[Repeater-Builder] Power Supply Question

[Michael Ryan]

 

 

  In the building and testing phase of a system, two power supplies are
being used. One for the power amp and one for the repeater/exciter, fan,
controller, etc.  It appears that a ground loop may be emerging as the
culprit in why some sort of oscillation or cycling of the repeater goes on,
after the machine is keyed up but before the repeater drops off the air.  Is
this typical and a sign that only ONE power supply be used for the whole
system?   Thanks in advance for your input.  - Mike