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.
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