The QRPer Board

After this post on qrper.com https://qrper.com/2024/09/jeffs-backcountry-pota-adventure-campbell-brown-ecological-reserve-activation/ looking at the contacts map and the bands used I started thinking and, to verify that my thoughts were correct I then fired up the free 4NEC2 modeler https://www.qsl....

you could cut an EFHW, add some wire with a spade connector to make it an EFRW and carry two transformers, a 9:1 and a 49:1 I'd maybe have a disconnect in the EFHW wire at an EFRW-friendly length - 35.5 or 29 feet. That's another way to do it, you start with a length of wire matching a "good l...

I would want to carry two different types of antennas, if possible. One, a wire antenna, either an EFHW (without a tuner) or an EFRW (with a tuner). The other a DS-1, PAC-12, magloop, or some other not-too-tall antenna - if for some reason you can't use the wire antenna. 73, Mike, KL7MJ you could c...

just in case

https://wb3gck.com/2018/12/09/revisitin ... -vertical/



not a "great antenna" but it works decently and is quite easy to carry/deploy

try using a 9:1 followed by a choke, for the radiator size, use this https://k7mem.com/Ant_End_Fed.html#Not_Random_Multi as for the "counterpoise" a 1/16 wave wire at the lowest frequency will be a good starting point, willing to "go vertical" install the radiator as an inverted L

here' s another idea

https://www.worldwidedx.com/attachments ... png.37182/

the variable inductor ... are two coils, one slides inside the other, the capacitor across the coils is... a copper pipe with coils inserted, you may redraw the circuit if you like

you may try loading the vertical with a cap hat

I try to stay away from anything "magic" or based on something which (apparently) violates the know physics laws, that being said, the longer size for a "normal" vertical antenna is around 6.5m (about 21ft), that is about 5/8 Lambda on the 10 meters band, the choice isn't random,...

How did it work for you? Exactly as described, tried that with a 10 meters band dipole and the difference in gain and takeoff angle was definitely perceivable even without running a full blown field measurement, repeated the tests on 6m and 2m bands and got the same results, so confirming that what...

Verticals means messing with masts and counterpoise wires. That means more work and time. I'm trading some efficiency for convenience and weight. Not in this case, no counterpoise, maybe you'll need to re-read how the antenna is configured; then the "mast" may be a telescoping fishing rod...