[amsat-bb] Re: The Mode B tradition

Andrew Glasbrenner glasbrenner at mindspring.com
Thu Sep 14 17:00:51 PDT 2006

Don't imply DX wasn't worked on Mode S, even at large squints. I worked 
India from Florida myself at 3 degrees of elevation on U/S SSB on AO-40, as 
well as Guam the other direction at over 30 degrees of squint also on SSB. I 
did this all on a 36" dish, short M2 UHF beam, and a standard az-el rotor on 
a roof tripod. Others did the same or similar, often with the entire station 
in a suitcase.

Your previous comment on rad testing was also a bit oversimplified I think. 
Is not the processor of the SDX an integral part of the transponder, unlike 
say the transponder on AO-10? You know, the one that worked for years after 
the IHU was a crispy critter?

It seems that I remember the last time the discussion of a analog non-SDR 
transponder as a backup came up, none other than the president of AMSAT 
himself interjected to say there _would_ be a non-SDR backup. Has this 

73, Drew KO4MA

Noticed this was posted recently too, good reading. Thank you to the Eagle 
Team for quickly posting it.

 http://www.amsat.org/amsat-new/eagle/EaglePedia/index.php/12_Sep_2006_Minutes> You're right. P3E and Eagle will operate similarly to AO-10 and AO-13 on> mode B and P3E is similar to AO-13 on mode S. I don't remember making a> single S-band contact outside the U.S. on AO-13. The advantage of mode Bis> that it works with large off-pointing angles and that is what is required> for DX. I was able to work India (Bangalore) using AO-10 on mode B andthat> was almost on the opposite side of the earth from LA.>> 73,>> John> KD6OZH

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