The QRPer Board

Covers all bands from 80m up w/o any band switching, for QRP it can be built using polyvaricons, in effect the hard to find parts are the twin air variable capacitors full informations here https://www.pa0fri.com/ATU/FRImatch/FRImatcheng.htm and here is a nice version http://dl4cs.de/funktechnik/ant...

another alternative may be the G7FEK antenna...

https://www.g7fek.co.uk/blogus/newsshow ... nten_29507

and

https://rsars.org.uk/wp-content/uploads ... s-1-31.pdf

NEC model here

https://q82.uk/g7fek

Hi All, I'm looking to add a second HF antenna in the garden and am considering a ZS6BKW to run North-South and complement my EFHW running East-West. Familiar with the concept of the ZS6BKW and its advantages over the G5RV (which I used back in the '90s); I'd appreciate any comments or views from t...

further infos

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

and add this

https://www.g4akc.co.uk/ground-tuning-units-gtus/

between the antenna and the ground stake or the radials

also see

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

Hello! just purchased my 1st QRP transceiver the Xiegu 6200. I’m am all set with my Base Antenna I’m looking for a portable shortwave receive antenna to use on SOTA. Does anyone have any suggestions? Thanks Dave B did you consider a so-called "rybakov" antenna ? https://wb3gck.com/2018/12...

I am looking to build (yet another) 4:1 unun for a Rybakov antenna. Looking online, I see about half of the articles recommend a TX-2 toroid, and half recommend a TX-43. I would think that the TX-2 toroid wouldn't be great for the hgher bands - if a powdered toroid were needed I would have expected...

wanna try a "no tuner" antenna :) ? here is the idea; pick a dummy load and some lenght of coax cable at one end of the coax place a connector going to the dummy load, that will be the "far end" of the antenna (the "top" if laid as a vertical, at the other end of the co...

Andrew do you actually have experience with a 29 ft end fed antenna? I do, and it works pretty well on 40-10 with a 9:1 transformer. no, didn't try it; but the fact that it's shorter than 1/4 wave on 40 raises some doubt about its radiation efficiency down there and given that when it comes to QRP ...

https://k7mem.com/Ant_End_Fed.html#Not_Random_Multi Andrew do you actually have experience with a 29 ft end fed antenna? I do, and it works pretty well on 40-10 with a 9:1 transformer. no, didn't try it; but the fact that it's shorter than 1/4 wave on 40 raises some doubt about its radiation effici...