<div dir="ltr">I've successfully made cables for both a Baofeng UV-3R and UV-5R using a CP-2102 USB board. Total cash outlay for each, about $3.<div><br></div><div>Now I'm moving on to my real radio, an Icom IC-T90A. I found the following info:</div>
<div><br></div><div><a href="http://highfields-arc.co.uk/constructors/other/opc478.htm#usb">http://highfields-arc.co.uk/constructors/other/opc478.htm#usb</a><br></div><div><br></div><div>But it has not produced fruit with the Icom CS-T90A software. Specifically, it errors "Cannot access COM port." If I remove the cable / diode from the header and jump TX and RX pins together, the CS-T90A software responds differently, indicating "No answer from the transceiver." So, I know the software and the CP-2102 are talking. There's a note in the instructions above about connecting the CTS and RTS pins together... which I can't do on the 2102 board I have. The pins are on the IC of course, but not connected to anything on the board. The diode I used appears to be good and electrically, the cable seems sound. Any ideas?</div>
<div><br></div><div>BTW, I found a treasure trove of info on T90A programming, courtesy of Eric Behr at NIU. I plan do dig into the following when I have a little more time:</div><div><br></div><div><a href="http://www.math.niu.edu/~behr/Ham/Files/ic90memory.pdf">http://www.math.niu.edu/~behr/Ham/Files/ic90memory.pdf</a><br>
</div><div><br></div><div><a href="http://www.math.niu.edu/~behr/Ham/Files/Icom_T90A-Memory_Map.pdf">http://www.math.niu.edu/~behr/Ham/Files/Icom_T90A-Memory_Map.pdf</a><br></div><div><br></div><div>I would love to be able to easily port all the frequencies between my rig and my sons' rigs.</div>
<div><br></div><div>Chris, W1CAS</div></div>