[Test-Equipment] AN/PRM-10 Question

[k2cby]

It has been my experience that  wide range RF oscillators (i.e., Grid Dip
Oscillators and Signal Generators)  that use 

large value variable capacitors tend to poop out at the low end where the
capacitive reactance is lowest and the 

feedback demand is highest.

 

The cure is usually a friskier oscillator tube.

 

As a first step, be sure the oscillator has the proper B+ voltage.

 

After that, you might want to check component values of the feedback
network.

 

 

Miles B. Anderson, K2CBY
16 Round Pond Lane
Sag Harbor, NY 11963
Tel.: (631) 725-4400

Fax.: (631) 725-2223
e-mail: k2cby at optonline.net