The QRPer Board

Bob, I understand your wish to try maximizing the little power you use, but... If it was a matter of chasing DX or to contact some "rare" call, then I'd absolutely go for a "Jungle Job", since it's easy to put together so that it will be easily portable/deployable and since it wi...

couple notes, first of all, it will be easy to optimize the "jungle job" for CW, just calculate it for the middle of the CW slice and then prune the dipole to bring it to resonance Then... a contest like the one you named is somewhat "a different kind of beast" and in that case y...

Why not a G4ZU (SK) "Jungle Job" antenna ? https://www.essexham.co.uk/images/g4zu-junglejob-01.jpg it's a 2 elements yagi with a decent gain and the size is still manageable, plus it just needs a simple 1:1 balun at the feedpoint; a note, the formulas given are for metric units with a bit ...

How long can i go with RG316 before the losses are too much. i usually carry 35’ of RG58 just thinking something smaller and more manageable for a push up mast. regarding the RG58, check the loss here https://messi.it/en/comparison-chart-50-ohm-cables.htm and then, regarding cable, check out the li...

A tribander on a 100 foot tower will outperform just about anything, but it's really hard to fit one in my backpack. I think the same thing applies here - a 1/4 vertical is probably easier to carry and set up than a 5/8 vertical, so even if it may technically have better performance it loses in the...

The infos are here

https://practicalantennas.com/designs/v ... s/5eights/

in short, a "poor" quarter wave vertical can outperform a 5/8 if installed at the "right" height, the trick is to adjust the top height

Slowy working on a "Field Trip to Greece" report for Thomas. Half our group got COVID, including my YL, so things have been moving pretty slow. I got some weird Asia Minor virus that's persistent. Anyway, trip was totally worth it. Hope it isn't the so called "long COVID", at an...

So you finally got back home !

Now... once the dust sets, may we hope to see some report with pics and notes ?

KL7MJ wrote: ↑Sat Sep 09, 2023 1:45 am I'm looking forward to testing the slinky EFRW against my homebrew magloop!

why so, use an antenna for TX and another one for RX, as far as I know, there's no law forbidding it

have a look here https://www.amazon.com/Mini-Key-Automatic-Morse-Shortwave/dp/B0BCFNQTFF and here too https://www.amazon.com/stores/PUTIKEEG/page/F551B48B-9FBF-477F-A117-DAE0D6BD057A sure, they aren't Vibroplex or Begali, yet the price is interesting and they also offer spare parts, if needed, plus ...