[Amps] Grounded Screen 4CX1500B

[Jim Tonne]

Conrad:

Regarding a resistor in the PA cabinet, absorbing harmonic
energy:  it is not anedotal!  Quite true, being used at
Continental Electronics.

But the position is important and has to be done by cut and
try methods.  This technique was used for both stabilization
and for VHF/UHF harmonic control.

- Jim Tonne   ex-Continental guy now enjoying retirement

> Shawn I operated the 2m amp for several years on eme. There was a problem
> with the 3rd harmonic which appeared to be a result of cavity resonances 
> in
> the output compartment. I cured it with a 100 ohm large carbon resistor
> placed on one wall of the cavity, grounded at one end.