[Elecraft] KX3 Field Ant. for 80/40/30

[Lynn W. Taylor, WB6UUT]

If the wire is near an even multiple of 1/4 wave (1/2 wave, one full 
wave, 1 1/2 wave, etc.) then the impedance at the end of the wire is 
going to be very high.

If the wire is near an odd multiple of 1/4 wave (1/4 wave, 3/4 wave, 1 
1/4 wave) then the impedance will be low.

If you're expecting a high impedance and you have a 3/4 wave wire, you 
may have trouble getting a match with a 9:1 balun.

That's oversimplified, of course.

The reason "pseudo-random" antennas around 53' are popular is that 
length isn't resonant on any popular ham band, and you can start making 
assumptions about how it'll work.

73 -- Lynn

On 11/19/2017 12:22 AM, Erik Basilier wrote:
> End-fed antennas have gotten popular lately. When I look closer I see two
> different popular approaches.