[TenTec] Omni VI+ and Heil mics

[Stuart Rohre]

Rob, I think many of those who report hum problems need to look to their
grounding practices, since you demonstrate none of the problems.  There is
no great difference in the audio circuits of the models, as far as it has
been told here.
Many expect to run with Windom type, (unbalanced) antennas or even end fed
or random wires and then are surprised they have RF in the shack.  Most of
us have shacks too far from earth to have effective RF grounds to an earth
rod only.
73, Stuart K5KVH