Connect to		SERIAL OUT
	SERIAL IN

(viewed from rear panel)

LINEAR Jack

This 10-pin output jack provides band selection data, which may be used for control of the optional VL-1000 SolidState Linear Amplifier.

TUNER Jack

This 8-pin jack is used for Connection to the FC-30 or FC-40 External Automatic Antenna Tuner.

TX GND OUT

+13.8V OUT	GND
BAND DATA-A (LSB)	BAND DATA-D (MSB)
TX INH IN	TXREG IN
BAND DATA-B	BAND DATA-C
EXT ALC IN	(viewed from rear panel)

+13.8V OUT TX GND OUT

RXD

GND

TXD

TUNER SENSE

TX INH IN

RESET OUT (viewed from rear panel)

DATA Jack

This 6-pin input/output jack provides receiver audio and squelch signals, and accepts transmit (AFSK) audio and PTT control, from an external packet TNC.

DATA IN	GND
DATA PTT	FSK IN
DATA OUT	SQL OUT

(viewed from rear panel)

Page 8

FT-450 OPERATION MANUAL

SUPPLIED MH-67A8J MICROPHONE

PTT Switch

Press this switch to transmit, and release it to receive after your transmission is completed.

MIC

The microphone is located here. Speak into the microphone in a normal voice level. The microphone should be positioned within 2 inches (5 cm) from the mouth for optimum performance.

FT-450 OPERATION MANUAL

Page 9

ACCESSORIES & OPTIONS

SUPPLIED ACCESSORIES

Hand Microphone (MH-67A8J)	1 pc	P/N: M3090122A
DC Power Cord with Fuse	1 pc	P/N: T9023725
Fuse	1 pc	P/N: Q0000074
Operation Manual	1 pc
Warranty Card	1 pc

AVAILABLE OPTIONS
Internal Automatic Antenna Tuner	ATU-450
External Automatic Antenna Tuner	FC-30
External Automatic Antenna Tuner (for Wire Antenna)	FC-40
Active-Tuning Antenna System	ATAS-25
Active-Tuning Antenna System	ATAS-120A
Solid-State Linear Amplifier/AC Power Supply	VL-1000 / VP-1000
Band Data Cable (for VL-1000)	CT-118
Desktop Microphone	MD-100
DTMF Hand Microphone	MH-36E8J
Hand Microphone	MH-31A8J
Lightweight Stereo Headphone	YH-77STA
Mobile Mounting Bracket	MMB-90
Carrying Handle	MHG-1

Page 10

FT-450 OPERATION MANUAL

INSTALLATION

CONNECTION OF ANTENNA AND POWER SUPPLY

The FT-450 is designed for use with any antenna system providing a 50 Ohm resistive impedance at the desired operating frequency. Every effort should be made to ensure the impedance of the antenna system is as close as possible to the specified 50-Ohm value. Note that the “G5RV” type antenna does not provide 50-Ohm impedance on all HF Amateur bands, and an external wide-range antenna coupler must be used with this antenna type.

Any antenna to be used with the FT-450 must, ultimately, be fed with 50 Ohm coaxial cable. Therefore, when using a “balanced” antenna such as a dipole, remember that a balun or other matching/balancing device must be used to ensure proper antenna performance.

CAUTION

Permanent damage can result if improper supply voltage, or reverse-polarity voltage, is applied to the FT-450. The Limited Warranty on this transceiver does not cover damage caused by application of AC voltage, reversed polarity DC, or DC voltage outside the specified range of 13.8V ±10%.

When replacing fuses, be certain to use a fuse of the proper rating. The FT-450 requires a 25A fastblow fuse.

AC Power Supply

0	5	10	15	20	0	5	20	30	40
		V					A

ANTENNA

FT-450

		ANT
	INPUT
	DC 13.8V
	22A
POWER
ON
		EXT	GND
OFF		SPKR
DATA	TUNER LINEAR	CAT

RED BLACK

FUSE: 25A

ABOUT COAXIAL CABLE

Use high-quality 50-Ohm coaxial cable for the lead-in to your FT-450 transceiver. All efforts at providing an efficient antenna system will be wasted if poor quality, lossy coaxial cable is used. This transceiver utilizes standard “M” (“PL-259”) type connector.

1/16''

Adapter

3/4''

3/4''

1 1/8''

1/8''
3/8''	5/8''

TYPICAL PL-259 INSTALLATION

FT-450 OPERATION MANUAL

Page 11

INSTALLATION

GROUNDING

The FT-450 transceiver, like any other HF communications apparatus, requires an effective ground system for maximum electrical safety and best communications effectiveness. A good ground system can contribute to station efficiency in a number of ways:

It can minimize the possibility of electrical shock to the operator.

It can minimize RF currents flowing on the shield of the coaxial cable and the chassis of the transceiver.

Such currents may lead to radiation, which can cause interference to home entertainment devices or laboratory test equipment.

It can minimize the possibility of erratic transceiver/accessory operation caused by RF feedback and/or improper current flow through logic devices.

An effective earth ground system may take several forms. For a more complete discussion, see an appropriate

RF engineering text. The information below is intended only as a guideline.

Typically, the ground connection consists of one or more copper-clad steel rods, driven into the ground. If multiple ground rods are used, they should be positioned in a “V” configuration, and bonded together at the apex of the “V” which is nearest the station location. Use a heavy, braided cable (such as the discarded shield from type RG-213 coaxial cable) and strong cable clamps to secure the braided cable(s) to the ground rods. Be sure to weatherproof the connections to ensure many years of reliable service. Use the same type of heavy, braided cable for the connections to the station ground bus (described below).

Inside of the station, a common ground bus consisting of a copper pipe of at least 25 mm (1”) diameter should be used. An alternative station ground bus may consist of a wide copper plate (single-sided circuit board material is ideal) secured to the bottom of the operating desk. Grounding connections from individual devices such as transceivers, power supplies, and data communications devices (TNCs, etc.) should be made directly to the ground bus using a heavy, braided cable.

Do not make ground connections from one electrical device to another, and thence to the ground bus. This socalled “Daisy-Chain” grounding technique may nullify any attempt at effective radio frequency grounding. See the drawing below for examples of proper grounding techniques.

Inspect the ground system - inside the station as well as outside - on a regular basis so as to ensure maximum performance and safety.

Besides following the above guidelines carefully, note that household or industrial gas lines must never be used in an attempt to establish an electrical ground. Cold water pipes may, in some instances, help in the grounding effort, but gas lines represent a significant explosion hazard, and must never be used.

Transceiver	Linear	TNC
	Amplifier

PROPER GROUND CONNECTION

Transceiver	Linear	TNC
	Amplifier

"Daisy Chain"

IMPROPER GROUND CONNECTION

Page 12

FT-450 OPERATION MANUAL

INSTALLATION

VL-1000 LINEAR AMPLIFIER INTERCONNECTION

Be sure that both the FT-450 and VL-1000 are turned off, then follow the installation recommendations contained in the illustration.

Note:

Please refer to the VL-1000 Operating Manual for details regarding amplifier operation.

Please do not attempt to connect or disconnect coaxial cables when your hands are wet.

DC 13.8 V

INPUT	ANT
	ANT
INPUT
DC 13.8V
22A

		EXT	GND
		SPKR
DATA	TUNER LINEAR	CAT

ANTENNA CABLE (Not Supplied)
AntennaVertical	AntennaDipole	AntennaBeam	To link the FT-450 and VL-
			1000 Power switches, set
			the VL-1000 REMOTE
HF	HF	HF	switch to the “ON” position.
ANT 1	ANT 2		ANT 3	INPUT 1
ANT 1				INPUT 1
			REMOTE
				PTT 1
			ON
			OFF
ANT 2			BAND DATA 1	PTT 2
				INPUT 2
				ALC 1
ANT 3
				CONTROL
				ALC 2
ANT 4				DC48V IN
				GND
			BAND DATA 2

LINEAR

GND

BAND-DATA2

ALC2

GND

DC48VIN

CONTROL

CT-118 CONNECTION CABLE (Option)

VP-1000

VP-1000

INTERFACING TO OTHER LINEAR AMPLIFIER

The T/R control line is a transistor “open collector” circuit, capable of handling positive amplifier relay coil voltages of up to +50V DC and current of up to 400 mA. If you plan on using multiple linear amplifiers for different bands, you must provide external band-switching of the “Lin Tx” relay control line from the “TX GND OUT” line at the LINEAR jack.

Important Note!

Do not exceed the maximum voltage or current ratings for the “TX GND OUT” line at the LINEAR jack. This line is not compatible with negative DC voltages, nor AC voltages of any magnitude.

Most amplifier control relay systems require only low DC voltage/current switching capability (typically, +12V DC at 25 ~ 75 mA), and the switching transistor in the FT-450 will easily accommodate such amplifiers.

DC 13.8 V

HF Antenna

INPUT

ANT 1

ANT 1

INPUT 1

ANT

INPUT DC 13.8V

22A

			RF OUT	RF IN
				GND	FUSE	AC	E ALC E RY
		EXT	GND
		SPKR
DATA	TUNER LINEAR	CAT

GND

GND

GND

EXT ALC IN

TX GND OUT

FT-450 OPERATION MANUAL

Page 13

EASY OPERATION

[POWER(ON/OFF)] switch					[BAND ]/[BAND ] button
PHONES									V/M
									VOX
									STO
KEY								STEP	PMS
								SPLIT	SCAN
ON/OFF	DSP	ATT/IPO	NB	AGC	BAND	BAND	TUNE	F
MIC
-SHIFT+		DSP/SEL					SQL/RF GAIN		AF GAIN
			MODE	MODE	A=B	A/B
			KEYER	CLAR	FAST	LOCK

[MAIN DIAL] knob				[AF GAIN] knob
[MODE ]/[MODE ] button
		[SQL/RF GAIN] knob

RECEIVING

TRANSMIT

1.Connect your antenna to the ANT jack on the rear panel.

2.Connect the after-market DC power supply (or car battery) using the supplied DC power cable, and set the POWER switch of the DC power supply to on.

3.Press and hold in the [POWER(ON/OFF)] switch for one second to turn the transceiver on.

4.Rotate the [SQL/RF GAIN] knob to the fully clockwise position.

5.Rotate the [AF GAIN] knob to set a comfortable audio level on incoming signals or noise. Clockwise rotation of the [AF GAIN] knob increases the volume level.

6.Press the [BAND ]/[BAND ] button to select the amateur band which you wish to begin operating.

7.Press the [MODE ]/[MODE ] button to select the desired operating mode.

8.Rotate the [MAIN DIAL] knob to set the desired frequency.

1.Connect the supplied MH-67A8J to the MIC jack on the front panel.

2.To transmit, press the microphone’s PTT (Push To Talk) switch, speak into the microphone in a normal voice level.

3.Release the PTT switch to return to the receive mode.

NOTICE

Regarding of the [DSP/SEL] knob

The [DSP/SEL] knob is used for operating various functions depending on the situation.

If you can not change the frequency/memory channel by tuning the [DSP/SEL] knob, the [DSP/SEL] knob is selected to operate of one of the DSP functions.

In this case, press the [DSP] button several times until the “>” icon disappears from the

DSP Graphic Display.

Page 14

FT-450 OPERATION MANUAL

EASY OPERATION

HOW TO USE THE [DSP/SEL] KNOB

When a DSP function is not selected and no “>” icon is shown in the LCD Graphic Display, then turning the [DSP/SEL] knob controls the frequency in VFO mode, or selects the memory channel in memory mode, or selects the menu item in memory mode. In the VFO Mode, briefly depressing the [DSP/SEL] knob will permit frequency adjustment in 100 kHz steps (Default setting). (The 100 kHz operation may

be changed with the“SELDIAL” menu function.)	[DSP/SEL] knob

When a DSP function is selected, the “>” icon will appear next to the function in the LCD Graphic Display. Then pressing the [DSP/SEL] knob will switch the DSP function on or off. When the DSP function is on, turning the [DSP/SEL] knob will change the function parameters.

ADVICE:

You may change the function of the [DSP/SEL] knob via menu item “SELDIAL”.

MENU OPERATION

The Menu System allows you to customize a wide variety of transceiver performance aspects and operating characteristics. After you have initially customized the various Menu procedures, you will find that you will not have to resort to them frequently during everyday operation.

1.Press and hold the [F] button for one second to enter the Menu Mode. The “” icon will appear on the display.

2.Rotate the [DSP/SEL] knob to select the Menu Item to be adjusted.

3.Press the [DSP/SEL] knob to enable adjustment of the selected Menu Item. The “” icon will blink.

4.Rotate the [DSP/SEL] knob to adjust or select the parameter to be changed.

5.Press the [DSP/SEL] knob to save the selection. The icon appears continuously.

6.Press and hold the [F] button for one second to return to normal operation.

[DSP/SEL] knob

[F] button

Menu Item or Menu Setting

FT-450 OPERATION MANUAL

Page 15

EASY OPERATION

HOW TO USE THE [VOICE/C.S] SWITCH

You may set the [VOICE/C.S] button function to one of 52 functions via Menu Item “PNL-C.S”.

To assign a function to the [VOICE/C.S] button:

1.Press and hold the [F] button for one second to enter the Menu Mode. The “” icon will appear on the display.

2.Rotate the [DSP/SEL] knob to select Menu Item “PNL-C.S”.

3.Press the [DSP/SEL] knob to enable adjustment of this Menu Item. The “” icon will be blinking.

4.Rotate the [DSP/SEL] knob to select the desired function.

5.Press the [DSP/SEL] knob. The “” icon returns to appear continuously.

6.Press and hold the [F] button for one second to return to normal operation.

[VOICE/C.S] button

[DSP/SEL] knob

[F] button

Item	Function
MONI	Activates the Monitor function.
N/A	No Function.
P/B	Activates the Digital Voice Recorder.
PLAY1	Send the CW message, which is memorized in BEACON TEXT 1.
PLAY2	Send the CW message, which is memorized in BEACON TEXT 2.
PLAY3	Send the CW message, which is memorized in BEACON TEXT 3.
QSPL	Activates Quick Split Operation
SPOT	Generates a CW Spot Tone while pressing the [VOICE/C.S] button when using CW mode.
SQLOFF	Opens the noise squelch while pressing the [VOICE/C.S] button.
SWR	Transmits a 10 watts carrier (CW mode) to measure the SWR ratio while pressing the [VOICE/C.S] button.
TXW	Monitor the transmit frequency while pressing the [VOICE/C.S] button when Split Frequency operation is engaged.
VCC	Display the DC supply voltage while pressing the [VOICE/C.S] button.
VOICE2	Announces the current S-meter reading, operating frequency (with resolution to the displayed 100 Hz digit), and
	operating mode.
VM1MONI	Play back the voice message, which is memorized in Voice Memory 1.
VM1REC	Store the voice message into Voice Memory 1.
VM1TX	Send the voice message, which is memorized in Voice Memory 1.
VM2MONI	Play back the voice message, which is memorized in Voice Memory 2.
VM2REC	Store the voice message into Voice Memory 2.
VM2TX	Send the voice message, which is memorized in Voice Memory 2.
DOWN	Decreases the VFO frequency by one step or moves the memory channel to the next-lowest channel while pressing
	the [VOICE/C.S] button.
FAST	Set to the same function as the front panel’s [FAST] button.
UP	Increases the VFO frequency by one step or moves the memory channel to the next-highest channel while pressing
	the [VOICE/C.S] button
DSP	Set to the same function as the front panel’s [DSP] button.
ATT/IPO	Set to the same function as the front panel’s [ATT/IPO] button.
NB	Set to the same function as the front panel’s [NB] button.
AGC	Set to the same function as the front panel’s [AGC] button.
MODEDN	Set to the same function as the front panel’s [MODE ] button.
MODEUP	Set to the same function as the front panel’s [MODE ] button.
DSP/SEL	Set to the same function as the front panel’s [DSP/SEL] button.
KEYER	Set to the same function as the front panel’s [KEYER] button.
CLAR	Set to the same function as the front panel’s [CLAR] button.
BANDDN	Set to the same function as the front panel’s [BAND ] button.
BANDUP	Set to the same function as the front panel’s [BAND ] button.
A=B	Set to the same function as the front panel’s [A=B] button.
A/B	Set to the same function as the front panel’s [A/B] button.
LOCK	Set to the same function as the front panel’s [LOCK] button.
TUNE	Set to the same function as the front panel’s [TUNE] button.
VOICE	Announce the current operating frequency (with resolution to the displayed 100 Hz digit) and operating mode.
MW	Copies the current operating data from the VFO into the currently selected memory channel.
V/M	Toggles frequency control between VFO and memory system.
HOME	Recall the “Home” (favorite frequency) channel.
RCL	Recall the QMB (Quick Memory Bank) memory.
VOX	Activate the VOX (automatic voice-actuated transmitter switching) feature.
STO	Copies operating data into QMB (Quick Memory Bank) Memory.
STEP	Enables the setting of the frequency step of the [DSP/SEL] knob by the [DSP/SEL] knob.
SPLIT	Activates split frequency operation between VFO-A and VFO-B.
PMS	Engages Programmable Memory Scan (PMS).
SCAN	Initiates the upward scanning of VFO frequencies or memory channels).
MENU	Engage the “Menu” mode.
DIMMER	Enables adjustment of the display dimmer level by the [DSP/SEL] knob.
MTR	Change the meter function in the transmit mode.
USER	This parameter is for future expansion of the transceiver’s capabilities. Do not select this parameter.

Page 16

FT-450 OPERATION MANUAL

EASY OPERATION

KEY DURATION SETTING

The duration that buttons are held determines the function they activate. Factory default is one second. Pressing a button for less than one second activates one function. Pressing and holding the button in for longer than one second activates another function.

The default one second release time can be changed to a shorter or longer duration, if desired.

To do this:

1.Press and hold the [F] button for one second to enter the Menu Mode. The “” icon will appear on the display.

2.Rotate the [DSP/SEL] knob to select the Menu

Item “EXT MNU”.

3.Press the [DSP/SEL] knob to enable adjustment of this menu item. The “” icon will be blinking.

4.Rotate the [DSP/SEL] knob to select “ON” to expand the menu item.

5.Press the [DSP/SEL] knob. The “” icon returns to appear continuously.

6.Press and hold the [F] button for one second to save the new setting and return to normal operation.

7.Press and hold the [F] button for one second to enter the Menu mode again. The “” icon will appear on the display.

8.Rotate the [DSP/SEL] knob to select menu item “KEYHOLD”.

9.Press the [DSP/SEL] knob to enable adjustment of this menu item. The “” icon will be blinking.

10.Rotate the [DSP/SEL] knob to set the desired du-

ration time. Available selections are 0.5/1.0/1.5/ 2.0 sec. (default value: 1.0 sec).

You may Press the [HOME/RCL] button to reset the duration time to the factory default.

11.Press the [DSP/SEL] knob. The “” icon returns to appear continuously.

12.Press and hold the [F] button for one second to save the new setting and return to normal operation.

[HOME/RCL] button

[DSP/SEL] knob

[F] button

FT-450 OPERATION MANUAL

Page 17

EASY OPERATION

RESETTING THE MICROPROCESSOR

The FT-450 has three reset methods.

VFO/MEMORY RESET

Use this procedure to reset (clear out) the Memory channels (Except the QMB channel) previously stored and VFO data, without affecting any configuration changes you may have made to the Menu settings.

1.Press and hold in the [POWER(ON/OFF)] switch for one second to turn the transceiver off.

2.Press and hold the [MW/(V/M)] button. While holding it in, press and hold in the [POWER(ON/ OFF)] switch for one second to turn the transceiver on. Once the transceiver comes on, you may release the [MW/(V/M)] button.

MENU MODE RESET

Use this procedure to restore the Menu settings to their factory defaults, without affecting the memories you have programmed.

1.Press and hold in the [POWER(ON/OFF)] switch for one second to turn the transceiver off.

2.Press and hold the [F] button. While holding it in, press and hold in the [POWER(ON/OFF)] switch for one second to turn the transceiver on. Once the transceiver comes on, you may release the [F] button.

FULL RESET

Use this procedure to restore all Menu and Memory settings to their original factory defaults. All Memories will be cleared by this procedure.

1.Press and hold in the [POWER(ON/OFF)] switch for one second to turn the transceiver off.

2.Press and hold the [HOME/RCL] button. While holding it in, press and hold in the [POWER(ON/

OFF)] switch for one second to turn the transceiver on. Once the transceiver comes on, you may release the [HOME/RCL] button.

[ON/OFF] switch

[MW/(V/M)] button

[ON/OFF] switch

[F] button

[ON/OFF] switch

[HOME\RCL] button

Page 18

FT-450 OPERATION MANUAL

RECEIVING

TUNING STEPS

The tuning step of the [MAIN DIAL] knob and the

[DSP/SEL] knob is different depending on the operating mode.

OPERATING			KNOB
MODE		[MAIN DIAL]	[DSP/SEL] 1
LSB/USB		1/10/20 Hz	1.0/2.5/5.0 kHz
CW		1/10/20 Hz	1.0/2.5/5.0 kHz
AM		100/200 Hz 2	2.5/5.0/9.0/10/12.5/25 kHz
FM		100/200 Hz 2	5.0/6.25/10/12.5/15/20/25/50 kHz
DATA		10/20 Hz	1.0/2.5/5.0 kHz

1: When you press the [DSP/SEL] knob, the tuning step of the [DSP/SEL] knob changes to 100 kHz in all modes.

2: In the factory default, the [MAIN DIAL] knob does not tune the AM and FM modes. However, you may activate the [MAIN DIAL] knob on the AM and FM mode via Menu Item “A&FDIAL”.

Pressing the [FAST] button will increase or decrease the tuning rate of the [MAIN DIAL] knob by a factor of ten and also increase or decrease the tuning rate of the [DSP/SEL] knob by a factor of two.

[FAST] button

[DSP/SEL] knob [MAIN DIAL] knob

NOTICE

Regarding of the [DSP/SEL] knob

The [DSP/SEL] knob is used for operating various functions depending on the situation.

If you can not change the frequency/memory channel by tuning the [DSP/SEL] knob, the [DSP/SEL] knob is selected to operate of one of the DSP functions.

In this case, press the [DSP] button several times until the “>” icon disappears from the DSP Graphic Display.

CHANGE THE TUNING STEP OF THE [MAIN DIAL] KNOB

1.Set the operating mode by pressing the

[MODE ]/[MODE ] button.

2.Press and hold the [F] button for one second to

enter the Menu mode. The	” icon will ap-
pear on the display.

3.Rotate the [DSP/SEL] knob to select the menu item “DIALSTP”.

4.Press the [DSP/SEL] knob to enable adjustment

of this menu item. The	” icon will be blink-
ing.

5.Rotate the [DSP/SEL] knob to select the desired tuning step described above.

(You may Press the [HOME/RCL] button to reset the tuning step to the factory default.)

6. Press the [DSP/SEL] knob. The ” icon is displayed continuously.

7.Press and hold the [F] button for one second to save the new setting and return to normal operation.

[DSP/SEL] button

[HOME/RCL] button

[MODE ]/[MODE ] button

[F] button

CHANGE THE TUNING STEP OF THE [DSP/SEL] KNOB

1.Set the operating mode by pressing the [MODE ]/[MODE ] button.

2.Press the [F] button momentarily.

3.Press the [STEP/SPLIT] button.

4.Rotate the [DSP/SEL] knob to select the desired tuning step described above.

5.Press the [DSP/SEL] knob to save the new setting and return to normal operation.

[DSP/SEL] knob

[STEP/SPLIT] button

[MODE ]/[MODE ] button

[F] button

FT-450 OPERATION MANUAL

Page 19

RECEIVING

ABOUT THE [UP]/[DWN] BUTTONS OF THE OPTIONAL MH-31A8J AND MD-100A8X

The microphone’s [UP]/[DWN] buttons utilize the tuning steps of the [MAIN DIAL] knob on the SSB/

CW/DATA mode, and utilize the tuning steps of the [DSP/SEL] knob on the AM/FM mode.

In the factory default, the microphone’s [FST] button does not activate. However, you may activate the microphone’s [FST] button via the Menu Item

“P M-FST”.

NOTE:

The microphone holder is affixed to the place where is contacted to the ground (for example, the chassis of your car), and the microphone is hooked on the microphone holder, the [FST] function becomes “ON”.

We recommend that not to contact the microphone holder to the ground, nor set menu item

“P M-FST” to “N/A”.

[FST] Button

[DWN] Button	[UP] Button
DWN FST	UP

DYNAMIC MICROPHONE

MH-31

CLARIFIER

You may change the receiving frequency only without changing the transmit frequency.

1.Press the [CLAR] button to activate the clarifier. The “” icon will appear on the display.

2. Rotate the [MAIN DIAL] knob to tune the desired		Clarifier Offset
receive frequency. (Offset of up to ±9.99 kHz may
be set using the clarifier.)
The offset frequency will appear
at the bottom right corner of the
display.
3. Press the [CLAR] button again to disable the clari-
fier. The “	” icon will disappear from the dis-
play.
		[MAIN DIAL] knob
		[CLAR] button

NOTE:

Even when the clarifier is disabled, the variance of the clarifier remains (both TX and RX frequencies).

Press and hold in the [CLAR] button for one second to clear the clarifier offset, meaning the receiving frequency is equal to the transmit frequency.

When the [MAIN DIAL] knob is rotated to change the frequency after disabling the clarifier, the clarifier offset becomes “zero”, meaning the receiving frequency is equal to the transmit frequency.

When the receiving frequency is higher than transmit frequency, “+” will be appended to the offset frequency.

When the receiving frequency is lower than transmit frequency, “–” will be appended to the offset frequency.

You may assign the CLAR function to the [DSP/ SEL] knob via the Menu Item “CLAR”.

Page 20

FT-450 OPERATION MANUAL

RECEIVING

DIGITAL VOICE ANNOUNCEMENT

Press the [F] button followed by the [VOICE/C.S] button to announce the current operating frequency (with resolution to the displayed 100 Hz digit) and operating mode.

ADVICE:

If you assign the “VOICE2” function to the [VOICE/ C.S] button via the menu item “PNL-C.S”, you may confirm the current operating frequency (with resolution to the displayed 100 Hz digit), operating mode, and S-meter reading through the voice message announcement system by pressing the [VOICE/C.S] button. See page 16 for details of the [VOICE/C.S] button assignment.

[VOICE/C.S] button

[F] button

DIAL LOCK

Pressing the [LOCK] button toggles the locking of the [MAIN DIAL] knob and some switches, to prevent accidental frequency changes.

ADVICE:

You may select the locking schemes via the menu item “LOCKMOD”. See page 81 for details.

[LOCK] button

FT-450 OPERATION MANUAL

Page 21

RECEIVING

MY BANDS OPERATION

The “My Bands” feature allows you to select several Amateur bands, and make only those bands available for selection via the [BAND ]/[BAND ] buttons.

This feature can be very useful in a contest, where the 10/18/24 MHz band are not used, or if you do not have antennas for some bands.

MY BANDS SETUP

1. Press and hold the [F] button for one second to enter the Menu mode. The ” icon will appear on the display.

2.Rotate the [DSP/SEL] knob to select the menu item “EXT MNU”.

3.Press the [DSP/SEL] knob to enable adjustment of

this menu item. The

” icon will be blinking.

4.Rotate the [DSP/SEL] knob to select “ON” to expand the menu items.

5.Press the [DSP/SEL] knob to save the new set-

ting. The	” icon returns to appear con-
tinuously.

6.Press and hold the [F] button for one second to return to normal operation.

7.Press and hold the [F] button for one second to

enter the Menu mode again. The	” icon
will appear on the display.

8.Rotate the [DSP/SEL] knob to select the menu item “MY BAND”.

9.Press the [DSP/SEL] knob to enable adjustment of

this menu item. The

” icon will be blinking.

10.Press the [BAND ]/[BAND ] buttons to choose a band you wish to skip (omit) from the band selection loop.

11.Rotate the [DSP/SEL] knob to select “OFF”, and then press the [DSP/SEL] knob.

NOTE

The “OFF” selection sets the selected band to be skipped, while the “ON” selection sets the selected

band to be included in the band-selection list.

12. Press the [DSP/SEL] knob. The ” icon returns to appear continuously.

13.Repeat steps 10 through 12 to select/deselect as many bands as you like.

NOTE

The GEN (General Band) and the current band cannot be skipped.

14.Press and hold the [F] button for one second to save the new setting and return to normal operation.

[BAND ]/[BAND ] button

	[DSP/SEL] knob			[F] button
1.8MHz
3.5MHz
7MHz
10MHz	3.5MHz	3.5MHz	7MHz	14MHz
14MHz	7MHz	28MHz	21MHz	GEN
18MHz	14MHz
		BAND		BAND
21MHz	21MHz
24MHz	28MHz
28MHz	GEN
50MHz
GEN

MY BANDS OPERATION

Press the [BAND ]/[BAND ] buttons to choose the

Amateur band on which you wish to operate. Only those Amateur bands that have not been skipped will appear as you scroll through the bands.

[BAND ]/[BAND ] button

Page 22

FT-450 OPERATION MANUAL

RECEIVING

MY MODES OPERATION

The “My Modes” feature allows you to select the operating modes you wish to have available for selection via the [MODE ]/[MODE ] buttons. Only the desired modes will be displayed in the loop.

This feature can be very useful in an HF operation, where the AM/FM/DATA modes are not used.

MY MODES SETUP

1. Press and hold the [F] button for one second to enter the Menu mode. The ” icon will appear on the display.

2.Rotate the [DSP/SEL] knob to select the menu item “EXT MNU”.

3.Press the [DSP/SEL] knob to enable adjustment of

this menu item. The

” icon will be blinking.

4.Rotate the [DSP/SEL] knob to select “ON” to expand the menu items.

5. Press the [DSP/SEL] knob. The	” icon re-
turns to appear continuously.

6.Press and hold the [F] button for one second to save the new setting and return to normal operation.

7.Press and hold the [F] button for one second to

enter the Menu mode again. The	” icon
will appear on the display.

8.Rotate the [DSP/SEL] knob to select the menu item “MY MODE”.

9.Press the [DSP/SEL] knob to enable adjustment of

this menu item. The

” icon will be blinking.

10.Press the [MODE ]/[MODE ] buttons to choose a mode you wish to skip (omit) from the mode selection loop.

11.Rotate the [DSP/SEL] knob to select “OFF”, and then press the [DSP/SEL] knob.

NOTE

The “OFF” selection sets the selected mode to be

skipped, while the “ON” selection sets the selected mode to be included in the mode-selection list.

12. Press the [DSP/SEL] knob. The ” icon returns to appear continuously.

13.Repeat steps 10 through 12 to select/deselect as many modes as you like.

NOTE

The mode currently in use cannot be turned off.

14.Press and hold the [F] button for one second to save the new setting and return to normal operation.

[MODE ]/[MODE ] button

[DSP/SEL] knob				[F] button
LSB
USB
LSB		LSB	USB	FM
CW
USB
AM
FM			MODE MODE
FM

KEYER CLAR

DATA

MY MODES OPERATION

Press the [MODE ]/[MODE ] buttons to choose the operating mode on which you wish to operate. Only those operating modes that have not been skipped will appear as you scroll through the modes.

[MODE ]/[MODE ] button

FT-450 OPERATION MANUAL

Page 23

RECEIVING

DIGITAL VOICE RECORDER

PREPARATIONS

1. Press and hold the [F] button for one second to enter the Menu mode. The ” icon will appear on the display.

2.Rotate the [DSP/SEL] knob to select the menu item “PNL-C.S”.

3.Press the [DSP/SEL] knob to enable adjustment of

	this menu item. The	” icon will be blinking.
4.	Rotate the [DSP/SEL] knob to select “P/B” to as-
	sign the Play Back feature to the [VOICE/C.S]
	button.
5.	Press the [DSP/SEL] knob. The		” icon re-

turns to appear continuously.

6.Press and hold the [F] button for one second to save the new setting and return to normal operation.

[DSP/SEL] knob

[F] button

RECORDING

1. Press and hold in the [VOICE/C.S] button for one second to initiate recording. The ” icon will appear in the display to confirm that recording is in progress. The recorder will store up to 20 seconds of the received audio and then halt the recording. The ” icon will go out.

2.You may halt the recording in progress, by pressing and holding the [VOICE/C.S] button for one second.

PLAYBACK

Press the [VOICE/C.S] button momentarily to begin playback of the recorded audio. The ” icon will blink in the display to confirm that playback is in progress.

ADVICE:

You may adjust the playback level of the recording with the [AF GAIN] knob

[VOICE/C.S] button

[VOICE/C.S] button

[AF GAIN] knob

Page 24

FT-450 OPERATION MANUAL

CONVENIENCE FEATURES

RECEIVER OPERATION (FRONT END BLOCK DIAGRAM)

The FT-450 includes a wide range of special features to suppress the many types of interference that may be encountered on the HF bands. However, real world interference conditions are constantly changing, so optimum setting of the controls is somewhat of an art, requiring familiarity with the types of interference and the subtle effects of some of the controls. Therefore, the following information is provided as a general guideline for typical situations, and a starting point for your own experimentation.

The FT-450’s interference-fighting circuitry begins in its “RF” stages, and continues throughout the entire receiver section. FT-450 allows configuration of the features described below.

R. FLT (IF Roofing Filters)

The Roofing filter, with a bandwidth of 10 kHz is provided in the 68 MHz First IF, right after the first mixer.

This filter provides narrow-band selectivity to protect the following IF and DSP stages, for special operating circumstances.

CONTOUR Filter (SEE PAGE 28)

The DSP Contour filter provides a unique capability on the receiver, providing either nulling or peaking of tunable segments of the receiver passband, so as to suppress interference or excessive frequency components on an incoming signal, or to peak those tunable frequency segments. The amount of nulling/ peaking, and the bandwidth over which it is applied, are adjustable via the Menu.

IF SHIFT (SEE PAGE 29)

The passband center frequency response of the IF

DSP filtering may be adjusted using this control.

IF WIDTH (SEE PAGE 30)

IF NOTCH (SEE PAGE 31)

The IF Notch filter is a high-Q notch filter that can significantly reduce, if not eliminate, an interfering carrier.

DNR (DIGITAL NOISE REDUCTION) (SEE PAGE 32)

The DSP’s Digital Noise Reduction (DNR) feature utilizes eleven different mathematical algorithms to analyze and suppress different noise profiles encountered on the HF/50 MHz bands. Choose the selection that provides the best noise suppression, which concurrently will allow the signal to rise up out of the noise.

AGC (SEE PAGE 27)

The AGC system is highly adaptable to changing signal and fading characteristics, making reception possible under the most difficult conditions.

The width of the IF DSP filtering may be adjusted using this control.

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CONVENIENCE FEATURES

ATT/IPO (ADJUST THE RECEIVING SENSITIVITY)

You may reduce the receiving signal strength to 20 dB when extremely strong local signals or high noise degrade reception. You may optimize the characteristics of the receiver front-end, for best reception, depending on the noise levels and the signal strengths.

Press the [ATT/IPO] button several times to set the desired selection, per the chart below.

ATT: OFF, IPO: OFF	Attenuator is OFF, and the incoming
	signal is amplified by the RF preampli-
	fier.
ATT: ON, IPO: OFF	Attenuator is ON, (the incoming signal
	is reduced by 20 dB) and the incom-
	ing signal is amplified by the RF pream-
	plifier.	[ATT/IPO] button	Block Diagram
ATT: OFF, IPO: ON	Attenuator is OFF, and the incoming
	signal bypasses the RF preamplifier,
	yielding direct feed to the first mixer.
ATT: ON, IPO: ON	Attenuator is ON, (the incoming signal
	power is reduced by 20 dB) and the
	incoming signal bypasses the RF
	preamplifier, yielding direct feed to the
	first mixer.

The selection will be indicated in the Block Diagram on the display.

NOTE

An attenuator is always “ON” between 30kHz and 1.7MHz.

NOISE BLANKER (INTERFERENCE REJECTION “SIGNALS WITHIN 3 KHZ”)

The FT-450 includes an effective Noise Blanker, which can significantly reduce noise caused by automotive ignition systems.

1. Press the [NB] button to activate the Noise

Blanker.

2.Press the [NB] button again to disable the Noise Blanker.

The selection will be indicated in the Block Diagram on the display.

[NB] button

Block Diagram

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FT-450 OPERATION MANUAL

CONVENIENCE FEATURES

AGC (TOOL FOR COMFORTABLE AND EFFECTIVE RECEPTION)

The AGC system is designed to help compensate for fading and other propagation effects, with characteristics that can be of particular value on each operating mode. The basic objective of AGC is to maintain a constant audio output level once a certain minimum threshold of signal strength is achieved.

Press the [AGC] button repeatedly to select the desired receiver-recovery time constant. The AGC status is indicated in the Block Diagram displayed on the display. For most operations, we recommend the

“AUTO” mode. You may disable the AGC by pressing and holding in the [AGC] button for one second.

AUTO	Sets the receiver-recovery time automatically
	depending on the operating mode.
FAST	[NB] button	Block Diagram
	Sets the receiver-recovery time to fast.
	This mode is suitable for CW/DATA recep-
	tion.
SLOW	Sets the receiver-recovery time to slow.
	This mode is suitable for SSB/AM reception.

NOTE:

Normally, the “AUTO” selection is satisfactory for most situations, but in the event of operation on a crowded band where you wish to receive a weak signal, you may wish to change the setting (to FAST, for example). The “AUTO” mode selections are:

OPERATING MODE	AUTO AGC SELECTION
LSB	SLOW
USB	SLOW
CW	FAST
AM	SLOW
FM	FAST (Fixed)
DATA	FAST

ADVICE:

If the AGC receiver-recovery time is set to “Off” by pressing and holding in the [AGC] button, the S-meter will no longer deflect. Additionally, you will likely encounter distortion on stronger signals, as the IF amplifiers and the following stages are probably being overloaded.

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CONVENIENCE FEATURES

CONTOUR (INTERFERENCE REJECTION “SIGNALS WITHIN 3 KHZ”)

The Contour filtering system provides a gentle perturbation of the IF filter pass band. so as to suppress or enhance particular frequency components in five steps, thus improving the sound and/or readability of a received signal.

1.Press the [DSP] button several times to set the

“>” icon to the “CONTOUR” indicator of the DSP Graphic Display on the display.

2.Press the [DSP/SEL] knob to engage the contour filter.

3.Press and hold the [DSP/SEL] knob for one second to toggle the contour filter’s level between

“null” and “peak”.

4.Rotate the [DSP/SEL] knob to achieve the most natural-sounding audio reproduction on the incoming signal.

The peak position of the contour filter is graphi- cally-depicted in the “CONTOUR” indicator of the

DSP Graphic Display on the LCD.

5.Press the [DSP/SEL] knob again to increase the contour filter’s level (“null” or “peak”).

6.To disable the contour filter, press the [DSP/SEL] button again. The graphic disappears from the

“CONTOUR” indicator of the LCD Display, confirming that the contour filter is no longer operating.

CONTOUR “NULL”

CONTOUR “PEAK”

CONTOUR “OFF”

CONTOUR GAIN “LOW”

CONTOUR “NULL”

CONTOUR “PEAK”

CONTOUR “OFF”

CONTOUR GAIN “HIGH”

“CONTOUR” Indicator

[DSP/SEL] knob [DSP] button

Refer to Figure “B”, this shows a “indentation” of the contour filter is center of a passband. Counter-clockwise rotation (to the left) of the [DSP/SEL] knob causes the indentation to move toward a lower frequency within the passband, while clockwise rotation (to the right) causes the indentation to move toward a higher frequency within the passband. By removing interference or unwanted frequency components on the incoming signal, it is possible to make the desired signal rise out of the background noise/interference, enhancing intelligibility.

A

B

C

IF	IF	IF
BANDWIDTH	BANDWIDTH	BANDWIDTH
DSP/SEL	DSP/SEL	DSP/SEL

QUICK POINT:

The steep slopes of the DSP filtering can, when adjusted aggressively, impart an unnatural sound to an incoming signal. Often, a narrow bandwidth is not the key to improving copy. The incoming signal itself may have undesirable or excessive frequency components. By judicious use of the Contour filter, the “shoulder” of the passband response may be altered, or components removed from within the passband, allowing the desired signal to rise above the background noise and interference in a manner not obtainable with other filtering systems.

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FT-450 OPERATION MANUAL