[TenTec] OMNI-5 max voltage

[Roy]

About,

"He might put a filament transformer in series to the line to the primary of
the unregulated transformer to buck the output voltage down to a more
reasonable 13 volts.  If it was the typical Continuous Commercial Service
rated supply, he might then be able to trust it staying near a normal
voltage range for...(etc.)"

A 35-amp diode in series with the power cable to the rig would drop about 
0.8-volts and hold steady. Such diodes cost less than a buck. Would require 
a small heat sink.

73,   Roy    K6XK