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Old December 10th 05, 04:18 AM posted to rec.radio.shortwave
Telamon
 
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Default In-Door Horizontal [Flat] Loop Antenna - - - No Grounding Required

In article .com,
"RHF" wrote:

M...,

My assumtions were that he said he was getting ready for a Table Top
Receiver; and that it would have both a LO-Z 50 Ohm {SO-239 Jack}
and HI-Z 500 Ohm {Pair of Terminals} as the External Antenna Inputs.

But in re-reading the original post; I see that it is a RadioShack
DX-394 which only has the one SO-239 Jack as it's External
Antenna Input.

My general preference with a Ceiling Loop Antenna is to use 300 Ohm
Twin Lead as the Feed-in-Line from the Wire Loop Element to the
Receiver's HI-Z 500 Ohm {Pair of Terminals} for the External Antenna
Input. The exception being if the Radio uses an 1/8" Mono-Jack as
the External Antenna Input. Then a short piece of simple Audio Coax
Cable with an 1/8" Mono-Plug can be the better choice for a
Feed-in-Line from the Loop Antenna to the Radio.

Note - Horizontal Wire Loop Antenna Element directly connected to a
Vertical Feed-in-Line.


You would be better off using 50 ohm coax for the loop antenna and also
the lead-in using the radios low Z input.

If you are in a low noise area then use an unbalanced coax loop for more
pickup. If local noise is a problem then use a voltage balanced loop.

--
Telamon
Ventura, California
 
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