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[AMPS] Re: Staggered resonance effect in VHF suppressors

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Subject: [AMPS] Re: Staggered resonance effect in VHF suppressors
From: measures@vc.net (Rich Measures)
Date: Tue, 16 Jun 98 02:50:22 -0800
>
>Rich says:
>
>>When the ohms of the VHF suppressor R is about the same number of ohms >of
>>reactance that which the suppressor inductor exhibits at the anode's VHF 
>>resonance, the desired stagger-tuning effect of the VHF suppressor is 
>>optimal.  .  
>
>Can you explain why?
>Peter G3RZP
>
If the VHF current path through Lsup encounters a different anount of 
inductance than the VHF current through the through Rsup path encounters  
 (and the magnetic fields from the two current paths are not coupled)  
two anode-circuit resonances are created.  The effect is like tuning an 
IF transformer for wider bandwidth -- i.e., the primary of the IF 
transformer is tuned to a different frequency than the secondary is tuned 
to.  The result is increased bandwidth/lower-Q.  
-  later, Peter.  


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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