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Re: First SAt QSO

Sebastian wrote:

> I don't know the history of SO-50, but my guess is that it was decided  
> to use a PL tone, because of QRM from non-licensed hams using high  
> powered 'cordless phones' sold in some countries, and perhaps some  

Is that why I've sometimes heard DTMF and ringing tones on AO-51?  I 
just put it down to general repeater abuse idiocy...

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