> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of Joe Subich, W4TV
> Sent: Wednesday, June 28, 2006 1:02 PM
> To: 'R L Measures'; amps@contesting.com
> Subject: Re: [Amps] IM distortion and such
>
>
> Rich writes:
>
> > In my experience, VHF instability is independent of loading
> > since VHF never gets through a low pass Pi tank circuit.
>
> Another canard ... VHF doesn't need to get through the tank
> circuit. The damage is almost always at the input (tune padder
> and/or 10/15 meter coil contacts) that is the point that RF voltage
> is the highest. Remember the output tank transforms a High-Z tube
> to a low-Z antenna ... high-Z is high voltage/low current.
>
> 73,
>
> ... Joe, W4TV
Joe,
That is exactly Rich's point. The degree of loading has no effect on VHF
energy.
73
Gary K4FMX
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