[Amps] Recommended Tuner for Clipperton L

qrv at kd4e.com qrv at kd4e.com
Sun Feb 2 14:11:27 EST 2014


Weird amps list error the first try - trying again ...

> Roger,
>
>      Would you please explain "hiss"?
>
>      What, precisely, is happening to create that sound?
>
>      There are so few parts involved it seems that there's
> either too small inductance (or perhaps the gauge of the coil
> wire is undersized), too little capacitance (or perhaps aging
> doorknob capacitors), or a tiny arc across an under-rated switch?
>
>      Could it be that a small tweak to one part of the mix of
> parts could compensate for the weakness elsewhere e.g. adding
> capacitance balances the added stress at 160m such that the
> marginal coil or switch is not pressed to the limit?
>
>      Trying to understand the "why" behind the symptoms ...
>
> Thanks!
>
> David
>
>> I've had no problems with the half sloper, center fed droopy dipole
>> on 160, or the Fan Dipole on 75.  The Dentrons and MFJ 989 series
>> would all "hiss" at me on 160 near the top end of the band at much
>> over 1 KW out.
>>
>> 73,
>>
>> Roger (K8RI)



-- 

David (NOT Dave) Colburn, KD4E - Nevils, Georgia USA

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