[TenTec] On Noisy Transmitters

[Brian Carling]

That's normal for Icom. Actually a little clicking helps attract attention in contests.

Best regards - Bry Carling



> On Jul 6, 2014, at 6:10 PM, "Rick - DJ0IP / NJ0IP" <Rick at DJ0IP.de> wrote:
> 
> 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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