<div class="gmail_quote">On Mon, Oct 25, 2010 at 4:39 AM, <a href="mailto:fabio.grisafi@libero.it">fabio.grisafi@libero.it</a> <span dir="ltr"><<a href="mailto:fabio.grisafi@libero.it">fabio.grisafi@libero.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">I can use a Prolific USB/Serial adapter but the question is:
<p style="padding: 0px; margin: 0px;">Can I use a single Prolific (or different USB/Serial) adapter both to remote control</p>
<p style="padding: 0px; margin: 0px;">the radio AND to key the PTT ?</p>
<p style="padding: 0px; margin: 0px;"> </p>
<p style="padding: 0px; margin: 0px;">Or I have to use two adapters, ONE for PTT and the other for remote control ?</p></blockquote><div><br></div></div>With the Elecraft K3, you can use <i>one</i> serial port for both PTT and rig control. It should not matter if it is a real serial port or a USB-to-Serial adapter. But, the Prolific drivers have had a lot of bugs, so be sure to install the newest device driver from the Prolific web site, or use an FTDI USB-to-serial port device instead.<br>
<br>In Win-Test: type SETUP and press the Configure button for the radio's COM port (the virtual COM port). Set RTS (pin 7) to PTT, Active with: Radio 1 only. Set DTR (pin 4) to Always OFF.<br><br>See <a href="http://docs.win-test.com/wiki/Menu:Options#Serial_Ports">http://docs.win-test.com/wiki/Menu:Options#Serial_Ports</a><br>
<br>In the Elecraft K3 menu, set CONFIG: PTT-KEY to RTS-OFF <br><br>Note that the K3 will enter TEST mode (no RF output) if the PTT line is closed while editing the menu (or while powering up the radio, I think).<br><br>
73,<br>
Bob, N6TV<br>