<div dir="ltr"><div class="gmail_default" style="font-family:monospace,monospace">Thanks all. I just decided to buy one.</div><div class="gmail_default" style="font-family:monospace,monospace"><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><span style="font-family:'courier new',monospace">Dennis M. Wage (W9BOQ)</span><br></div><font face="courier new, monospace"><div><font face="courier new, monospace"><br></font></div>245 Corum Hill Road<br style="color:rgb(34,34,34);font-size:13px;background-color:rgb(255,255,255)"></font><div><font face="courier new, monospace">Castalian Springs, TN 37031<br></font><div><a value="+16153104242" style="font-family:'courier new',monospace;color:rgb(17,85,204)">(615) 310-4242</a><span style="font-family:'courier new',monospace"> Cell</span><br></div><div><font face="courier new, monospace"><a value="+16153529159" style="color:rgb(17,85,204);font-size:13px;background-color:rgb(255,255,255)">(615) 562-5128</a><span style="color:rgb(34,34,34);font-size:13px;background-color:rgb(255,255,255)"> Home</span><br style="color:rgb(34,34,34);font-size:13px;background-color:rgb(255,255,255)"><a href="http://hammondb3organ.net/" style="color:rgb(17,85,204);font-size:13px;background-color:rgb(255,255,255)" target="_blank">http://hammondb3organ.net</a><br></font></div><div><a href="http://overdubs.net" style="font-family:"courier new",monospace;color:rgb(17,85,204);font-size:13px" target="_blank">http://overdubs.net</a><br></div></div></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 4, 2019 at 7:18 AM Jim Unroe <<a href="mailto:rock.unroe@gmail.com">rock.unroe@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Sun, Nov 3, 2019 at 7:33 PM Dennis Wage <<a href="mailto:dwage@dwage.com" target="_blank">dwage@dwage.com</a>> wrote:<br>
><br>
><br>
> I am trying to make a home brew cable for chirp for the Yeasu ft2900.<br>
><br>
> I have an old prolific uv5r that's already been cut in half. Inside are a red, white and black wire.<br>
><br>
> If any one knows what the red, black and white wires in a prolific uv59 cable are for email me off list please.<br>
><br>
> The 2900 only needs data and ground, and I know which pins of the rj12 they go to.<br>
><br>
> Dennis M. Wage (W9BOQ)<br>
><br>
<br>
Hi Dennis,<br>
<br>
You probably won't need any of the existing wire. On many programming<br>
cables the USB end has a cover that can be easily separated and<br>
removed. That will give you access to 4 outputs of the USB UART.<br>
<br>
5V<br>
TxD<br>
RxD<br>
Gnd<br>
<br>
>From there you will have to build an small bit of circuitry that<br>
combines the 4 down to the 2 required for the radio.<br>
<br>
RX/TX<br>
Gnd<br>
<br>
After googling I see a circuit uses for (4) 2N7000 transistors and (4)<br>
4.7k resistors to do the job. There may be others.<br>
<br>
<a href="https://forums.qrz.com/index.php?threads/diy-make-your-own-programming-cable-ftdi-cable-for-1-50.502031/" rel="noreferrer" target="_blank">https://forums.qrz.com/index.php?threads/diy-make-your-own-programming-cable-ftdi-cable-for-1-50.502031/</a><br>
<br>
Good luck with the project and tell us how it works out.<br>
<br>
Jim KC9HI<br>
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