SV: [AMPS] G2DAF Circuit

[measures]

>
>> Rich said:
>> 
>> "To avoid choke fires, keep all resonances at least 6% from amateur bands.
>>  Choke resonances should be checked with the hv rf choke wired into the
>> circuit and not shorted."
>
>Colin said: 
>> This is an example of bad information.  The question was about series and
>> parallel resonances.  As has been pointed out in other posts, parallel
>> resonaces are not bad at all.  In fact, it is desired.  A parallel
>> resonance will not result in a choke fire.
>
>Series resonances can only be found by shorting the choke from 
>end to end and using a dip meter, or measuring the impedance 
>with the choke open but only the bottom connected.
>
 Adding a humungous shorting strap appears to shift resonances.  

>In all cases the choke should be in the final location.
>
good advice

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


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