[Antennas] Faraday Loop construction question.

Mon Aug 20 18:04:59 EDT 2007

Hi Tarry and all,
As good as the web sight below is, it is only for receiving loops. What 
about transmitting small magnet tuned loops? Are there any books out 
that describes both the Faraday loop and the Gamma match so a person can 
build a loop and get it to work. Also, as good as some web sights are 
they are often quite short on detail when it comes to the coupling of 
the antenna to the radio. Even the Antennx loop books are short on 
detail when it comes to these two coupling method, I have both books. 
It would be fun to find a book out there that actually has in theory and 
practical use how to build a small magnetic tuned loop for transmitting, 
that is to say if one exists.
John Kinnunen
KB0ADD
Terry Conboy wrote:
> At 08:29 AM 2007年08月20日, Sam Morgan KA5OAI wrote:
>> The center conductor is connected to the outer shield of the left side 
> of the loop at the midpoint (at the point opposite the feedline).
>> The other end of the shield on the left side is connected only to the 
> outside of the shield of the feedline.
>> The center conductor inside the left side of the loop need not be 
> connected to anything (and could even be removed, so obviously, it is 
> cut).
>> The shield on the right side (at the midpoint) is open circuit (so it 
> is cut, too.)
>> The current from the center conductor of the feedline flows on the 
> outer part of the shield on the left side.
> The current from the inside of the shield of the feedline flows on the 
> outer part of the shield on the right side.
> This makes for a reasonably well balanced coupling loop.
>> BTW, the description of small loops as only responding to the magnetic 
> field is folklore. See 
> http://www.w8ji.com/magnetic_receiving_loops.htm for more accurate 
> info (although W8JI doesn't discuss the coupling loop itself).
>> 73, Terry N6RY
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