[Amps] crossmodulation in PA

Peter Chadwick g3rzp at g3rzp.wanadoo.co.uk
Fri Sep 7 12:20:43 EDT 2007


I had the direction indicator pot in the T2X burn up with RF  when using the tower as a vertical. The RF current  through the rotator to the capacity hat of the 205BA appeared to cause the problem: adding suitable straps between the top of the tower and the stub mast, as well bypass  caps in the T2X,  led to no recurrence in 20 years.
But this purely anecdotal, of course. I believe it's backed by theory - others may disagree.

73
Peter G3RZP


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