[CW] CW Bandwidth

[James M. Walker]

I experienced this phenomenon, once while trying to explain to digital only
types
at a design fest. They were using a radio remote control, over RS-232 to key
a
transmitter, which was being controlled. The baud rate was 9600 Baud to
control
the transmitter, and it worked great, until it got to the CW-over Remote
link portion
of the test, then  the display update info started falling off as the dial
was turned at the
remote while sending CW at 30 WPM at the same time.

Fact was the controller was getting the CW just fine at its input, but to
send the on-off signals at that speed, meant that those signals were taking
most of the 9600 baud
bandwidth, which meant the transmitter wasn't really responding to the
keying signals
as witnessed by the monitoring receiver! Sounded pretty weird also.

Jim
WB2FCN

----- Original Message -----
From: "Randy Goff" <kd8g at casinternet.net>
To: <cw at mailman.qth.net>
Sent: Monday, September 06, 2004 11:53 AM
Subject: [CW] CW Bandwidth


>
> Info about CW bandwidth has been in the ARRL Handbook for many years;
> and it does say bandwidth is proportional to speed.  Just refer to the
> handbook if anyone disagrees with you on this one DR.
>
> Randy Goff
> KD8G
>
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