[ARC5] The TN-6 MF Loading Coil
David Stinson
arc5 at ix.netcom.com
Fri Mar 15 09:22:44 EDT 2013
Concerning the TN-6 antenna loading coil:
The ARC-5 manual instructs that the TN-6 should be inserted
between the MF transmitter and the RE-2 antenna relay.
This, of course, leaves it out of the circuit when one of
the HF transmitters is selected.
However- since the RE-2 would be feeding a very
electrically-short antenna at MF, the TN-6 loading coil
would place a very high-voltage node at the antenna switch.
Using a 50-foot wire as a trial antenna,
I can easily light a nearby 6-foot fluorescent tube.
While the RE-2 is robust, I think this would be hard on it.
And if the ground bonding wasn't perfect,
all kinds of nasty things could happen, including across
any Hi-Z bonds in the aircraft body anywhere close by.
The A.R.C. engineers were no dummies.
Likely I, rather than they, am missing something.
Any insight?
73 DE Dave AB5S
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