[Elecraft] EFHW

[Don Wilhelm]

Brian,

If your end fed antenna is actually a halfwave (which is what EFHW 
means), the answer is no.

The solution for portable work is to use a length that is not a halfwave 
- 58 feet is known to work well for 40 thru 10 meters when used with a 
13 foot counterpoise.  Double the lengths if you want 80 meters.

With that antenna and counterpoise length, dispense with the balun for 
portable operations, and use a BNC to Binding post adapter instead (no 
coax).

If you need to use a short length of coax, you can put the balun at the 
end of the coax, and you can try both the 1:1 and 4:1 positions to see 
which provides the better match.

73,
Don W3FPR


On 2/10/2017 10:36 AM, Brian Pietrzyk wrote:
> Speaking of baluns or un-un's... I'm about to assemble a BL2 which is a 4:1. Will that be enough to bring an End Fed Half Wave (EFHW) within tuning range of my KX3 ATU?
>
> I'm going to be ve3bwp/hi9 QRP week after next and hoping to try a couple of different length end feds into one of the trees near the beach. I'll be trying Phone and psk31/JT65/CW an afternoon or two that week. Anyone interested in a sked email me direct.
>