[Elecraft] Measuring power output of an SSB transmitter

[Paul G4LNA]

I quite agree with you Brian, I didn't think there was any other way of
monitoring SSB reliably. I've always used a scope way back when I used to
build AM transmitters and I have one permanently connected so I can keep an
eye on what's going on, meters tell lies I find.

73 Paul G4LNA.


Brian Lloyd-6 wrote:
> 
> There is no substitute for an oscilloscope. There are precious few  
> meters that will read true peak power. Also, no meter is going to show  
> you peak compression or outright flat-topping (clipping) like a 'scope.
> 
> Someone mentioned that their power output went down when they turned  
> the compression down and would Elecraft make power output remain  
> constant as compression is reduced. Well, the power output (average)  
> is *SUPPOSED* to decrease when you reduce compression. When speech  
> compression is reduced, your peak-to-average power ratio increases.  
> The peaks remain just as high but the average power is considerably  
> less. This is another reason to want a 'scope to check your rig.
> 
> BTW, how many people have done a two-tone test or a double trapezoid  
> test for linearity? How many people even know what I am talking  
> about? :-)
> 
> (My first HF transmitter was a Central Electronics Multi-Phase exciter  
> with a whopping 10W of output. When I got done making that work again  
> you can bet I understood single-sideband. :-)
> 
> Brian Lloyd
> Granite Bay Montessori School          9330 Sierra College Bl
> brian AT gbmontessori DOT com          Roseville, CA 95661
> +1.916.367.2131 (voice)                +1.791.912.8170 (fax)
> 
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> 
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