From      : ve1hd
To        : g6zru
Title     : 9600.hlp
Keywords  : your request
Uploader  : VE1HD 
Uploaded  : Tue Jul 14 15:27:29 1992
__________________________
   Hi there Fred, the handle here is Clarence and the QTH is near Sydney
Nova Scotia. I saw your request for help with 9600 baud on the FT-726, that
is what I use here with a PacComm external 9600 baud modem and it works well
or at least I think it does. I have only been on the high speed bird for 
about a week now. The following info was sent to me some time ago by one
of the chaps stateside and it seems he obtained it from one of the chaps in
JA land. I did the mod exactly as it is described, the only thing extra I
did was to add a small relay to automatically switch to between Satellite
and Simplex, I key the relay from the 8v line that gets switched by the
satellite switch when you select either of the satellite modes. I picked up
this voltage on Pin 6 of plug J05 on the satellite board. I used a small
5v SPDT, TTL compatible relay with a 47 ohm resistor in series with the 
coil and it works fine. The TX audio is wired to the common, the TX module
modulator to the normally closed and the Sat module modulator to the normally
open and it works fine. I used small sheilded wire and mounted the relay
with a small piece of double sided tape.
  The following is the info on where to pick up the RX and TX audio in the 
radio.

The following was received from JA6FTL, I have not yet got
around to doing it.
========================================================================

Hello Tom,

 My mods to FT-726 is as follow.

1. RX data connection
 RX signal is drawed from the junction R44-DO4(1S188) with 10K ohm resistor.
 It must be connected to RX in of G3RUH modem

2. TX data injection
 You must inject both TX unit and Satellite unit if you need full duplex
 operation ( example for uosat4/5 ).
 The TX data injection point is  DO5(FC-53)-C27 in TX unit and
 DO6(Fc-53)-C25 in SAT unit. You may be able to direct connect from
 TXD out of G3RUH modem as DC decoupling is in the modem board.

3. You need selection SW for TXD injection to select sinplex/full duplex
 operation.

73s.   sueo  @ uo-14, ao-16, lo-19, FO-20

=========================================================================
73 Tom K8TL

  That was the info received from Tom K8TL. Hope it works for you and 
all the best from Clarence ... VE1HD -=>