If the pre-amp point is readily accessible and in a not easy spot to get
consistent sunlight (e.g. dense forest), it sometimes makes more economic
sense to use dry cells and/or rechargeable batteries that can be swapped
out for recharging every few days.
P.S. I work in an industry that until very
Nermin wrote:
There was an article in recent issue of ARRL QST, A 20 and 40 meter
Vertical on Autopilot, ...
That article by K6MHE is available here:
http://k6mhe.com/files/DualBandVert.pdf
And here's a blog entry and a corresponding YouTube video by AB8XX for a
similar 80m/40m antenna:
