[amsat-bb] AO-7 Mode A transponder question

[Adrian Engele]

 Alan,
You mention documented "sweet spots"  can anybody point out where we can find this information.   
I saw something on the AMSAT-BB many years ago but never could find that email again.

73, Adrian AA5UK


    On Wednesday, September 11, 2019, 12:18:43 PM CDT, Alan via AMSAT-BB <amsat-bb at amsat.org> wrote:  
 
 The Mode B transponder has, due to varying noise and sensitivity, some
documented "sweet spots."  Mode A, while not as popular, does get some use.
Are there any observed equivalent frequencies?

73,

Alan
WA4SCA

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