Yea that’s my impression as well. If we were to assume the center of the documented passband is incorrect and make it 10KHz HIGHER on the downlink 435.880MHz IIRC then the passband becomes symmetrical. 

Herb

Please excuse any typo's as this was sent from my iPhone.

On Jan 9, 2022, at 8:00 AM, LU2DPW Juan Carlos via AMSAT-BB <amsat-bb@amsat.org> wrote:


Hi John and all

Indeed, I have been able to verify that the upper edge
 of the passband is higher than the one reported.

In the AOS at about 8º I have been able to hear my return
 in 435212 khz with a uplink in 145844 khz.

73 de Juan LU2DPW GF05gi


El domingo, 9 de enero de 2022 00:53:58 ART, John Brier <johnbrier@gmail.com> escribió:


I did a little test tonight and I think the edge of the top of the
passband is around 10KHz higher than published. Don't have time to do
the math on the bottom of the passband.

Is my math right?


I could have just zoomed out on the waterfall... oh well.

73, John Brier KG4AKV

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