Hi Robin.
If you want to monitor satellite telemetry, e.g. AO-73, or listen to the strong signals from the ISS, then the Lindenblad is a great choice.
However, if you want to make QSOs via the satellites I believe you will need an antenna with some gain.
Of the satellites that are available, SO-50 has quite a weak downlink. Meanwhile, the available linear transponders by their nature divide the available power between the users. It's always an advantage to have a good receiving system and an omnidirectional antenna is unlikely to be an optimal solution. Circular polarisation however is a definite advantage.
Let us know how what choices you make and how you get on.
Good luck
David G0MRF
-----Original Message----- From: Robin Midgett K4IDC@comcast.net To: AMSAT-BB amsat-bb@amsat.org Sent: Mon, 15 Sep 2014 6:23 Subject: [amsat-bb] Lindenblads
Hello to the group, I'd like to hear from any users of the Lindenblad antennas regarding switching polarity & circularity. Based on the article on the AMSAT web page by W6SHP at http://www.amsat.org/amsat/articles/w6shp/lindy.html, I'm led to believe that the maximum effect comes from having one Lindy for each of RHCP & LHCP per band in addition to being able to invert the polarity of each. I'd like to hear from users concerning how often switching between RH & LH circularity yields benefits as compared to switching polarity on a single Lindy.
I've long had an interest in satellite operation. Due to being involved with a recent ARISS event, the interest level has been elevated..it's time for me to get on the birds. I welcome your input regarding the Lindenblad antennas. _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb