[CQ-Contest] Ic 706 Mark 11 and Writelog for NAQP CW
k7qq at netzero.net
Wed Aug 1 21:26:36 EDT 2007
I still have an old 486 with windows 3.1 and it does just fine with keying
NA and the LPT port.
I'm using for everyday and current use N1MM . a Compaq 3400+ AMD with 512
ram and strait out of Lpt with single transistor ckt that I can take out and
use on the old 486 box and can't hear any differance in the keyed CW,
however I am not an probably never will be one of the 50 WPMers.
----- Original Message -----
From: "Hal Kennedy" <halken at comcast.net>
To: "CQ-Contest" <cq-contest at contesting.com>
Sent: Wednesday, August 01, 2007 5:00 PM
Subject: [CQ-Contest] Ic 706 Mark 11 and Writelog for NAQP CW
> >Smooth CW is essentially impossible from software to I/O port due to the
>>CPU constantly interrupting the CW stream to service interrupt calls.
> This is folklore and simply incorrect. I'm with K7SV and the hundreds
> (thousands??) of us who key just fine under Windows with a 1 transistor
> level shifter.
> I've run Writelog, N1MM and WinTest on four different Windows desktops
> running everything from an original Pentium-75 with Windows 95 to a
> XP machine, as well as on four different notebooks - all with smooth
> up to 50 WPM out of LPT1 and out of COM1 (and I don't mean COM1 driving a
> data stream to an external keyer - I mean CW keying straight out of COM1).
> All that's needed is to turn off unnecessary software running in the
> background that is causing unnecessary interrupts.
> Hal - N4GG
> CQ-Contest mailing list
> CQ-Contest at contesting.com
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