[Elecraft] how to optimize end-fed?

Lynn W. Taylor, WB6UUT KX3 at ColdRocksHotBrooms.com
Sat Oct 1 14:20:31 EDT 2016


I think what the original question is missing is the fact that we are 
talking about the whole system, not just the inductor or the ATU.

The system is the final amplifier, the ATU, the feedline, the UNUN and 
the antenna.

If minimizing the loss in the ATU increases the loss elsewhere, then we 
aren't optimizing the whole system, probably the opposite.

 From the subject, it's "how to optimize end-fed?" and without any other 
constraints.

On 2 meters, I've used a lot of J antennas, and found them to be pretty 
awesome performers.  It's an end-fed half-wave, with a quarter wave 
matching section.

Build one out of wire for an HF band, and the same antenna is called a Zep.

Properly trimmed, you don't need a tuner, but they're single-band.

73 -- Lynn

On 10/1/2016 10:03 AM, Logan Zintsmaster wrote:
> To add to Lynn's comments, setting the balun tap to the lowest SWR means you
> are minimizing the work that the
> tuner has to do and as a result probably minimizing it's losses, as well.



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