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[AMPS] Capacitors & Resonance

To: <amps@contesting.com>
Subject: [AMPS] Capacitors & Resonance
From: measures@vcnet.com (measures)
Date: Thu, 4 Nov 1999 09:06:51 -0700
>>
>> A capacitor that is resonant at 50MHz looks like an inductance at 150MHz.
>>  A better bypass for 150MHz might be 200 pF.
>
>It would seem logical Rich. But what happens is that the anode then becomes
>unloaded at low frequencies, where the gain is often higher. The amplifier
>takes off at low VHF or worse sets up a resonance with the RF choke.
>
I built a 1kW 2m tetrode SSB amplifier.  I did not use a 1000pF anode 
supply bypass.  The amplifier seemingly worked ok.  

cheers

-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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