It is often mentioned that "very high RF voltages" are present at ends of dipoles, voltage nodes on loops, etc. but I haven't been able to find any guidance in the form of numbers. How high is "very
I used to have a 130 foot end fed wire. At 1.5 kW, it had over 2,000 VRMS on 80 meters. I used a fixed 120 pF vacuum capacitor and a 6 inch diameter coil as a matching network. If you use a big 240VA
It is often mentioned that "very high RF voltages" are present at ends of dipoles, voltage nodes on loops, etc. but I haven't been able to find any guidance in the form of numbers. How high is "very
Thanks for the insight. I will try the EZNEC suggestion. "stub" was a bad choice of words, I've got two approaches in contemplation/analysis mode, both wire loading schemes: 1. Four relay switched ve
with the antenna. An MFJ screwdriver controller provides 10 preset turns counts, established at 20KHz steps by manually measuring swr. I use the MFJ controller on my Tornado variable inductor tuned
I worked with Mike Kelley ( mpkelley at seco-systems.net) (be aware there is another unrelated seco systems company). We worked out the design of a dual coil (1/4" Cu tubing coils) center feed with a
1. Four relay switched vertical wires at the center bottom voltage node. The antenna has about a 25 KHz 2:1 bandwidth so a "binary" ladder of 4 wires can cover the whole band if the natural loop is r