I live in a "sea" of electrical noise and need an antenna for the
SPR-4 for AM broadcasts. I tried to duplicate the loop that was made
for the SPR-4 using RG-6 and it simply did not work. The broadcasts
were weaker than the noise. Even using the loop (with my HF antenna
disconnected) the noise was stronger than the calibrator.
So I need to locate antenna outside the noise, which means I need to
use about 10 meters of coax. Due to availability and price, I've
decided to use RG-6 coax. I can run an antenna at about 6 feet above
ground level (in a valley) and a maxiumum of 11 meters long.
What should I use? A dipole? An end fed wire? If I use an end-fed wire
what do I ground? Should I make a 9:1 or other transformer? I have
several sizes of Russian made ferrite rods with a permeability spec of
400. I only have #24 stranded plastic insulated and 1mm solid plastic
insulated wire.
Should I connect the coax to the antenna input or the loop input?
The receiver is on the second floor. At the far end of the antenna is
an HF vertical that goes to the first floor, and there is a ground rod
there. If I do ground the coax or use a transformer, I can either run
an extra 10 meters or so and put it near the ground rod (and other
antenna), or put it closer and run a 10 meter 1mm solid wire to the
ground rod.
Thanks in advance for any advice.
73,
Geoff.
--
Geoffrey S. Mendelson, N3OWJ/4X1GM
Those who cannot remember the past are condemned to misquote it.
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