Here are the mods I made to my radio for use with 9600 baud modem. I hope
they make sence to you...
How to modify the ICOM IC-27H 2M transceiver for use with the
9600 baud modem (for use with uosat-3)
+---------------------------------------+
¦ MAIN UNIT SIDE ¦
¦ ¦
¦ ¦
¦ +--------------------¦
¦ ¦ ¦
¦ +----------+ ¦
¦ ¦ VCO UNIT ¦ ¦
¦ ¦ x-----¦---------¦-- "x"= D4 1SV50.
¦ +----------+ ¦ Connect wire
¦ ¦ ¦ direct to cathode
¦ ¦ ¦ side of diode.
¦ ¦ ¦
¦ ¦ ¦
¦ ¦ ¦
¦ ¦ PLL UNIT ¦
+---------------------------------------+
Front of the icom ic27h. viewed from bottom.
Bring a thin single core shield audio cable through the hole
on the rear of the set where the power cable comes out, there
was quite enough space on my radio. Feed this cable up the
side of the radio to the front panel and along to the PLL
UNIT where the other wires come in. Take the cable over to the VCO
UNIT enclosure, where there are 2 small holes. Pick the hole
closest to D4, solder the shield to the outside of the metal
case and feed the inner conductor through the hole and direct
solder to the cathode of D4 1SV50, keep the lead as short as
possible.
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