Yaesu FC-40 Service manual

Interconnections to FT-897D and FT-857D

FC-40 Circuit Diagram

Automatic-Matching 200-Memory Antenna Tuner

After mounting, connect the cables from the FC-40 to the ANT and TUNER jacks on the rear panel of the FT-897D/-857D Transceiver.

ANT

Antenna Terminal

Coaxial Cable (5m)

FT-897D

Install supplied ferrite core as close to connector as possible.

HF/50 MHz ANT Jack

CAT/LINEAR Jack

Control Cable (5m)

GND

Wrap the ends of the water-

proof cap with supplied seal-

ing tape to protect against

moisture ingress.

ANT

Antenna Terminal

FC-40

Installation Instructions

Thank you for your purchase of the model FC-40 Automatic-Matching 200-Memory Antenna Tuner. The FC-40 microprocessor con-

trolled antenna impedance matching network is designed to provide wideband transmitting capability for many Vertex Standard / Yaesu

transceiversÚ, when used with an end-fed random wire or long whip antenna.

The FC-40 makes use of the control circuitry built into the transceiver, which allows the operator to control and monitor automatic

operation of the FC-40, which mounts near the antenna feedpoint. The FC-40 uses specially -selected, thermally-stable components, and

is housed in a waterproof case to withstand severe environmental conditions with high reliability.

A carefully-chosen combination of solid-state switching components and high-speed relays allows the FC-40 to match a wide variety of

antennas to within a 2:1 SWR on 1.6 - 54 MHz, typically in less than eight seconds. Transmitter power required for matching may be as

little as 4 - 60 Watts, and matching settings are automatically stored in memory for instant recall when the same frequency range is

selected later. The FC-40 is a current feed design and may not be able to match frequencies that are near 1/2 wavelength (or multiple) of

the antenna element.

Ú: Check with your Vertex Standard /Yaesu dealer for a list of current transceivers that may be used with the FC-40 Antenna Tuner.

Specifications

Operating Frequency Range: 1.6 - 54 MHz with 20+ m end-fed wire

7 - 54 MHz with YA-007 HF 2.5 m Mobile Whip Antenna

Input Impedance: 50 Ohms

Maximum Input Power: 100 W (3 minutes maximum continuous TX) Matched SWR: 2.0:1 or less (if antenna is not near a multiple of λ/2 )

Tune-up Power: 4 - 60 W

Tune-up Time: 8 seconds maximum

Impedance Matching Memories: 200 channels

Power supply: 13.8V DC±15% (supplied from transceiver)

Case Size (WHD): 9” x 7” x 2.1” (228 x 175 x 55 mm)

Weight: 2.6 lbs. (1.2kg)

Specifications subject to change without notice of obligation.

FT-857D

Install supplied ferrite core as close to connector as possible.

Coaxial Cable (5m)

HF/50 MHz ANT Jack

CAT/LINEAR Jack

Control Cable (5m)

GND

Wrap the ends of the water-

proof cap with supplied seal-

ing tape to protect against

moisture ingress.

Supplied Accessories

Control Cable 5m ................................................................. 1

Coaxial Cable (5D-2V) 5m ................................................... 1

Sealing Tape 50cm ................................................................ 1

Ferrite Core ............................................................................ 1

U-bolt Kit

• U-bolts ............................................................................. 2

• Plate ................................................................................. 2

• Washers (FW6) .......................................................... 4

• Spring washers (SW6) ............................................... 4

• Nuts (N6) ................................................................... 4

EAD77X101

Machine Screws, Nuts & Washers (set)

• Screws (5 x 20) ........................................................... 4

• Screws (M5 x 20) ....................................................... 4

• Outer washer (OW5) ................................................. 4

• Washers (FW5) .......................................................... 8

• Nuts (N5) ................................................................... 4

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 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

Mounting the FC-40

SELECT

Tuner Operation FT-857D/-897D Tuner Operation

The mounting method for the FC-40 is determined by the antenna type and station location. In all installations, however, the FC-40 must

be located at the intended feedpoint for the antenna. The drawings below show examples of placement of the FC-40 in typical mounting

locations. Following are several important considerations to bear in mind during installation:

 The side of the FC-40 with the cables extruding is oriented

downward (to minimize the chance of water leakage through

the cable holes).

 The grounding wire (for monopoles) and part(s) of the an-

tenna wire between the tuner terminals and the nearest an-

tenna support should be as short as possible.

 The antenna must not touch anything except supporting insu-

lators.

 If there is any chance of stress on the cables to the trans-

ceiver, they should be supported independently, with a slack

loop between their support and the FC-40.

For base stations, the FC-40 may be mounted either on a flat sur-

face such as the wooden board shown in Figure 1, or a 2.16” - 2.55”

(55-65 mm) mast, using the supplied U-bolt kit shown in Figure 2.

For mobile installations, the FC-40 should be bolted to a flat sur-

face using either bolts or self-tapping screws (Figure 3) inside the

trunk or cabin, as close to the base of the antenna as possible. Note

that it can be mounted horizontally if well protected from the weather.

After mounting the FC-40, connect the cables from the FC-40 to

the ANT and TUNER (or CAT/LINEAR) jacks (depends on the

transceiver) on the rear panel of the transceiver. Refer to the

transceiver’s Operating Manual for details of the interconnec-

tions with the transceiver. If you use the FC-40 with the Yaesu

FT-857D/-897D transceiver, refer to the instructions on the op-

posite page of this manual for interconnection details.

Screw (5x20)

Outer washer (OW5)

Screw (5x20)

Outer washer (OW5)

Washer (FW5)

Nut (N6)

Spring washers (SW6)

Washer (FW6)

Screw (M5x20)

Nut (N5)

Washer (FW5)

Outer washer (OW5)

Nut (N5)

Figure 3Figure 2Figure 1

GND Lug

Earth Ground

“L” Wire Monopole

Ground to Engine/Chassis

Ground to Engine Block/Keel

Ship MobileCar Mobile

Please see your transceiver’s Operating Manual for operation with the FC-40 Tuner.

See the instructions at the right side of this page for operation of the FC-40 with FT-857/-897 transceivers.

Microprocessor Resetting

By changing the configuration of an internal DIP switch, the microprocessor in the FC-40 may be reset. Do this in the event of erratic operation of the tuner, or to clear the tuner’s memories.

Clearing Memory

1. Turn “off” the transceiver.

2. Remove the 8 screws affixing the case of the FC-40, then

remove the case.

3. Turn the 4th switch of S1003 to “on”.

4. Turn on the transceiver.

5. D1002 will glow green briefly, then turn off. This con-

firms the resetting of the microprocessor.

6. Return the 4th switch of S1003 to “off” .

7. Turn “off” the transceiver again.

8. Replace the case, using the 8 screws removed in step (2)

above.

D1002

4th Switch

Cautions

 Please note the default positions of the internal DIP switch

components. All switches, except for the 4th switch of S1003,

are for factory setup use only, and they should not be touched.

If you accidentally set a switch to the wrong position, please

refer to the table below to correct the situation.

S1002

No. Switch

1 OFF

2 OFF

S1003

No. Switch No. Switch

1 OFF 5 ON

2 OFF 6 ON

3 OFF 7 OFF

4 OFF 8 OFF

 Only connect cables to the FC-40 after switching the trans-

ceiver off.

 If the FC-40 doesn’t tune even though you have pushed the

TUNER switch of the transceiver, it may be because the an-

tenna or its coaxial cable has a serious problem (very high or

low impedance due to “open” or “short”) or (the antenna ele-

ment is near 1/2 wavelength or multiple of the desired fre-

quency). Please check the antenna and coax if this happens.

 Take appropriate measures to ensure that there is no possibil-

ity that someone may come in contact with the antenna or

FC-40 ANT terminal while your station is transmitting. Ob-

serve all practical and regulatory requirements for protecting

yourself and the public from the effects of radio frequency

radiation from your antenna system.

1. Press and hold in the F (

FUNC

) key for one second to

activate the Menu mode.

2. Rotate the

call Menu Mode

to change the setting to “

MEM/VFO CH

No-001 No-001

No-001

No-001 No-001

(FT-857D:

[

EXT MENUEXT MENU

EXT MENU], then rotate the DIAL

EXT MENUEXT MENU

ONON

ON” to enable the extended Menu

ONON

) knob to re-

Mode.

3. Rotate the

call Menu Mode

ting for this Menu is “

setting to “

4. Press and hold in the F (

MEM/VFO CH

No-020 No-020

No-020

No-020 No-020

TUNERTUNER

TUNER.”

TUNERTUNER

(FT-857D:

[

CATCAT

LINLIN

CAT/

CATCAT

CAT.” Rotate the DIAL to change the

CATCAT

FUNC

TUNTUN

LIN/

TUN]. The default set-

LINLIN

TUNTUN

) key for one second to

) knob to re-

save the new setting and exit, then turn the transceiver off.

5. Set up the FC-40 and FT-897D/-857D per the illustration

on the opposite page of this manual, then turn on the transceiver’s power again. Do not set up the FC-40 and

FT-897D/-857D before changing the Menu Mode, item No-020 [CAT/LIN/TUN].

6. Press and hold in the F (

FUNC

) key for one second to

activate the Menu mode.

7. Rotate the

Menu Mode

this Menu is “

TUNERTUNER

“

TUNER.”

TUNERTUNER

8. Press and hold in the F (

MEM/VFO CH

No-085 No-085

No-085

No-085 No-085

OFFOFF

OFF.” Rotate the DIAL to change the setting to

OFFOFF

(FT-857D:

[

TUNERTUNER

TUNER/

TUNERTUNER

) knob to recall

ATASATAS

ATAS]. The default setting for

ATASATAS

FUNC

) key for one second to

save the new setting and exit.

9. Press the F (

tion Row “k”

10. Press the [A

ses” will appear on both sides of the “

FUNC

) key, as needed, to recall Multi Func-

[

TUNETUNE

DOWNDOWN

TUNE,

DOWN,

TUNETUNE

DOWNDOWN

](

TUNETUNE

TUNE) key to turn the FC-40 on. “Parenthe-

TUNETUNE

UPUP

UP].

UPUP

TUNETUNE

TUNE” indication, and

TUNETUNE

“TUNR” will appear on the LCD.

“TUNR”

FT-897D

“TUNR”

FT-857D

](

11. Press and hold in the [A

TUNETUNE

TUNE) key to initiate automatic

TUNETUNE

tuning. The FT-897D/-857D transmitter will be activated,

a carrier signal will be sent out, and the coils and capacitors in the FC-40 will be selected/adjusted for optimum SWR.

When tuning is complete, the transmission will cease, and

you will be ready for operation on this frequency.

Tuning data will be stored in the FC-40’s Memory

system. See the discussion below for details on how

this works.

If using the FC-40 with the FT-897D under internal

battery (FNB-78) power, the FC-40 may not operate

properly if the battery voltage is low.

MEM/VFO CH

BATT-A

BATT-B

SELECT

FUNC A DIAL

DIAL

FT-897D

FT-857D

IMPORTANT!

The FC-40, working in concert with the FT-897D/-857D trans-

ceiver, can store impedance matching data in its micro-computer

memory, so as to provide instant adjustment as you transmit in

different areas of a particular band. A total of 200 memories are

provided, with the capability to resolve new tuning data every 10 kHz. A few guidelines should be noted regarding the FC- 40’s memory system:

Tuning data is stored when you make an active effort to store it

](

by pressing and holding in the [A

Although the tuner will automatically activate itself if it encoun-

ters more than 2:1 SWR, this memory will not be stored unless

](

you have pressed the [A

TUNETUNE

TUNE) key for one second. This al-

TUNETUNE

lows you to store your favorite operating frequency areas into

tuner memory without tying up memory space with matching

data on seldom-used frequencies.

If the FC-40 cannot resolve a satisfactory match because the

SWR is above 2:1), the tuning process will stop, and no memory

data will be stored. However, you may wish to move frequency

a few kHz, then press the [A

as slight changes in the reactance may allow a match to be ob-

tained. Then go back to the original frequency and try again.

If the impedance encountered by the FC-40 exceeds 2:1, and

the “HSWR” icon is illuminated, the microprocessor will not retain the tuning data for that frequency, as the FC-40 presumes

that you will want to adjust or repair your antenna system so as

to correct the high SWR condition.

TUNETUNE

TUNE) key for one second.

TUNETUNE

](

TUNETUNE

TUNE) key again for one second,

TUNETUNE