I built an 80 meter loaded sloper. And yes, my XYL climbed the tower and attached the end almost at the top! What an amazing woman she is! It was fun and easy to set up/adjust (after the initial tower climb that is) due to the fact it is all raised/lowered with pulleys. I got the coil information from the K7MEM site.
Results? After some tweaking (ie. shortening) I was able to get a 1:1 SWR on 3.666 Mhz with about 120 Khz 2:1 bandwidth. Pretty darned impressive. When I switch between the tuned up G5RV and the new sloper there is about 4 S-units of signal difference… wow! They should be able to hear me now on the Tuesday night SPARC 80 meter net 😉
I did try a brief test on the 3.755 Mhz net with excellent results. Echo Bay, ON (Sault Ste. Marie)(450km) – 7 to 9 S-units, Brockville, ON (580km) – 10 to 15 S-units. I could barely hear either station on the G5RV Jr. (to be fair, it’s designed to only go to 40 meters).
Now to try a loaded 160 meter sloper….. 🙂