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What gage wire should I be using?

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Art

Jan 1, 1970
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I'm trying to build a small 50 Ohm antenna with the following specs:
5 turns of wire with a 1.5cm diameter in a spiral coil,
Coil resistance should be .6 Ohms,
Inductance is .777uH.
How would I go about calculating the gage wire needed?
 
Art said:
I'm trying to build a small 50 Ohm antenna with the following specs:
5 turns of wire with a 1.5cm diameter in a spiral coil,
Coil resistance should be .6 Ohms,
Inductance is .777uH.
How would I go about calculating the gage wire needed?

Get the length of the wire 1.5 * pi * 5
and use a wire table to find a gage that
yields ~.6 ohms at that length. See
http://home.tampabay.rr.com/k4lk/info/wire.htm

The length of the wire will depend upon spacing
between the turns, which you did not specify.
You also did not specify frequency. Still, with
the numbers given, #39 AWG will give about .6 ohms.
I did not check my calcs against the .777uH figure.
 
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