I've had good luck with the end fed 40 M half wave, too. I use it with
the KX1 to do CWT's on bicycle tours (in warmer weather). While the
transformer and ATU apparently works, I wanted a really good match to
maximize output power, so I built a small QRP tuner for it:
http://sdellington.us/hr/EFHW_Tuner2.pdf
Most of the parts come from the Pacific Antenna BLT+ kit, which they
were willing to sell me without the case.
73,
Scott K9MA
On 12/28/2016 14:56, Fred Jensen wrote:
The Summits On The Air crowd, at least one of whom "runs" up
mountains, has had very good luck with end-fed half-waves. The
transformer weighs next to nothing, and the rest is just wire.
Requires no counterpoise, very ground insensitive since it's fed at a
voltage node. Also because of that, you need no coax, just an adapter
between rig and transformer. The higher you can get the middle
[current node] the better, but it will work very well with just about
any elevation on the far end.
For 40, it's about 67 ft of wire, and is a full-wave on 20 and will
work well there. My KX1, when I still had it, had no problem finding
a match. My HOA-Stealth here at home is an 80-10 EFHW strung about 6
ft high along the top of a wooden fence. Works surprisingly well.
Fred K6DGW
Sparks NV DM09dn
Washoe County
--Northern California Contest Club
--CU in the Cal QSO Party
--7-8 Oct 2017
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
--
Scott K9MA
[email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
