We all know how important it is to have a good counterpoise for a vertical antenna. Especially if you want to work long-distance DX. But sometimes you don't have the space for a full sized counterpoise system. For instance you might be operating from a public place like I often do from local beaches.
Here's an alternative. It's a small tuned counterpoise. It's explained and demonstrated in the video.
These notes on ground tuning units by Alex VK2HAS based on work by G4AKC are worth reading. (pdf) There's also VK6OP's video, again inspired by G4AKC.
PS: Thinking of more things you can do with amateur radio? This book can help. Under $US 5 as an ebook or available in paperback as well. Many favourable reviews.
Here's an alternative. It's a small tuned counterpoise. It's explained and demonstrated in the video.
These notes on ground tuning units by Alex VK2HAS based on work by G4AKC are worth reading. (pdf) There's also VK6OP's video, again inspired by G4AKC.
PS: Thinking of more things you can do with amateur radio? This book can help. Under $US 5 as an ebook or available in paperback as well. Many favourable reviews.
Hi Peter,
ReplyDeleteI started this a couple of days ago and ran out of time, so Take 2.
Do you know if a GTU could work on a 10th floor balcony with a hamstick?
Obviously the real ground is a long way down and I've never had any luck using the railing as a ground. I've used hamsticks with 1/4 wave counterpoises but they are spiraled around the base (very small balcony).
I've had some success with magnetic loops but the nice weather is approaching, the magloop takes up half the balcony and a hamstick is easier to manage, if only I could get an effective ground and pump more signal out the radiating element.
Thanks.
73 Paul VA3ZC
Paul - don't see why not. G4AKC has used fairly small things (ie his trolley) with a GTU. Although there would be no coupling with water in your case.
ReplyDelete