[Milsurplus] mf antennas

[Rob Flory]

One of the great things about the old Navy transmitters is that they
already incorporate all the bottom loading coil you need right in the
transmitter.  The associated problem is the need to put the transmitter
very close to if not right at the feedpoint.

I agree with Dave that top loading coils won't take you far.

The down side of a quarter wavelength wire 50feet off the ground is that a
lot of the return current is through the lossy ground under the wire.  As
most of the military transmitters are made for electrically short antennas,
there is little point in achieving resonance in your antenna.  You'd be
better off with a 50 foot tall T with maybe 100 feet of top loading wire
and add the other 450 feet of wire to the ground system.

Another thing learned from both 160 meter experience and military radio
experience is that when you have limited wire, fewer short radials seems to
be more effective than more longer ones.

There is magic in LA on MF.

RF