[600MRG] MF kenwood sensitivity question on QRP-L

[John Langridge]

Thanks Ken.  I will hang loose for a bit to see if there are other comments on this before passing the info on to him.  I don't mind doing a little legwork on this to help a potential suitor for what we do.

73 and thanks again!

John XIQ



________________________________
 From: "kgordon2006 at frontier.com" <kgordon2006 at frontier.com>
To: "600mrg at w7ekb.com" <600mrg at w7ekb.com> 
Sent: Thursday, October 30, 2014 11:00 AM
Subject: Re: [600MRG] MF kenwood sensitivity question on QRP-L
 

On 30 Oct 2014 at 8:38, John Langridge wrote:

> the following was posted on QRP-L... anyone know the answer? guessing
> its just a matter of getting that attenuator out of line. 

Yes. I have two TS-940s. The TS-940 has a 20 dB attenuator which is switched in when 
the tuning goes below 1500 Khz. There is at least one fairly common mod to bypass 
that attenuator.

It is my understanding that many (most?) modern transceivers include such an 
attenuator to help prevent overload by local BC stations when tuning in that range.

I know that when I have used a TS-940 to listen below 1500 Khz, it is very obvious when 
that attenuator in active.

I wouldn't doubt that the TS-140 also has the same "feature".

I thnk that mods.dk MAY have the necessary information on how to defeat this 
"feature". In any case, judicious searching on the internet will eventually find it.

Ken W7EKB




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