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Yeah, usually are heavy as they are meant to withstand quite some power. If you build one with a 9:1 unun plus a choke and a 560ohm non inductive resistor you won't have the same of a BW but close and much more light. In any case other antennas may be more adequate for portable use, the G5RV is a good performer. Still a tuner and a wire is also good as a dipole with ladder line. I would never use RG174 or similar size cables, I checked its real losses and is really bad. I use RG174 only for audio, PTT and other interfaces with the PC. Use instead Messi Paoloni same size of RG58 cable. That is light and low loss.

Il 12/mag/2018 01:13, "William R Maxwell" <wrmaxwell@...> ha scritto:

I have a Chinese copy of the old B&W folded dipole and have only used it on 2 ocassions, Kees. I saw considerable losses when compared to a G5RV that we used as a comparison at the same campsite, although I did not try it across all the HF bands to see if the loss varied, as Gordon reports.

Added to that, mine was obviously aimed at the military or commercial market and is therefore damned heavy! Not for QRP use methinks, at least not for portable use.

Bill, VK7MX

On 12/05/2018 1:07 AM, Gordon Gibby wrote:

Kees --- I particularly DISLIKE those broadband tilted-folded-terminated?antennas because they ahve HUGE LOSSES on various? ferquencies, as much as 10 dB.

I much prefer something like a well-designed off center fed dipole with current/voltage baluns and the resullting abilaity to work reasonably well across wide swaths of the spectrum --- or an auto tuner and a balanced line fed random dipole.

10 dB losses jjust make me shudder inside.? ??

Gordon Gibby

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From: [email protected] <[email protected]> on behalf of Kees T <windy10605@...>
Sent: Friday, May 11, 2018 10:47 AM
To: [email protected]
Subject: [BITX20] Broadband HF Folded Dipole Antennas

?

Broadband HF Folded Dipole Antennas at QRP power levels.......any experience with them out there ? The advantage of these is "no tuner required". I recall B&W selling these in the 60's and the military likes them because they don't require tuning and are good from 2-30MHz with a maximum SWR of about 2:1 and since they are wire antennas, you can roll them up and carry them easily.

73 Kees K5BCQ