[ICOM] Tone squelch operation, "uniformed" question

Dick Flanagan dick at k7vc.com
Tue Feb 14 03:35:33 EST 2012


Yes.  In my experience the two encoded tones will mix and you will hear 
the audio products (sum/difference) and the stronger of the four RF 
carriers will capture the others.  Depending on the tone filtering and 
other characteristics of the radios, the tonal grunge can be either 
minimal or overwhelming.  It is one of those things that just has to be 
tried as there are too many variables to give a definitive answer.

Is this just an academic question or are you actually trying to create a 
useful application?

Dick

--
Dick Flanagan K7VC
dick at k7vc.com


On 2/13/2012 11:25 PM, George J. Nixon Jr. wrote:
> Suppose that operators A and B have IC-W32a or equivalent ICOM VHF 
> capable radios, and are having a QSO with  normal settings on a VHF 
> simplex frequency.
> Suppose that operators C and D have similar rigs, get on the same VHF 
> simplex frequency, and set the same subaudible transmit and receive 
> tones.  When operators C and D start a QSO at the same time when A and 
> B are in their QSO, will they hear (be QRMd) by the QSO of C and D?  
> 73 - George, N9EJS
>


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