In article
,
MojaveDxer wrote:

Well my Sony AN-LP1 gave up and quit on me. Any Welbrook loop is out
of the question since I still need to eat. What indoor setup have you
had the most success with ?

open loop ceiling antenna
closed loop ceiling antenna
Open or closed loop wall antenna
Slinky dipole
Slinky verticle
or the good old multi turn random longwire
Anything else ?

The reciever is a Icom R-75

73"s

Start with a closed loop. Chances are a vertical polarized will work
best but it depends on your local environment. Pick an outside wall of
the room you are in, a loop wall to wall and floor to ceiling will
probably 36 to 40 feet in circumference. Open the loop at the middle of
a vertical side and connect it to a piece of coax from the radio. The
coax shield is connected to one wire the coax center lead to the other
wire. If the signal to noise is good then stick with that. This will
provide plenty of signal to your radio.

If the signal to noise is not good then make a balanced shielded loop.
You make it the same way as above but with coax cable. Here you have
the opening on a vertical side as before and you run the coax in a loop
around the wall at the end of the coax where it meets the start of the
loop you tie the shield and signal wire of the cable end to the shield
of the coax at the beginning of the loop. Then on the opposite side of
the loop from the start (the middle of the other vertical side) you
split just the shield. This is a balanced shielded loop. The output
will be much lower than the wire loop but will probably have a better
signal to noise ratio. This loop will only be responsive to the
magnetic field and so the output will be lower but it is even less
sensitive to local noise fields.

This only takes some coax and wire to make so it's cheap. It is low
impedance so connect it to the radio's 50 ohm input.

--
Telamon
Ventura, California