Hi John wa0ptv, Received your message 100% this time. 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 IC27H 2MX TRANSCEIVER FOR USE WITH THE 9600 BAUD MODEM (FOR USE WITH UOSAT-3) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � MAIN UNIT SIDE � � � � � � 旼컴컴컴컴컴컴컴컴컴캑 � � � � 쳐컴컴컴컴커 � � � VCO UNIT � � � � x-----�---------�-- "x"= D4 1SV50. � 쳐컴컴컴컴켸 � Connect wire � � � direct to cathode � � � side of diode. � � � � � � � � � � � PLL UNIT � 읕컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴� 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. 73'S DAVID VK3YLV @ VK3JAV /UOSAT-3