Thanks for the link to Everett's mobius strip loop experiments, Nick! I wasn't aware he's worked on any antennas buy FSLs.
Interestingly, he's discovered the "PEX AL PEX" tubing that the LZ1AQ loops frequently use. I thought the tubing was available only in Europe, but Everett mentions finding a supplier in the USA. With its aluminum skin and semi-rigid plastic form, this tubing is a great basis for home brew magnetic loops. I'd guess it's easier for hobbyists to work with than 100% aluminum tubing. Andrew Ikin of Wellbrook Communications, known for extensive R&D of his antennas, published a short paper a while back which pointed out a problem of loop-amplifier mismatch with mobius strip loops: https://www.wellbrook.uk.com/loopantennas/pdf/ComparisonoftheMobiusLoop.pdf I know he is not a fan of this design, despite Dr. Baum/Chris Trask's investigations. The mobius strip approach is found in Pixel Technologies's competing RF-PRO1A loop. (Current version is the $499.99 RF-PRO-1B <https://www.dxengineering.com/parts/dxe-rf-pro-1b>, sold by DX Engineering.) 73, Guy Atkins Puyallup, WA On Tue, Sep 18, 2018 at 11:22 AM, Nick Hall-Patch <[email protected]> wrote: > Another possibility is: https://www.george-smart.co.uk > /wordpress/wp-content/uploads/2017/02/EWS-Article-in-MW-News.pdf > > <snip> > > _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
