Re: Fwd: sending computer morse?
Posted by
Mike Markowski-2 on
Sep 27, 2012; 3:28pm
URL: http://elecraft.85.s1.nabble.com/sending-computer-morse-tp7563309p7563345.html
On the other hand, for any wanting to quickly or cheaply get on the air that way
it might be worth a try. I made a circuit similar to this one just now provided
by google:
http://i1-linux.softpedia-static.com/screenshots/Cwdaemon_2.jpg(PTT portion not needed.) I've had no linux timing issues when taking part in
contests. My top speed in contests is upper 20s to 30 wpm. Beyond that, my
ears can't distinguish much - sure wish they could - so can't speak to those speeds!
73,
Mike ab3ap
On 09/27/2012 09:48 AM, Don Wilhelm wrote:
> 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/elecraftHelp:
http://mailman.qth.net/mmfaq.htmPost: mailto:
[hidden email]
This list hosted by:
http://www.qsl.netPlease help support this email list:
http://www.qsl.net/donate.html