Re: [TenTec] Omni VI problems, need help

[Stuart Rohre <rohre@arlut.utexas.edu>]

Ken,
These are general comments.  Many transmitters have a diode bridge 
circuit to sense the level of RF for ALC circuits.
Many TT ALC type faults seem on this reflector, to be one of these 
diodes opening up. 

Leaving any rig connected to an antenna all the time invites wind static 
voltages, or storm surges taking out any diodes.  Thus, get the 
schematic, and trace the circuit and test the diodes for forward and 
reverse resistance.  Be alert to sneak paths and resistive loading 
effects of associated resistors.  One diode might open up and cause 
similar symptoms to what you have.
GL and 73,
Stuart
K5KVH


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