KB2LJJ Radio Mods Database and Manuals
YAESU FT-76
Expd. RF
1- REMOVE BATTERY AND ANTENNA
2- REMOVE THE 4 SCREWS HOLDING BATTERY TRACK.
3- REMOVE 2 SCREWS IN THE BACK CASE.
4- CAREFULLY SEPARATE THE FRONT COVER.
5- LOCATE rd)AND REMOVE SOLDER ON JUMPER PAD 4 AND 7 (on the control board )
6- SOLDER JUMP PADS 1, 3, 5, 8, 9, and 10 ( Hold mod had pad 4 in place of 5 )
7- REASSEMBLE THE RADIO.
8- TURN THE RADIO ON IN EACH CHANNEL ( Indicator will blink )
9- ENTER THE FOLOWING FREQ. (Use the [F] and UP arrow keys.
CH. 1 400.000 Press [D/MR] Lower Rx
2 485.000 Press [D/MR] Upper Rx
3 415.000 Press [D/MR] Lower Tx
4 470.000 Press [D/MR] Upper Tx
RESET Commands:
Soft Reset Press and hold [T] and [REV] and turn power ON.
Master Reset Press and hold [D/MR] and [T] and [REV] and turn
power ON. ( Then enter the band limits above ).
FT-76 and FT-27 Expanded frequency range
Remove the screws holding battery track and rear cover.
Locate the "CONTROL UNIT".
Close jumpers 1, 3, 7, AND 8.
Reassemble the radio.
Turn on the radio and program it as following:
"1" 135.000 PRESS D/MR THIS IS LOWER RX LIMIT
"2" 185.000 PRESS D/MR THIS IS UPPER RX LIMIT
"3" 135.000 PRESS D/MR THIS IS LOWER TX LIMIT
"4" 185.000 PRESS D/MR THIS IS UPPER TX LIMIT
Press and hold D/MR, T and REV while TURNING ON if you need to reset or reprogram the radio.
FT-76 expanded frequency range:
Same as above.
Close jupers 1, 3, 4, 7 AND 8.
Program 420 to 460 mhz as above.
Notes:
Jumper 5 is for 25 KHZ steps default value.
Jumper 9 is for battery back-up.
Jumper 10 is for 1750 HZ repeater tone access.
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KB2LJJ Radio Mods Database and Manuals
FT-76 9600 Baud
DJ5ER @ DB0CL - FT-76 fuer 9600 Baud - Vorschlag!
Hello FT-76 owners with an interest in 9600 baud!
In my neighborhood have already been several amateurs the standard C-500 for use with PR-9600 baud
converted.
Since I have been a short time the YAESU FT-76 and have yet to see any immediate need to 9600 baud
switch, I have once the schematic diagram and accurately studied with the standard C-500 compared.
RX-part (NF for 9600 baud modem)
In the 2nd ZF is a filter used CFWW 455E. This filter is for 9600 baud operation broad enough.
The NF G3RUH for the modem (or compatible) can be found in the IF unit, plug in the bar J3001 / P1090708 Point
10th
This is the circuit diagram with TSQ means.
TSQ is the name in the circuit several times to find. Maybe design is another point (TSQ)
better to reach. (Because only here a wire must be parallel angeloetet.)
Despite the deep pass upstream (R3016/C3019 - 15K/0.01uf) should be linked to the NF TSQ for the necessary
Be usable frequency range.
(C3019 otherwise reduce or desoldering.)
TX-part:
The VCO in the FT-76 is very similar to the stage in the C-500 built. That is when the FT-76 on the Q6002 PLL UNIT
(see
Diagram).
On platinum plugs
J6001 / P0090675 is at the point 1, the modulation voltage fed.
Point 1 is described by MOD.
Here, the NF-9600 baud for holding.
When inserting the plug, the incoming leadership of Mikrofonverstaerker / Hubbegenzer necessarily
Remember it is Illegal to transmit out of band. This Modification is for Informational purposes ONLY.
Doing such modifications on your radio may void any warranty and damage your equipment.
All mods found on this database are offered to me by other amateur radio hams or captured by Packet system.
KB2LJJ take no responsibility or liability for any damage done resulting from any modification.
ATTENTION
The KB2LJJ takes no responsibility for any damage during the modification or for any wrong information made on this modification.
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