I used to know the answer. But too old to remember.
It might be that, even though the radio is full duplex, the TNC might be half duplex? And since the satellite turns around the packet INSTANTLY to the downlink, that the TNC is not ready to receive packets quick enough?
This can be proved not true if anyone has ever seen their own downlink packet.
BUT Wait, all it takes is anything else queued up on a busy downlink to cause the data to be queued up a bit and then you will see your own packet because every thing is waiting a few milliseconds.
So Seeing or not-seeing your own packets may or may not prove anything about this theory.
Back under my rock. Bob, WB4APR
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Robert Switzer via AMSAT-BB Sent: Friday, June 01, 2018 4:15 PM To: AMSAT BB amsat-bb@amsat.org Subject: Re: [amsat-bb] Standard for AMSAT status board observations of FS-3
one "should" see decoded Msgs in the "MSG" list on the D72A, however. Correct? Rob KA2CZU
On Friday, June 1, 2018, 3:48:07 PM EDT, Ryan Noguchi via AMSAT-BB amsat-bb@amsat.org wrote:
Hi, John.
I don't recall ever receiving that indication that I've received one of my own packets repeated by FS-3, even when I've been iGated or completed a QSO. However, I'm usually being bombarded by so many non-APRS packets in the downlink on nearly a continuous basis for almost the entire pass that I wouldn't be surprised if the D72's user interface or decoding processing just isn't able to keep up in real time.
73, Ryan AI6DO
On Friday, June 1, 2018, 11:56:50 AM PDT, John Brier johnbrier@gmail.com wrote:
At the risk of introducing confusion based on my inexperience using FS-3, I will say that I do know when using the D72 with the ISS digipeater or with any standard simplex digipeater, when your packet is repeated you do get realtime visual and audio indication it was repeated. The radio makes a unique audio alert when it receives its own packets repeated back and the screen flashes "MY POSITION" above "via RS0ISS" or whatever the callsign of the digipeater is. This can be seen in my video below. The limitation I am familiar with is that your repeated/received packets do not then show up in the LIST, which can be confusing, as it was for me as seen in the below. video. I believe the D74 does allow you to view your repeated/received packets in its LIST.
https://www.youtube.com/watch?v=woSzJ-PtH2M&feature=youtu.be&t=36 73, John Brier KG4AKV
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