[AMPS] Re: Q RF chokes

[km1h@juno.com]

On Mon, 2 Nov 1998 11:35:22 -0000  Peter Chadwick
<Peter_Chadwick@mitel.com> writes:
>
>Theoretically, if the impedance of the winding is high enough, there 
>won't
>be enough RF current to cause saturation. But this also needs some 
>care so
>that there isn't DC saturation - which suggests NOT using toroids.


B&W sold ferrite core RF chokes for many years to commercial builders.
They had the  BBC-2.5K and the BBC-5K.  They were 2.5KW and 5KW AM rated
respectively and the  BroadBandChoke was rated 2-30MHz continuous.
While a B&W distributor I sold about 20 of the BBC-5K into the ham
market. 
Unfortunately B&W is no longer in that market by I do have a 5K here that
I took apart with intentions of copying. At only 4" high it could be
adapted to several amps that have 12M or similar  problems.

73  Carl  KM1H



>However, experience has shown it isn't 'falling off a log' easy, and 
>may not
>be as cheap as a conventional approach.
>
>As far as the 'coax' feed is concerned (the Hughes equipment), that 
>sounds
>very interesting. Very cunning!
>
>73
>
>Peter G3RZP
>
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>

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