[AMRadio] Re: use of scope to monitor output audio


ne1s ne1s at neandertech.com
Wed Mar 22 12:59:44 EST 2006


I think it will only make a difference on those rigs (riceboxes) that have 
SWR protection, which will limit (clip) the peak output power when operating 
into a high SWR. 

 -Larry/NE1S 

Brett gazdzinski writes: 

> I have never noticed any difference in the sound, what gets
> to the other end will be lower in signal strength with some setups,
> not much difference with other setups like open wire feeders. 
> 
> Any watt meter will not be accurate I would think. 
> 
> Brett
> N2DTS   
> 
>> -----Original Message-----
>> From: amradio-bounces at mailman.qth.net 
>> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of 
>> abeck at xplornet.com
>> Sent: Wednesday, March 22, 2006 7:12 AM
>> To: AMRadio at mailman.qth.net
>> Subject: [AMRadio] use of scope to monitor output audio 
>> 
>> How does a high vswr affect the modulated envelope on an AM TX? 
>> 
>> I would expect a decrease of forward power to decrease the 
>> envelope and 
>> distort the signal somehow. Perhaps suppressing the audio? 
>> 
>> Alan 
>> 
>> 
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> 
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