GB> Directional Slinky Antenna

[Brian Carling]

Bob Roehrig wrote:

>
> Reminds me of back in the late '60's when we were getting ready to put 
> a 2 meter repeater on the air. I decided we wanted a bit of power so I 
> built a single 4CX250B amp per a QST article. Used "lines" for the 
> plate tank - actually 2 pieces of copper tubing. Efficiency was a bit 
> over 55%. Later I took out the tank and had it silver plated - no 
> difference in efficiency!
>
He he - yes, the old School of  Empirical Electronics strikes again!!

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