Tokyo Hy Power Labs HL 2500FX User Manual

INSTRUCTION MANUAL

HF ・50MHz LINEAR POWER AMPLIFIER

ON AIR

FAN

Pf/kW

Pr/VD/ID/ALC

ID

PROT

HF SOLID STATE LINEAR AMPLIF IER HL-2500FX

POWER OPER.

OFF STBY

OUTPUT

HI

LO

METER

ID

VD

Pr

ALC

ANT

B

A

AUTO

MAN’L

BAND

10

7

3.5

1.8

MAN’L

14 18/21

24/28

50

-0 -

1.Introduction

Thank you for purchasing the HL-2500FX. This compact and lightweight desktop HF linear power amplifier has a maximum input power of 2.9 kW. Our solid-state broadband power amp technology makes it the smallest and lightest in the industry.

Typical output power is 1.5 kW PEP/SSB on HF (1kW on 50MHz) with the drive power of 85-90 W. The built-in band decoder will let you forget about the band setting when the amplifier is connected to your modern radio through such band data cables as ICOM CI-V, DC voltage (Yaesu and Elecraft K3), and RS-232C (Kenwood). These data cables are optional parts. The one that matches your radio should be purchased separately.

2. Cautions

2-1 Unpack the amplifier, check the fan guard at the rear panel fan to see if there is any damage caused by the physical shock during the transportation. Fan blades must be free to rotate when powered. The amplifier is cooled by forced airflow. Several inches of clearance on the top and the rear wall are necessary to allow for smooth air intake into the fan. Do not block the air vents on the top cover.

2-2 Keep the amplifier out of direct sunlight, in a cool dry environment.

2-3 Internal high voltages, (AC, DC and RF), are present at all times, ON AIR or OFF. Internal access should be limited to avoid injury.

2-4 Turn off the AC main power immediately upon any unusual sounds, sights or odors. Check the multimeter readings of Vd and Id, the fuses and all cable connections around the amplifier. Please notify the dealer or the factory of any problems.

2-5 For your safety, do not operate the amplifier without adequate grounding. A proper ground connection will result in peak performance and stability, in addition to reduced RF strays or noises. 2-6 To eliminate the RF interference to such home appliances as TV, FM radio, telephone sets, etc.,

-1 -

it is recommended that clamp-on ferrite cores be inserted at both ends of the remote control cable, ALC cable, coaxial jumper cable, and antenna cables, as needed. Also, a common mode AC line filter (near the AC outlet), and in-line low pass filters on the antenna coaxial cable, (as necessary), are recommended.

2-7 The amplifier has fast acting sophisticated protection circuits controlled by the latest microprocessor technology. Please note, however, any such actions that cause the same fault to occur repeatedly, will lead to failure of the valuable final power FET transistors. Also note that the full power CW (or carrier) drive under the erroneous MANUAL BAND SET leads to the failure of the final power FET’s (See page 14, Section 10. Trial). In this sense, it is highly recommended that the amplifier is connected to the radio with Band Data Cable.

2-8 Before checking inside the amplifier, be sure to wait a few minutes for the high DC voltage to discharge (monitor Vd meter reading). The internal potentiometers for RF power detector, protection circuits, FET bias voltage circuit, etc., are precisely adjusted at the factory, and should not be altered. Doing so, would require readjustment with precision measuring instruments.

2-9 DC power supply selection is designed with wide AC line voltage technology and works with any voltage of 200V to 250V as well as 100V to 125V. 200V to 250V line, however, is recommended for the best stability and performance. Note that maximum output power is 1kW only, when 100V to 125V is connected. Prepare appropriate AC power cord plug that fits the outlet at your location.

2-10 Before powering on the amplifier, be sure to connect a dummy load (50 ohms, 1.5 kW min.) or a well-adjusted antenna to the output terminal. Operating without any load will cause extreme stress to the RF power FET’s, although protection circuits should work under critical conditions.

2-11 Required drive power is slightly less than 100 W to obtain the full

1.5 kW output. Do not attempt to operate with excessive drive from a high power transceiver. Transmitting high drive RF (over 100 W) into the amplifier will void the warranty.

-2 -

2-12 Keep the aluminum heat sink and air openings free from dust and blockages. Periodic cleaning will prevent degraded cooling efficiency.

2-13 For long continuous operation in RTTY/FM modes, it is recommended you reduce the RF drive levels by 20% to 30% lower output than CW/SSB modes.

2-14 To prevent damage to the precision electronic components, avoid extreme physical shock to the amplifier. If factory service is required, the amplifier MUST be shipped using the original box and packaging materials.

3. Features

3-1 Our solid-state broadband design engineers worked to make the HL-2500KFX, the lightest and most compact 1.5 kW amplifier in the industry. This world-class compact 1.5 kW amplifier is the easiest to handle and operate.

3-2 The amplifier is equipped with a newly developed band decoder. The amplifier’s decoder changes bands automatically as the data signal is received from the associated HF transceiver’s frequency bands.

3-3The amplifier’s main PA section includes 6 high power MOS FET THP2933’s by Microsemi, resulting in 1.5 kW PEP (SSB max.). The amplifier’s broadband characteristics require no further tuning once the operating band is selected.

3-4 The amplifier allows operation in full break-in CW mode due to the use of the amplifier’s high- speed antenna relays (made by Panasonic).

3-5With the unique duct structure design and the powerful blower fan, the aluminum heat sink block for RF PA module (and other components), are effectively cooled. The fan’s quiet operation allows for even the weakest DX signals to be heard.

-3 -

3-6 The amp utilizes an advanced 16 bit MPU (microprocessor) to run the various high speed protection circuits such as overdrive, high antenna SWR, DC overvoltage, band mis-set etc.

3-7 This amplifier is compatible with AC 200 V and 250 V as well as AC 100V to 125V.

3-8 For the safety of the operator, an Interlock system is employed. The AC power is shut down if the top cover is removed, and the automated safety interlock is activated.

3-9 An analog multimeter allows the operator to monitor Pr (Reflected power), Vd (Drain voltage of power FET), Id (Drain current) and ALC voltage.

3-10 For future expansion, the amplifier rear panel is equipped with a control cable connection socket TUNER, this is for the upcoming model HC-1500AT, auto antenna tuner by Tokyo Hy-Power Labs. in

2013.

-4 -

4. Specifications

Frequency : 1.8 ~ 50 MHz all amateur bands including

WARC bands Mode : SSB, CW, RTTY RF Drive : 85W typ. (100W max.) Output Power : 1.5 kW PEP/CW (typ.)

(1 kW on 50 MHz band)

Matching Transceivers

for Auto Band Decoder : Most ICOM, Yaesu, Kenwood, Elecraft K3,

Ten-Tec Drain Voltage : 50 V (when no RF drive) Drain Current : 60 A max. Input Impedance : 50Ω(unbalanced) Output Impedance : 50Ω(unbalanced) Final Transistor : THP2933 x 6 (MOS FET by Microsemi) Circuit : Class AB push-pull Cooling Method : Forced Air Cooling MPU : PIC 18F8722 Multi-Meter : Output Power Pf 2.5 kW

Reflected Power Pr 250W Drain Voltage Vd 60V

Drain Current Id 80A Input/Output Connectors : UHF SO-239 with low loss Teflon insulator AC Power : AC 100V ～250V (wide range) AC Consumption : 3 kVA max. when TX Dimension : 370 x 145 x 422 mm (W x H x D)

14.6 x 5.7 x 16.6 inches Weight : Approx. 18 kgs. or 41 lbs. Accessories : AC Power Cord x 1

RCA Plug (Stereo Type Pair Cable) x 1 Spare Fuse 20 A

(for AC 200V～250V line) x 2

Spare Fuse 20A (In yellow plastic)

(DC58V, for FET drain) x 3

Spare Fuse 1.6 A (Black)

(Miniature Fuse for RF Absolute Over-drive)

x 1

Spare Fuse 3.2 A (Black)

(Miniature Fuse for + 12V Control Circuit Supply

and External AUX, Supply)) x 2 Instruction Manual x 1 Warranty Card x 1

Optional Items : Band data cable to radios

-5 -

5. AC Line Voltage

5-1 The amplifier is designed to work with any AC voltage world wide, (200- 250 V and 100-125V).

When connected to 100-125V line, maximum available output

power is 1kW on HF and 500W on 6m band.

5-2 The correct AC plug (not included in the package), must be obtained locally due to the AC plug variations worldwide.

5-3 For the best performance and stability, it is strongly recommended that you will connect to AC 230V line (200V～250V).

6.Front Panel Description

8

9 10 11

ON AIR

FAN

ID

Pf/kW

POWER OPER.

OFF STBY

1 2 3

POWER Main power switch. At OPERATE, the amplifier is ready to go into

①

OUTPUT

HI

LO

Pr/VD/ID/ALC

VD

Pr

METER

ID

ALC

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

A

B

4 5 6

AUTO

MAN’L

BAND

10

7

3.5

1.8

7

MAN’L

14

14 18/21

18/21

24/28

50

ON AIR (TX) mode and at STBY, it is on STAND-BY mode.

OUTPUT To select High or Low Output levels. At LO, output is

③

approximately 60% of HI.

METER To change the multimeter scales. Meter reads Pr, Vd, Id and ALC.

④

ANT-A/B To Select antenna “A” or “B”. When main power switch is turned

⑤

off, it is switched to A.

-6 -

BAND-AUTO/MANUAL

⑥

To select band switching methods AUTO or MANUAL. When using AUTO, the manufacturer for the transceiver in use should be selected. When the band data cable is not used, MANUAL should be selected. (See page 19, 10 Operation / Setting)

BAND-MANUAL

⑦

Rotary switch for band change in the manual mode. While the transceiver is on Receive (RX) mode, turn to select the desired frequency band operate. The switches will not work when the transceiver and the amplifier are in Transmit (TX) mode.

METER (PF) Meter to read forward output power, PF. Full scale

⑧

is 2.5 kW, and it reads average power.

MULTIMETER

⑨

Pr (Reflected power from antenna), VD (FET drain voltage), ID (FET drain current) and ALC voltage are shown on the scale as selected by ④MANUAL select switch. Full scales are; PR: 250W, VD: 60V, Id: 80A, ALC: -10V.

ONAIR, FAN, ID, PROT (LED)

⑩

ON AIR : Lights when the amplifier is in transmit (TX) mode. FAN : Lights when cooling fan is running at high speed.

When the heat sink temperature reaches 35℃, cooling fan speed will continuously increase to enhance cooling capacity.

ID : Excessive ID Indicator (55A). Depending on the band and antenna situation, high drain currency may flow into FET’s. If 55A is exceeded, this LED lights to indicate that high ID is being drawn (This light does not necessarily mean a failure of the amplifier. However, if it lights too often, or too long, it is possible the drive power should be reduced and the antenna should be checked for SWR, to avoid stress to the FET’s)

PROT : Lights when protection circuit shuts down the amplifier. Various protection circuits are built in such as Over-drive, Band mis-set, high Ant-SWR, Over-temperature etc. Detailed explanations will follow.

LCD PANEL Displays modes of operation and protection circuit.

⑪

Detailed explanation will follow.

-7 -

7 Rear Panel Description

1 2 3 4 5 6

ANT B ANT A

INPUT

ALC ADJ

ALC

7 8

S

END

9 10 12 1611 13 14 15 17

SELECT

TUNER

CONT

SERIAL

USB

G

FUSE

FUSEFUSE

N

N D

D

REMOTE

DC OUT

DC OUT 12V2A

12V2A

USE

USEFUSE

F

FUSE

AC IN

ANT-B RF Output Connector. Connect coax cable to the antenna B.

①

ANT-A RF Output Connector. Connect coax cable to the antenna A.

②

TUNER DIN Socket. Connect the control cable from External Auto

③

Antenna Tuner, HC-1500AT and or HC-1.5KAT.

SELECT Switch to select the transceiver (i.e. “CI-V” for ICOM CI-V, “I”

④

for ICOM DC Voltage, “Y” for Yaesu, “K” for Kenwood, “Aux1-3” for three auxiliary positions of N.C./no connection.).

DC OUT 12V 2A, Auxiliary DC power supply terminal.

⑤

REMOTE Connector to switch the amp ON and OFF in the remote

⑥

location.

ALC ADJ. Potentiometer to adjust ALC voltage level. Minus 10 V is

⑦

available at maximum, when turned fully clockwise. Factory setting is 0 volts, with the pot turned fully counter-clockwise.

-8 -

ALC RCA Jack for ALC Voltage Output. Negative DC voltage

⑧

appears at the center pin, which is fed back to the ALC terminal of the transceiver. ALC is used to keep the amplifier output power at certain limits. Also it is useful when the transceiver output power is higher than 100W (Seen page 18, Section 9-C. 7 ALC Adjustment). Also consult with your HF transceiver’s user manual.

SEND RCA Jack. Connect the control cable from the ACC

⑨

terminal (or SEND, TX GND etc.) of the transceiver. Electrical conditions are 12V DC of open voltage at receive mode (RX), and short current of 35mA at transmit mode (TX).

INPUT RF input connector. Connect the coax jumper cable

⑩

from the transceiver.

CONT D-Sub (15pin) Socket. Connect the band data cable to

⑪

the transceiver/

SERIAL Serial connector for control. (D-Sub 9pin) To access

⑫

to CPU controller board through serial data bus.

USB USB Connector. To access to CPU board. This socket in

⑬

connected to serial connector ⑫.

GND Ground terminal.

⑭

AC IN 230V AC Main Socket. Socket for the AC power cord.

⑮

(Socket is EMI filtered.)

Fuse A pair of fuses for AC Mains. 250V/20A glass fuse.

⑯⑰

-9 -

７ LCD Panel Description

LCD displays the status of the amp in various situations. Capacity is 24 characters in two rows.

Basic Signs

Following s are the common signs to appear while amp is in operation.

*21MHz *28MHz

1.8MHz

3.5MHz 7MHz

10MHz 14MHz 18MHz 21MHz 24MHz 28MHz 50MHz

EXCD

BAND

Manual

AUT-CIV AUT-YAE AUT-KEN AUT-TEN AUT-ICM AUT-FLX AUT-ELC

AUT-FRQ

BAND SET

MODE

ANT-A ANT-B

ANTENNA

SELECT

1.8MHz AUT-CIV ANT-A

STBY Temp35C OUT_Hi

Other Signs

Initial Messages

TOKYO HY-POWER HL-2500FX V1.00

PLEASE WAIT CHECKING CONDITIONS

ACV is 198V Complete Initial Set-Up

OPERATION

STATUS

STB

Ｙ

OPER ONAR TRCK

TEMPERATURE

（℃）

Temp00C

｜

Temp99C

OUTPUT

SETTING

OUT_Hi

OUT_Lo

OUT_LoLIM

Protection Shutdown Message

24 MHz AUT-CIV ANT-A PROT BAND MISSET

Detailed explanation will follow.

-10 -

8-A Basic Connection

Following is a basic example of connection with the transceiver without using Band Data Cable.

Antenna

Caox. Cable

HL-2500FX

200V-

L

200V-

N

GND

SELECT

TUNER

CONT

SERIAL

USB

GN

hite

w

black

green

FUSE

D

NT

A

LC SEND

A

Transceiver

RCA plug cable

AN T B

ALC ADJAL

INPUT

C

ANT A

AN

T B

INP

UT

SE ND

AC200V

Note

SEND

■

SEND socket is named “RELAY”, “TX GND”, “SEND” etc depending on radio models. (Refer to user manual of the transceiver.)

ALC

■

ALC cable must be connected especially when driving the amp with high power transceiver. Otherwise shut-down will frequently occur.

REMOTE

DC OUT 12V1A

FUSE

AC IN

-11 -

８-B Connection with Auto Tuner HC-1500AT

Following illustration shows a connection example with ICOM radio(CI-V) and Tokyo Hy-Power HC1500AT, auto antenna tuner. HC-1500AT is equipped with such an advanced function as receiving

arious data (ex. Band data, SEND command etc.) from the radio and then passing them to the

v linear amp. Example below utilizes this feature. (Refer to the HC-1500AT manual for the details.)

R

EMOTE

ANT

ALC RELAY

Coax cable

Rower cable

HL-2500FX

FUSE

REMOTE

DC OUT 12V1A

FUSE

AC IN

A

NT 3 ANT 2 ANT 1

OUT

Transceiver

RCA plug cable

ANT B ANT A

ANT A

INPUT

ALC ADJALC

SEND

RCA plug cable

CI-V connection cable

SELECT

TUNER

CONT

SERIAL

USB

RCA plug cable

Option : ICOM cable

GND

Note

HL-2500FX can be combined with our HC-1.5AT, auto tuner as well. Connect TUNER socket of HL-2500FX to CONT’L socket of HC-1.5KAT. Interface technology of our original design enables the joint frequency band setting.

Antenna

T

RX

HC-1500AT

K

C

I N

OUT

ENWOOD

IVSTBY

OUT

I N

C

ONTYAESU

D

I N

C12V

DC power for HC-1.5KAT can also be fed from auxiliary DC supply (DC OUT 12V/2A) terminal of HL-2500FX.

However, tuner will get “THRU (By-pass) mode when 50MHz is band set, as HC-

1.5KAT has no 50MHz position.

-12 -

９ Operation

9-A Quick Learning / About Status Modes

There are four operation status modes of STBY, OPER, ON-

1) STBY (Stand-by) Mode

AIR, and PROT.

1.8MHz AUT-CIV ANT-A

STBY Temp35C OUT_Hi

ON AIR

F

AN

I

Pf/kW

POWER OPER.

OFF STBY

2)

Pr/VD/ID/A

C

L

OUTPUT

HI

Pr

LO

ＯＰＥＲ

D

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-

METER VD

I

D

2500FX

ANT

ALC

A

B

(Operate) Mode

1.8MHz AUT-CIV ANT-A

OPER Temp35C OUT_Hi

ON AIR

FAN

I

METER

D

P

ROT

F SOLID STATE LINEAR AMPLIFIER HL-

H

2500FX

ID

ANT

A

B

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/A

L

C

V

DALC

Pr

AUTO

MAN’L

AUTO

MAN’L

This is a status when POWER switch is only turned on. RF path is in THRU (or by-pass), and DC supply to FET drain is shut down. You may change BAND and other settings at this state.

BAND

M

AN’L

1

10

7

.5

3

1.8

4 1

8/21

2

4/28

5

0

This is a status when POWER switch is turned on, and OPER/STBY switch is tuned to OPER. RF path is in THRU, and amp is turned into ON-AIR, as the radio’s PTT is switched on. You may change BAND setting at this state.

CAUTION

BAND

M

AN’L

10

3

1.8

14

7

18/21

.5

24/28

50

For your safety, the amp can not start up, if POWER switch is at OPER.Display below will appear.

PSE STBY OPERSW!

送信

3) ON-AIR(On-Air) Mode

1.8MHz AUT-CIV ANT-A

ONAR Temp35C OUT_Hi

ON AIR

FAN

METER

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-

ID

2500FX

BAND

ANT

AUTO

10

A

7

3.5

1.8

MAN’L

B

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

Pr/VD/ID/A

LC

VD ALC

HI

Pr

LO

4) PROT (Protection) Mode

1.8MHz AUT-CIV ANT-A

PROT Over Heat

ON AIR

FAN

METER

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-

ID

2500FX

BAND

ANT

AUTO

10

A

7

3.5

1.8

MAN’L

B

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

Pr/VD/ID/A

LC

VD ALC

HI

Pr

LO

MAN’L

Turn to STBY once and turn to OPER again for reset.

This is a status when transceiver’s PTT is switched on, while POWER is turned on and OPER/STBY switch is turned to OPER. The amp is ready to amplify the driving signal from the transceiver. You may not change BAND and other setting at this state.

14 18/21

24/28

50

This is a status when PROTECTION circuit has tripped to shut off the amplifier. RF path becomes THRU, and internal circuitry may be shut down according to kinds of protections. Detailed explanation will follow.

14 18/21

24/28

50

-13 -

９-B Quick Learning / About Basic Signs On LCD and LED Lamps

1) CB Band Inhibit

he amp will shut down the transmission when

With ICOM, KENWOOD

EXCDMHz AUT-CIV ANT-A STBY Temp35C OUT_Hi

With YAESU, Manual Band Set, Frequency Count Band Set

T driving signal of 26,000 through 27,999 (CB band) is detected due to FCC rule. When combining with ICOM and Kenwood radios, frequency data of operation is passed to CPU, even at RX state, to prohibit the transmission. EXCDMHz Is signed on LCD. (Freq. exceeded)

28 MHz AUT-YAE ANT-A

PROT INHIBIT FREQ

2) OPER. MODE Switch

LCD message

PSE STBY OPERSW!

3) TRACK Sign

3.5 MHz AUT-CIV ANT-A

TRCK Temp35C OUT_Hi

4) ID Lamp

When with Yaesu Radio, and with manual band set and freq. count band set methods, the amp transmission will be shut down when at TX

PROT INHIBIT FREQ will appear on LCD.

The amp will be shut down, if POWER switch is turned on, while OPER/STBY is set at OPER. PSE STBY OPERSW! To reset, switch OPER. off and on. This is to avoid unintended sudden transmission, for your safety

TRACK (Tracking) sign will appear, when the BAND changes , for a short period of 0.2 sec. This indicates that band frequency data is being sent over to combined auto tuner.

EEE

E

ON AIR

FAN

ID

PROT

5) FAN Lamp

ON AIR

FAN

ID

PROT

D lamp lights when FET drain currents

Ｉ

exceeds 55A, and is a kind of peak current indicator. It is not a problem, if it lights only at a voice peak (SSB).

The cooling speed changes in proportion to the variation of internal temperature. As the ONAIR time gets longer , It is normal if fan noise sounds louder and FAN lamp to light brighter.

-14 -

９-C Quick Learning / About TX Trial

We recommend for you to run a trial operation, at first, under the Manual Band Set mode (without band data cable connected to radio). With this trial, you can check if antenna, cables, and AC power line are in a proper condition. In case you encounter any trouble under Auto Band Set connection, later, you could return to this trial mode to see where the cause of trouble is.

1) Setting Before Power ON

Front Panel

POWER=OFF・OPER=OFF (STBY)

・

OUTPUT=HI・BAND=MANU‘L

・

(Others=Any as needed)

・

Rear Panel

ALC=C.C.W (Fully counter clock-wise)

・

Select=Any position

・

Transceiver

Mode=CW (or RTTY)

・

RF POWER LEVEL=Minimal

・

P

f/kW

POWER OPER.

OFF STBY

OUTPUT

H

LO

I

Pr/VD/ID/ALC

Pr

METER

ID

VD ALC

NT A ANT B

A

NPUT

I

ALC ADJ

LC

A

END

S

O

N AIR

F

AN

I

D

P

ROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

A

B

A

MAN’L

AND

B

UTO

MAN’L

10

7

3.5

1.8

Any position

2) Powering ON

Turn the POWER on and the amp will start to execute initial self-check, Following messages will appear on LCD until status reaches normal operation mode.

SELECT

EMOTE

R

COUT

D

UNER

T

CONT

SERIAL

U

SB

1

4

18/21

24/28

50

12V1A

USE

F

FUSE

GND

F

USE

F

AC IN

１

sec

Signs

TOKYO HY-POWER HL-2500FX V1.00

PLEASE WAIT CHECKING CONDITIONS

ACV is 198V Complete Initial Set-Up

1.8MHz Manual ANT-A

STBY Temp35C OUT Hi

Normal MODE

Initial Sign

Checking

Checking Over

Operation Ready

Pf/kW

POWER OPER.

OFF STBY

ON AIR

FAN

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ID

ANT

A

B

AUTO

MAN’L

BAND

MAN’L

10

7

3.5

1.8

14 18/21

24/28

50

OUTPUT

LO

HI

Pr/VD/ID/ALC

Pr

METER

VD ALC

NOTE

After turning POWER switch on, MPU chip will check to see if AC line voltage is usable for the amplifier.

-15 -

９－C Quick Learning / About TX Trial

3）Band Setting

Set the freq. BAND as desired for both transceiver and HL-2500FX.

Ex.: 14MHz)

(

4MHz

1

f/kW

P

POWER OPER.

O

FF STBY

OUTPUT

H

L

I

O

Pr/VD/ID/ALC

Pr

ON AIR

F

AN

ID

PROT

METER

ID

VD ALC

14 MHz Manual ANT-A

STBY Temp35C OUT Hi

H

F SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

A

B

BAND

A

UTO

1

0

7

3

.5

1

.8

M

AN’L

MAN’L

設定

14 18/21

2

4/28

50

NOTICE

When the BAND switch is turned under Man’l Set mode, selected BAND will shift as follows:

If turned clock-wise, BAND will shift in the order of 14⇒21⇒28⇒50MHz.

・

And if BAND is turned back, counter clock-wise, BAND will shift in the order of 50⇒24⇒18⇒14MHz.

・

C.W.

BAND 10

7

3.5

1.8

1.8MHz

3.5MHz

7MHz

10MHz

14MHz

21MHz

28MHz

50MHz

MAN’L

↓

14

18/21 24/28

50

C.C.W.

BAND 10

7

3.5

1.8

50MHz

2４MHz

18MHz

14MHz

10MHz

7MHz

3.5MHz

1.8MHz

MAN’L

↓

14

18/21

24/28

50

Example

If you are shifting up from 14 to 18, you have to turn to 24/28 once, and then turn back to 18/21.

BAND

MAN’L

10

7

3.5

1.8

BAND

MAN’L

10

7

3.5

1.8

BAND

MAN’L

10

7

3.5

1.8

14 18/21

24/28

50

14 18/21

24/28

50

14 18/21

24/28

50

-16 -

９-C Quick Learning / About TX Trial

4) Switching to OPER

At OPER. (Operate Mode) status, the amp is ready to run together with combined transceiver.

ON AIR

FAN

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

P

r/VD/ID/ALC

M

V

DALC

Pr

ETER

I

5) Transmitting

Key (RTT) the transceiver with CW (or RTTY) carrier. The amp is driven to transmit.

ID

P

ROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

D

ANT

14 MHz Manual ANT-A

OPER Temp35C OUT Hi

BAND

AUTO

A

MAN’L

B

MAN’L

0

1

7

3.5

1.8

14

8/21

1

24/28

50

N AIR

CW (or RTTY)

P

f/kW

OWER OPER.

P

OFF STBY

Pr/VD/ID/ALC

UTPUT

O

METER

ID

VD ALC

HI

r

P

LO

O

FAN

ID

PROT

H

F SOLID STATE LINEAR AMPLIFIER HL-2500FX

NT

A

B

14 MHz Manual ANT-A

ONAR Temp35C OUT Hi

6) Increasing Output

Adjusting the knob of transceiver ‘s RF LEVEL, increase output level to desired value. (1,500W is maximum limit on HF, and 1,000W on 50MHz.

Observe reflection from antenna and RFI (interference) to nearby home appliance. Insert multiple number of clamp-on ferrite cores respectively to every coax cable s as well as various control and grounding cables around the amp and the transceiver.

ON AIR

FAN

CW (or RTTY)

Output Level

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/ALC

Pr

METER

ID

VD ALC

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

A

B

AUTO

MAN’L

AUTO

MAN’L

BAND

MAN’L

14

18/21

24/28

50

14

18/21

24/28

50

10

7

3

.5

1

.8

BAND

10

7

3.5

1.8

-17 -

14 MHz Manual ANT-A

ONAR Temp35C OUT Hi

９-C Quick Learning / About ALC Adjustment

7) ALC Adjustment

ALC helps the amp keep its output power at desired level. ALC is effective to avoid overdriving of the amp, especially when high power transceiver is combined.

When adjusting ALC, use a dummy load of 2kW capacity, and /or a good antenna with SWR of 1:1 or less.

“ALC ADJ” pot should be, at first, turned fully counter clock-wise.

①

Select desired freq. band and CW (or RTTY) mode.

②

Increase the driving power from the radio so that required output power is achieved from the

③

amp.

Carefully increase further the drive until five to ten percent increase is obtained for output.

④

Turn “ALC ADJ” pot clock-wise carefully so that output gradually decreases, to reach desired

⑤

level.

(For more details, see “Hints and Tips of ALC, www.tokyohypower.com)

NT A ANT B

A

ALC ADJ

ALC

SELECT

TUNER

ONT

INPUT

SEND

C

GND

ERIAL

S

USB

REMOTE

COUT

D

2V1A

1

FUSE

CIN

A

-18 -

１０ Operation / Setting

10-A With ICOM (CI-V)

Connect twin RCA plug cable (included in the package), and optional ICOM band data cable as shown in the figure below. Set AUTO/MAN’L switch to AUTO position and select ICOM with SELECT switch located on the rear panel. AUTO-CIV will be displayed on LCD panel. Set the CI-V menu of ICOM radio as shown below, and HL-2500FX will follow the band of ICOM radio.

Connection

ANT

ALC RELAY

REMOTE

Switch Setting

Coax Cable

ICOM Transceiver

RCS plug cable

(Option) ICOM Band Cable

ICOM

To Antenna

ALC ADJALC

ANT B

INPUT

SEND

ANT A ANT A

14 MHz AUT-CIV ANT-A

STBY Temp35C OUT Hi

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

HL-2500FX

Single Phase

ANT A ANT B

ALC ADJ

Pr/VD/ID/ALC

METER

ID

VD ALC

Pr

AC200V

NPUT

I

ALC

END

S

ON AIR

FAN

ID

PROT

SELECT

TUNER

CONT

GND

SERIAL

USB

White

200V-L

200V-N

Black Green

GND

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

AUTO

A

3.5

1.8

MAN’L

B

REMOTE

DC OUT 12V1A

FUSE

AC IN

GND

MAN’L

REMOTE

COUT

D 12V1A

USE

F

FUSE

USE

F

USE

F

AC IN

14

18/21

24/28

50

SELECT

UNER

T

CONT

ERIAL

S

USB

BAND

10

7

Setting of ICOM CI-V Menu

CI-V BAUD RATE: 9600 [bps] CI-V ADDRESS: 5Ch CI-V Transceiver: ON CI-V with IC-731: OFF

Refer to ICOM’s instruction manual for CI-V details.

※

-19 -

１０ Operation / Setting

10-B With YAESU

Connect twin RCA plug cable (included in the package) and optional YAESU band data cable as shown in the figure below. Set AUTO/MAN’L switch to AUTO position and select YAESU with SELECT switch located on the rear panel. AUT-YAE will be displayed on LCD panel , and HL-2500FX will follow the band of Yaesu radio.

Connection

ANT

EXT_ALC

Switch Setting

YAESU

TXGND

RCA plug cable

Coax Cable

BAND DATA

ANT B ANT A

ALC ADJALC

YAESU Band Data Cable

14 MHz AUT-YAE ANT-A

STBY Temp35C OUT Hi

To Antenna

ANT A

INPUT

SEND

HL-2500FX

SELECT

TUNER

CONT

SERIAL

USB

AC200V

Single Phase

200V-L 200V-N

GND

ANT A ANT B

INPUT

LC ADJ

A

LC

A

SEND

White Black Green

ELECT

S

UNER

T

ONT

C

SERIAL

USB

GND

REMOTE

DC OUT 12V1A

FUSE

AC IN

REMOTE

DC OUT

2V1A

1

FUSE

GND

FUSE

CIN

A

ON AIR

FAN

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

ID

AUTO

MAN’L

10

3.5

1.8

A

B

YAESU

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/ALC

Pr

METER

VD ALC

Setting of Transceiver

Some Yaesu models require initial settings for maximum output and T/R relay (TX GND) output. Refer to the user manual for details.

-20 -

BAND

7

MAN’L

14 18/21

24/28

50

１０ Operation / Setting

10-C With KENWOOD

Prepare a control cable for PTT(SEND) and ALC. One end should be DIN plug for REMOTE of Kenwood radio. The other end should be two RCA jacks of the amp. (Refer to Kenwood manual for REMOTE socket pin assignment.) Set AUTO/MAN’L switch to AUTO position and select KENWOOD with SELECT

witch located on the rear panel. AUT-KEN will be displayed on the LCD panel,

s and HL-2500FX will follow the band of Kenwood radio.

Band Data Cable

Connection

To Antenna

Coax Cable

HL-2500FX

ANT

EXT_ALC

TXGND

Switch Setting

トランシーバ

REMOTE

KENWOOD

ALC ADJALC

ANT A

INPUT

SEND

COM

ANT B ANT A

RCA Plug Cable (ALC/SEND)

(Not included)

14 MHz AUT-KEN ANT-A

STBY Temp35C OUT Hi

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/ALC

Pr

Single Phase

NT A ANT B

A

ALC ADJ

METER

ID

VD ALC

AC200V

ON AIR

INPUT

FAN

ID

ALC

SEND

PROT

SELECT

TUNER

CONT

GND

SERIAL

USB

200V-L

200V-N

GND

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

White Black Green

ANT

AUTO

A

MAN’L

B

REMOTE

DC OUT 12V1A

FUSE

AC IN

G

MAN’L

REMOTE

DC OUT 12V1A

FUSE

ND

USE

F

USE

F

AC IN

14 18/21

24/28

50

SELECT

TUNER

CONT

SERIAL

USB

BAND

10

7

3.5

1.8

Setting of Transceiver

Baud Rate Stop Bit

Refer to Kenwood manual for details.

※

9600[bps]

：

bit

：１

-21 -

１０ Operation / Setting

10-D With ELECRAFT(K3)

Connect included twin RCA plug cable and optional Elecraft band data cable as shown in the figure below. Set AUTO/MAN’L switch to AUTO position and select ELECRAFT with SELECT switch located on the rear panel. AUT-ELC will be displayed on LCD panel and HL-2500FX will follow the band of K3 radio.

Connection

Coax Cable

ELECRAFT(K3)

Switch Setting

ACC

KEY OUT

Band Data Cable

EBC-2.4K/K3

To Antenna

ALC ADJALC

ANT A

INPUT

SEND

ANT B ANT A

SEND

ALC

RCA Plug Cable

14 MHz AUT-ELC ANT-A

STBY Temp35C OUT Hi

HL-2500FX

AC200V

Single Phase

200V-L 200V-N

GND

ANT A ANT B

INPUT

LC ADJ

A

LC

A

SEND

SELECT

TUNER

CONT

SERIAL

USB

GND

White Black Green

ELECT

S

UNER

T

ONT

C

SERIAL

USB

FUSE

GND

FUSE

REMOTE

DC OUT 12V1A

FUSE

AC IN

REMOTE

DC OUT

2V1A

1

FUSE

CIN

A

Pf/kW

ELECRAFT(K3)

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Setting of Transceiver

Setting of “DONFIG menu” is required for K3transceiver. (Refer to K3 manual for details).

-22 -

Pr/VD/ID/ALC

Pr

METER

ID

VD ALC

ON AIR

FAN

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

A

B

AUTO

MAN’L

BAND

MAN’L

10

7

3.5

1.8

14 18/21

24/28

50

１０ Operation / Setting

10-E Frequency Count Method

When there is no way of auto band-set connection between the transceiver and the amplifier and or when it is desired to make mutual band connection simple, auto band-set-operation is feasible utilizing the frequency counting feature built in this amplifier. Set AUTO/MAN’L switch to AUT-FRQ with SELECT switch located on the rear panel. AUT-FRQ will be displayed on LCD panel and the amp will set the band automatically reading the frequency of driving signal . If the transceiver is keyed, the amplifier will set the operating

and automatically by reading the frequency of driving signal.

b

CAUTION

There is a time delay of 20 milli-sec from RX to TX state change under this method. Full break-in CW is not available with this method, for this reason.

Connection

Transceiver

ANT

ALC SEND

Switch Setting

Coax Cable

RCA Plug Cable

To Antenna

AN

T B

ALC ADJAL

INPUT

C

SE ND

AN T A

INP

UT

NT A

A

14 MHz AUT-FRQ ANT-A

STBY Temp35C OUT Hi

HL-2500FX

AC200V

200V-L

200V-N

GND

NT A ANT B

A

INPUT

ALC ADJ

LC

A

SEND

SELECT

TUNER

CONT

SERIAL

USB

GN

D

White Black Green

FUSE

SELECT

TUNER

CONT

SERIAL

USB

REMOTE

DC OUT 12V1A

FUSE

AC IN

FUSE

ND

G

FUSE

EMOTE

R

DC OUT 12V1A

USE

F

USE

F

AC IN

ICOM

Setting of Transceiver

There is nothing required in particular.

-23 -

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/ALC

Pr

METER

ID

VD ALC

ON AIR

FAN

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

A

B

AUTO

MAN’L

BAND

MAN’L

10

7

3.5

1.8

14

18/21

24/28

50

１１ Protection Circuit

11-A Interlock Protection

“Interlock” is built in for the safety of operator, avoiding the unexpected accidents from

★

electric and thermal shocks.

Sign Status

All power shut down. No sign.

Main DC P. Supply (Vdd) Shut down AC Magnet Relay Shut down RF path Shut down Fan Control Shut down

Reset

Fix top cover securely

①

Cool off the amplifier sufficiently

②

Pf/kW

POWER OPER.

FF STBY

O

) Cover Interlock

１

OUTPUT

H

L

P

r/VD/ID/ALC

M

ETER

ID

VD ALC

I

Pr

O

N AIR

F

AN

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

A

UTO

A

AN’L

M

B

BAND

MAN’L

10

7

3

.5

1.8

14 18/21

24/28

5

0

When the top cover is removed, cover switch is activated to shut down AC power line.

(POWER Lamp, LCD panel, cooling fan are all turned off.)

2) Temperature Interlock

When the internal temperature of the amp reaches 90℃, AC power line is shut down.

(POWER Lamp, LCD panel, cooling fan are all turned off.)

In case all the lamps go off suddenly while transmitting , stop the transmission, unplug AC cord, and wait for five minutes. Check if AC main fuses are blown, or if the temp. inter-lock has been activated.

REMARKS

Location of Interlock Switch

Interlock Switch

Power Supply

Rear Side

Front Side

The amp temperature is normally checked by thermal sensor and microprocessor. “FAULT” temp protection is usually switched on in prior to Temp. Interlock to turn on, the amp may have been heated by other heat source and or microprocessor is in failure.

-24 -

１１-B Fault Protection

FAULT PROTECTION

Fault Protection is built in to avoid the damage to the amp due to the severe cause of fault within the amplifier or on the AC power line.

Sign Status

PROT lamp glows. Message is displayed

Main DC P. Supply Shut Down

1.8MHz AUT-CIV ANT-A

AC Magnet Relay Shut Down RF Path Thru

PROT OVER TEMP

Fan Control ON

Protection Sign

O

N AIR

FAN

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/A

LC

V

DALC

Pr

METER

ID

PROT

HF SOLID STATE LINEAR AMPLIF IER HL2

500FX

I

D

ANT

BAND

AUTO

A

B

MAN’L

10

7

3.5

1.8

14 18/21

2

50

4/28

List of Fault Protection

Reset

Set OPER/STBY switch to STAND-BY position, and turn POWER switch off and on.

Prot. LCD Sign Description Remedy

Over Heat FAULT OVER TEMP Heat sink temp reached

９５℃

Cool off to reset

Fan Faulty FAULT FAN FAIL FAN faulty or speed too low Repair at factory

AC Line High FAULT OVER LINE VOLT AC line exceeded 250V Check AC line

AC Line Low FAULT UNDER LINE VOLT AC line fell to 85V or lower Check AC line

Fuse Blown FAULT FUSE BLOW Internal fuse blown Refer to Pxxx

Main P.S.

FAULT DC SUPPLY OUT Output of main DC P.S. (Vdd) faulty Repair at factory

Faulty

Main P.S.

FAULT DC SUPPLY Primary side of main DC P.S. faulty Repair at factory

Faulty

-25 -

１１ Protection Circuit

11-C Protection / Slight Fault

Another group of protection circuits are provided to shut down the transmission when the other faults occur within the amp.

Sign Status

PROT lamp glows. Message is displayed

1.8MHz AUT-CIV ANT-A

Main DC P. Supply (Vdd)

）

AC Magnet Relay ON

On

RF Path Thru

PROT CROWBAR

FAN・Control Circuit ON

Protection Sign

Reset

Switch “OPERATE/STBY” off and on.

P

f/kW

P

OWER OPER.

O

FF STBY

O

UTPUT

H

L

I

O

Pr/VD/ID/A

L

C

P

r

M

ETER

ID

VD ALC

ON AIR

FAN

ID

P

ROT

HF SOLID STATE LINEAR AMPLIF IER HL2

500FX

A

NT

AUTO

A

B

M

AN’L

BAND

10

3

1.8

MAN’L

1

7

.5

1

24/28

5

4 8/21

0

List of PROT

Prot. LCD Sign Description Re-adjust ALC

Over Out put Power

PROT OVER POWER RF output power exceeded 1,500W Re-adjust ALC

Inhibit Freq. PROT INHIBIT FREQ CB band freq.(26,000～27,999MHz)

Check x-ceiver

detected

Reflected Power

Over Current

Over Dissipation

PROT OVER Pr Power reflection from antenna

Check antenna

exceeded 150W

PROT OVER CURRENT FET drain current (Id) exceeded 70A Check antenna

Re-adjust ALC

PROT OVER Ploss FET drain dissipation (Pd) exceeded

2,000W

Tj Over PROT OVER Tj FET junction temperature exceeded

190

℃

Over Drive PROT OVER DRIVE RF drive power exceeded 150W Readjust ALC,

decrease RF drive from X-ceiverf

Unbalance PROT COMB HEAT PA combiner temperature exceeded

70

℃

Check antenna SWR

Contact factory

Crowbar PROT CROWBAR Crowbar prot. Circuit switched on See below

＊

Band Misset

PROT BAND MIS-SET Band set incorrect., PA failed Check band setting

Contact factory

-26 -

１１ Protection Circuit

11-C Protection / Slight Fault

Crowbar

When the FET drain current and reflected power from antenna significantly exceed the limit, crowbar circuit trips instantly to protect valuable FET finals, without waiting for the response from the

icroprocessor. It blanks the RF drive for 100ms. During this time period, microprocessor detects the

m abnormal states to issue shut down command under “PROT CROWBER”.

-27 -

１１ Protection Circuit

11-D Protection / Reduced Power Operation

If slight failure occur such as “over current”, for example, while working under OUT=Hi mode (High output mode), the amp is not necessarily shut down, but enters into reduced power operation mode

Sign Status

1.8MHz AUT-CIV ANT-A

ONAR Temp35C OUT_LoLIM

Following message displayed

Main DC P. Supply (Vdd) AC Magnet Relay ON RF path ON (Amplifying) Output Setting) Lo（Low Vd FAN, control circuit ON

P

f/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/A

L

C

P

r

METER

ID

VD ALC

ON AIR

FAN

ID

P

ROT

HF SOLID STATE LINEAR AMPLIF IER HL2500FX

ANT

AUTO

10

A

3.5

1

B

MAN’L

BAND

7

.8

MAN’L

1 1

24/28

5

4 8/21

0

Reset

Release PTT (to RX) once, and key (to TX) again.

List of Protection

Protection LCD Sign Description Remarks

Sight Over Current

Drain current (Id) exceeded 55A for 60sec

When exceeding 70A, PROT shuts down immediately

）

Low Voltage Applied

）

Slight Over Heat Heat sink temp. exceeded

75

℃

Over Dissipation Total FET drain

OUT: LoLim

dissipation exceeded 2,000W

Over Tj FET junction temp (Tj)

exceeded 190

℃

When exceeding 95℃,FAULT PROT shuts down

If 2,000W exceeded, even reduced power mode, PROT shuts down

If Tj keeps 90℃, even with reduced power mode, PROT shuts down

１２ Techn ical Information about Various Connectors

12-A CONT Connector (Control)

Various control signals are concentrated in this connector. (D-SUB 15pin

onnector, Female)

C

Pin Assignment

Pin # Signal Description Remarks

1 +12V Auxiliary DC P. Supply +12V0.1A Never short

9 +5V Auxiliary DC P. Supply +5V0.1A Never short

2 RXD Serial Comm. Port (RX) For EIA232_TRX

10 TXD Serial Comm. Port (TX) For EIA232_TRX

3 BDY0 YAESU Band Data Input 0bit With pull-up resistor

11 BDY1 YAESU Band Data Input 1bit With pull-up resistor

4 BDY2 YAESU Band Data Input 2bit With pull-up resistor

12 BDY3 YAESU Band Data Input 3 bit With pull-up resistor

5 GND Signal Ground

13 AN-IC ICOM Analog Freq. Info. IN

6 AN-IC-G ICOM Analog Freq. Info. Gnd

14 T/R T/R（SEND) IN Connector in parallel

7 GND Signal Ground

15 CIV-T ICOMCI-V TX Port

8 CIV-R ICOMCI-V RX Port

12-B TUNER Connector

For connector to THP HC-1.5KAT, and HC-1500AT tuners. (DIN 7pin Connector, Female, Hoshiden TCS4470-0140577)

Pin # Signal Description Remarks

with “SEND”

2 GND Signal Ground

4 EVENT Event IN (FREQ request

signal)

7 FREQ Freq. Information OUT FREQOUT=MHz/1000

1・3・5・6 No Connection

-29 -

１２ Technical Information About Various Connectors

12-C CONT Connect (Control)

erial connector for utility use (D-SUB 9pin Connector, Female)

S

Pin Assignment

Pin # Signal Description Remarks

2 RD RX Signal For straight cable

3 TD TX Signal For straight cable

5 GND Signal Ground

Others No Connection

Note

This connector is for utility use, and can not be connected to the transceiver. It is a different one from TD/RD of CONT connector.

12-D DC12V Connector

Auxiliary DC power supply of DC12V2A capacity. Suitable for feeding auto tuner. (Type SMPo3V by Nichiatsu)

Pin Assignment

Pin # Signal Description Remarks

1 DC12V Auxiliary DC P.S.12V2A

2 No connection

3 GND Return

-30 -

１２ Technical Information About Various Connectors

12-E REMOTE Connector

For controlling the amplifier from the remote location. (Type SMP04V by Nichiatsu)

Pin Assignment

Pin # Signal Description Remarks

1 WAKE-UP+ Start up voltage IN

2 WAKE-UP- Start up voltage IN

OPER_EXT External OPER Input To enter “Operate”

3

4 GND Signal GND

＋

－

Note

Note : Please refer to “Remote Controlled Operation” Section.

Start up when DC12V applied.

(DC12V100mA)

when pin 3 grounded (15mA). 5V, when Open

-31 -

１２ Technical Information about Various Connectors

12-F About SEND Interface

Circuit

+12V

1k

Ω

To relay

To control circuit

From TX inhibit

12-G ALC Interface

Circuit

Relay

SEND(RCA)

CONT14pin

TX/RX switch terminal (SEND socket) is controlled through photo-MOS relay rather than thru direct relay switching. Open voltage is +12V, and draws 10ma when grounded. When PROTECTION trips, photo-MOA relay for TX Inhibit becomes open and TX is shut down

When the sum of forward output power (voltage) and reflected output power (voltage) exceeds the programmed ALC level, negative voltage is produced at ALC terminal.

ALC circuit consists of an Ope-amp, and it is preferable that input port of the transceiver for the external ALC voltage has an input impedance of 10K

minimum.

Ω

12-H About ICOM CI-V Interface

Circuit

CONT

1

9

2

10

3

11

4

12

13

14

15

5

6

7

8

3.5mmPHON O PULG

Maximum ALC output of -10V is usually produced. Some of old fashioned radio may require higher voltage. Built-in gain switch needs switched in that case.

CI-V signal lines are connected to pins 7, 8 and 15 of CONT Connector.

-32 -

１２ Technical Information about Various Connectors

12-I About YAESU and K3 Interface

Circuit

1

9

2

10

3

11

4

12

5

13

6

14

7

15

8

CONT

BAND A BAND B

BAND C BAND D

GND

12-J About KENWOOD Interface

Circuit

CONT

10

11

12

13

14

15

1

9

2

3

4

5

6

7

8

1

6

2

7

3

8

4

9

5

Four bits of band data (A to D) are connected to CONT connector as illustrated.

This interface is used for Elecraft K3 as well.

Kenwood uses TD/RD pins of CONT connector for EIA232C based serial communication. Loop back wiring for pin 7 and 8 is required at Kenwood connector side.

12-H ICOM(BAND VOLTAGE）Interface

Circuit

1

9

CONT

2

10

3

11

4

12

5

13

6

14

7

15

8

ICOM ACC2 Connector

BAND

GND

4 2

-33 -

13 Maintenance

13-A How to remove the top cover

To remove the top cover, unscrew nine M3 bolts and eight M4 bolts on the upper surface, as well as six each M3 bolts at right and left surfaces of the cover.

Inter-Lock

Left surface

M3x6 6

CAUTION

Upper Surface M3x6 9（Black

M4x8 8（Red

）

Lift the cover carefully.

）

Right surface

M3x6 6

Inter-Lock switch is located.

Widen

Pf/kW

POWER OPER.

OFF STBY

OUTPUT

HI

LO

Pr/VD/ID/ALC

Pr

METER

ID

VD ALC

-34 -

ON AIR

FAN

ID

PROT

HF SOLID STATE LINEAR AMPLIFIER HL-2500FX

ANT

B

Widen

BAND

AUTO

A

MAN’L

10

7

3.5

1.8

14

18/21

24/28

50

13 Maintenance

13-B How to replace Fuses

Variety of fuses are built in the amplifier. Fuses are consumption item, and may melt to blow,

s time passes by even if there is no failure in the circuit.

a

Fuse Name

and Location

AC Fuse AC Primary

Line

PA DC Fuse

PA drain

DC Fuse Control circuit

DC Fuse Auxiliary DC P.S.

RF Input Prot. Fuse RF Input

ANT A ANT B

ALC ADJ ALC

Q’ty

Specs/Rating Problem when blown Possible Cause

2 250CF6.3x32 250V20A

(Fast attack)

3 #1197(Low Profile) Fuse,

58V20A

1 LM3.2 30V3.2A by Daito

Micro Fuse

1 LM3.2 30V3.2A Daito

Micro Fuse

1 LM1.6 30V1.6A by Daito

Micro Fuse

INPUT

SEND

Do not power on Over output

Power supply failure

“FAULT FUSE BLOW” Over current

PA Failure

Do not power on CONT terminal

short Control circuit

failure

No12V output (External tuner not work)

DC output terminal short

No RF output from amp Over drive

ELECT

S

TUNER

CONT

ERIAL

S

GND

USB

REMOTE

COUT

D

2V1A

1

FUSE

AC IN

AC Fuse

-35 -

13 Maintenance

13-C Fuse Location

DC Fuse (Control circuit DC

3.2A (Black) and12V DC P.S.

Drain Vdd P.S.

１

DC Fuse /PA FET Drain DC58V20A（Yellow) x3

T/R Relay Box

L.P.F.

Drain Vdd P.S.

2

RF Power Combiner

Control DC P.S.

Control Circuit Board

RF Power Splitter

PA

RF Input Prot Fuse

1.6A (Black)

-36 -

１4 Block Diagram and Explanation of Major Circuitry

14-A RF Amp

Driving RF signal transmitted from the transceiver is lead to the ATT/ Limitter board via T/R-Assy unit, where there is 3dB attenuator as well as RF limiter. These circuitry properly levels the magnitude of RF signal and also instantly shuts down the input to protect the amplifier.

There is a three port splitter located in this board that sprits a driving signal equally into three components, which are then fed to final PA module.

PA module consists of three sets of wide band class AB1 linear amp. using THP2933 FET’s in the push-pull form. 500W is achieved per one basic amp. board. Then the three outputs from the PA module is sent to the combiner unit, where three 500W components are combined to become 1,500W.

Operating status of three PA’s are strictly monitored in the combiner stage with regard to heat balancing of respective amps.

Finally 1,500W of RF output is lead to LPF (low pass filter) unit, where harmonics and spurious signals are reduced to FCC rules. Filtered output signal is sent to T/R ASSY unit again and is lead to antenna terminal by way of antenna relay.

-37 -

１4 Block Diagram and Explanation of Major Circuitry

14-B DC Power Supply

AC power is received at the IEC socket

ntake and passes the line filter. There are

i safety fuses on both lines. There are control power supply and FET drain power supply . Start up is usually made by turning on and off of control power supply. DC 12V, 24V and 100V are available when control power supply is turned on, and are always outputted once the POWER is turned on.

There are a magnet relay at primary side and DC ON/OFF function at secondary side. Depending on the operating condition, this power supply is turned on and off through the control circuit, and is provided in this power supply to meet IEC61000-3-2 harmonics regulation.

14-C Control Circuit

Control circuit performs various control using

icro-processor PIC18F8722 chip. Also, basic

m interface meet the necessary rules and conditions using the specialized semiconductor devices.

-38 -

Tokyo Hy Power Labs HL 2500FX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual