Hi Skip, Appreciate your comments.
The Lindenblad is indeed a favorite omni-directional antenna for satellite enthusiasts since it maintains nearly circular polarization for all azimuth and elevation angles of wave arrival. It does, however, favor lower elevation angles for gain. The Lindenblad can be stacked to further increase gain near the horizon and as such are used commercially by some FM and television stations as a transmitting antenna. I agree that in a single array configuration it does not have the gain realizable by a directive antenna, no omni-directional antenna will. But in those cases where a rotatable antenna is not feasible nor permitted (as on some public structures housing EOCs) and where a less complicated single feed line solution is desired for both FM and SSB usage, it is a lesser known design that might easily fit the requirement. Also came across this reference to a more rugged two meter Lindenblad design with detailed construction info: http://www.arrl.org/qst/2007/08/monteiro.pdf 73 Ted WA7ZZB ----- Original Message ----- From: kh6ty To: digitalradio@yahoogroups.com Sent: Friday, February 29, 2008 3:00 PM Subject: Re: [digitalradio] Some thoughts on antenna polarization for emergency use Hi Ted, That's a good thought, but the problem is that achieving more than a 16 to 25 mile range without a repeater requires more gain (on at least one end - usually the home station end) than you can get from a lindenblad antenna, [...snip...] The Lindenblad is most useful for satellite work, where it can accomodate circular polarization and a high angle of reception. [...snip...] 73, Skip KH6TY [...snip...]
