[AMPS] Re:

measures 2@vc.net
Wed, 1 Mar 2000 09:03:27 -0700


>
>Hi Jon and all,
>
>I have had acceptable results with Nichrome wire as the resistive 
>part of parasitic suppressors in FM broadcast transmitters using the 
>4CX3500A up to about 5500 watts CW. Probably hundreds of these units 
>are around the world with this circuit in them. Also used the wire in 
>the prototype of my 100 kW x 2 amplifier at 2800 KHz which I built 
>two years ago. However, in that unit, I finalized the prototype 
>around small Carborundum type resistors because they were easy to 
>mount, and well, they worked too. I also find a bit of ferrite is 
>helpful in some magic absorbers. I do not built these things from 
>paper models and equivalent circuits, but with a network analyzer 
>sweeping a cold amplifier circuit. Right now I have no suppressors in 
>the big amp.
>
What is the grid-resonant freq.?  

What is the anode-resonant freq.?
>
cheers, John

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