<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt;color:#000000;"><div>Is anyone else using a Quad Radio PCI Card with a pair of Icom IC-F221s configured as a repeater? <br><br>I've worked my way through the need for a COS pull-up resistor, but I can't seem to get the audio right. After setting proper deviation, I hear what sounds like a lot of computer-generated hash on the transmitter and a 'ghost' signal from a local commercial broadcast station in the background. I suspect that one of my problems is not using shielded cable from the Quad Card to the ICOMs. I could not find the appropriate shielded cable locally, so I had hoped to get by by sacrificing an old twisted-pair jumper. I crimped on a new RJ-45 with the following pin-outs: <br><br>ICOM Receiver Discriminator Audio (330 mVRMS @ 100 k ohms --> Pin 1Quad Radio RJ-45 <br><!--[if
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</xml><![endif]-->ICOM Tramsmitter (Radio Modulation IN) (330mV RMS) --> Pin 7 Quad Radio RJ-45
<p class="MsoNormal">ICOM PTT --> Pin 5 Quad Radio RJ-45 <br></p>
<p class="MsoNormal">ICOM COS (when radio is properly programmed and a pull-up resistor is used) --> Pin 2 Quad Radio RJ-45 <br></p>ICOM Ground --> Pin 8 RJ-45 <br><br>RX de-emphasis jumper is enabled and the best results seem to be obtained with TX pre-emphasis enabled (even though it is not recommended). <br><br>I will be ordering shielded cable for RJ-45s Monday, but is there anything else I have missed?<br><br>Thanks for any suggestions.<br><br>John / WB5NFC<br></div>
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