[AMPS] Re: 6m amp blocking caps

[2]

>
>> >>
>> >//   Why not?   Is the sharp dip I see on the dipmeter a pseudo-dip?
>> >
>> Certainly it's real. When you connect the two capacitors together at
>> each end, you make a series-resonant loop. Guessing at values, two
>> 1000pF caps, in series with a total of 8nH lead inductance + self
>> inductance, comes out at 80MHz.
>> 
>> But dipping the two capacitors on their own tells you *nothing* about
>> their behavior in-circuit.
>
>I see the same old "grid dip meter tells all" argument is going on!
>
>Good luck Ian! 
>
>Actually you can't tell a thing about whether it is a "good desirable 
>dip" , something meaningless, or a potential problem with a grid dip 
>meter. If you reconfigure the circuit in an attempt to find out what 
>type of resonance you are dealing with, you almost always change 
>the resonant frequency so much you can't tell where the hell the 
>original resonance moved to.
>
>There are many much better devices, like cheap common antenna 
>analyzers especially when used with small diodes or other RF 
>detectors. They are much more likely to tell you if the resonance is 
>a potential problem.
>
//  Didn't Tom say that the dipper option for the MFJ antenna analyzer is 
disfunctional?

-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


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