Finished the end-fed antenna for the RV today. I ended up taking off about four feet of the wire so the antenna is about 26 feet long. SWR using my K1 with auto tuner is as follows:
40 meters = 1.3 to 1
30 meters = 1.1 to 1
20 meters = 1.0 to 1
15 meters = 1.0 to 1
Sent CQ on 7031 KHz and N9OL in Evansville, IN (386 miles to the SW) answered and we had a short QRP QSO. I was running 4 watts and John was running 5 watts. Things were fine till three other stations crowded in and I lost John in the ensuing chaos. My end-fed is mounted as a sloper and should have favored the NW…but our trips RV’ing this summer will tell more on this.
The antenna is short enough to fit in the foot print of my fifth-wheel RV. I use my awning as the tie-point for the UNUN and coax. If I don’t have the awning up, I can always just use a stake or short pole to hook the UNUN and coax to.
This antenna was the brain-storm of the fine folks at http://www.earchi.org and is their end fed 6 – 40 meter multiband HF antenna. I followed their article and ended up with a great antenna for my RV. Anyone who is space limited as far as antennas are concerned, ought to check out this antenna. They also tell how to make a “No tuner needed” 20 and 40 meter end-fed antennas. The 6 thru 40 meter antenna does require a tuner.