Michael Lawson wrote:

"starman" wrote in message

The size (gauge) of the wire is not important for a *reception*
antenna.
It does matter for a transmitting antenna. The typical inverted-L
has an
impedance of several hundred ohms for much of it's frequency range.
That's why a 9:1 (impedance) balun is often used. If the receiver
has an
antenna input impedance of about 50-ohms, a 9:1 balun will match it
to a
450-ohm antenna (9x50=450). The wire turns ratio for a 9:1 balun is
actually 3:1. My balun has a primary winding with 10-turns and a
secondary with 30-turns. I used #22 enameled wire on a 1/2" dia.
type-43
ferrite core. I plan to make a new balun using a 'binocular' core.
This
core shape makes the balun's impedance more consistent throughout
it's
frequency range.

Is there much of a difference in the gauge of the enameled
wire wound around the core?? I followed John Bryant's
lead in his article and used 30 gauge wire, but I was thinking
that 26 would be easier to handle.

--Mike L.

Use whatever size wire works best on the ferrite core you have.


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