[TenTec] On Noisy Transmitters

[Rick - DJ0IP / NJ0IP]

True, but for the OM7, you can adjust the rise time and obtain some really
wonderful keying.

73 - Rick, DJ0IP
(Nr. Frankfurt am Main)


-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Jim Brown
Sent: Sunday, July 06, 2014 10:47 PM
To: tentec at contesting.com
Subject: Re: [TenTec] On Noisy Transmitters

On 7/6/2014 1:33 PM, Jim Brown wrote:
> Clicks are generated by rise times that are too fast combined with 
> intermod distortion.

Another point I forgot to make in this post is that many modern rigs allow
the user to adjust the keying rise time via a menu setting. In on the air
tests of an IC7600, clicks went from moderate to awful as the rise time was
adjusted from slow to fast, and the default setting was closer to awful than
moderate. You can see these measurements in

http://audiosystemsgroup.com/K6XXAmpTalk.pdf

73, Jim K9YC
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