Agree - for contesting I've been using Win-test, keying it with RTS, even through a USB to serial adapter for the configured CAT com port.
Usually I key in 28-35 WPM, and with sound OFF on the computer, it works fine. Only rarely it messes up the timing of the CW code, but in practice it works like a charm. Done so on my K2, and lately setting the same up on my Kx3 /OZ2BRN - Brian Den 27-Sep-12 16:51, Tommy Alderman skrev: > Since you are talking about "operating systems" and since most ham software > is written for Windows, a much less expensive solution is to just turn off > Windows sound generation. When Windows generates sounds, the CPU first shuts > off the I/O ports, which causes CW stutter, generates the sounds and then > returns the I/O port to normal operation. Eliminating that sound generation > removes that 'stutter' generated by serial (or I/O ports) port. I have been > using audio generated CW driving a simple audio detector, to key my > transmitters for about 30 years and running in excess of 60 wpm, without any > serial port generated stutter. And it cost a LOT less than purchasing > outboard keyers! > > 73, > Tom - W4BQF > > > >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On >> Behalf Of Don Wilhelm >> Sent: Thursday, September 27, 2012 9:48 AM >> To: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] Fwd: sending computer morse? >> >> Keying via DTR or RTS will work with the simple transistor circuit, but >> it is subject to timing problems created by the operating system. There >> is no way for an application to directly control a port, so the >> application has to pass the request to the operating system and then the >> operating system will control the port when it deems appropriate. That >> may be OK at slow CW speeds, but the timing becomes more critical at >> higher speeds. Enter the WinKeyer to solve that problem. >> >> 73, >> Don W3FPR >> >> On 9/26/2012 4:26 PM, Matt Maguire wrote: >>> You can do it cheaper by building a simple transistor circuit that > allows you computer to >> key the radio via the computer's RS232 serial port. Not quite as good as a > Winkeyer, but >> gets you on air very quickly so you can have a play. >>> 73, Matt VK2ACL >>> >>> >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
