[Elecraft] K2 plus N1MM logger in CW

[Chester Alderman]

This is one of the very few times I have to disagree with Jim! N1MM and NL+
keys my K3 flawlessly up to about 95 wpm. Having been a QRQ operator,
running speeds up to 120 wpm, stuttering CW is something I just can't stand.
If one is using the Windows operating system, YOU MUST GO INTO THE OPERATING
SYSTEM AND TURN OFF WINDOWS GENERATED SOUNDS!! For about the 30th time, the
reason for that is because when Windows generates its internal sounds, the
CPU first SHUTS OFF THE I/O PORTS, generates the operating system sounds,
then turns the I/O ports ON again; and that is why Windows generated CW
'stutters'. Shut off the Windows sounds generation and the CW output will be
as clean and stutter free as any external purchased CW generator.

73,
Tom - W4BQF



-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jim
Brown
Sent: Tuesday, November 25, 2014 12:29 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K2 plus N1MM logger in CW

On Tue,11/25/2014 9:09 AM, Byron Servies wrote:
> My K2 sounds great to me, as the operator, when using a paddle. When 
> using a winkey it sounds awful. I would much rather have my logger 
> just send the message to the radio for it to send.

When your CW speed gets faster, you'll understand. The issue is how N1MM
sends CW on the serial port, which can get choppy when it is interrupted by
other software running on your computer. WinKey is a very good way to send
CW from a computer. It works quite well for me.

At low speeds, and under the "right" conditions on the computer, you can
send CW on the DTR pin of the serial port. It even works with USB to
RS232 adapters. You need a simple transistor inverter to convert the keying
signal to a short between the keying line and the chassis. 
Collector to keying line, emitter to chassis, DTR through 4.7K to the base.

73, Jim K9YC
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