Thanks for explaining Bob. I wasn't clear on just how much "heavier" APRS packets were.
It would definitely take a concerted effort to get people to use STATUS messages more.
73, John Brier KG4AKV
On Sat, Apr 13, 2019, 10:15 Robert Bruninga via AMSAT-BB amsat-bb@amsat.org wrote:
I agree, APRS messaging is a sense of satisfaction, but it generally is a 5-times multiplier of packet load just to get a single text through. In fact, that is the whole reason APRS was invented compared to conventional packet, to avoid the huge explosion of packets due to all the retries and acks.
And via a space digipeater with 100% "hidden transmitter" problem, this multiplication of QRM is unrelenting.
If most people are not doing it, then maybe we need some new training. IF PSAT2 and BRICSAT2 gets launched successfully and with AISAT-1 and the new ISS digipeater, that might be a good time to start a new educational campaign.
Once one has selected the STATUS TEXT MENU, then each time a new callsign is seen, it only takes a single MENU press, and then rapid 5 presses of OK to be right on the STATUS TEXT editing page. Then just overwriting the last few bytes of the new station's call and hit OK and the new packet is ready to go. Then toggling the BCON button can resend it.
Bob
On Sat, Apr 13, 2019 at 9:48 AM John Brier johnbrier@gmail.com wrote:
It's not a tutorial but you can see me operating the ISS digipeater in these videos:
https://www.youtube.com/watch?v=woSzJ-PtH2M
https://www.youtube.com/watch?v=nhv7oz_El80
Note the ISS digipeater was on UHF briefly when the VHF radio was having issues. It hasn't been on UHF since.
Bob, I don't think people use STATUS messages in practice at least on the ISS digipeater, so I'm not sure that's good advice in this case. I personally like seeing notification that I specifically was sent a message.
73, John Brier KG4AKV
On Sat, Apr 13, 2019 at 9:36 AM Robert Bruninga via AMSAT-BB amsat-bb@amsat.org wrote:
Generally, APRS messages are not welcome via satellites because they require ACKS and retries. and can only be read easily by the recepient.
The most efficient way to communicate with APRS is to learn to modify
your
STATUS text quickly and include all comms in those 43 allowed
characters.
That way, the text gets a free ride with your GRID and position packet.
Bob, WB4APR That way, eveyrone can see your messages and you can RETRY by toggling
the
BCON button. As soon as you see your "MY PACKET" digipeated, you can assume the other person saw it and move on.
On Sat, Apr 13, 2019 at 3:11 AM Les Rayburn via AMSAT-BB <
amsat-bb@amsat.org>
wrote:
Searching YouTube and Google without a lot of success. I’ve found
videos
on how to set up the TM-D710 for APRS QSO’s, but nothing that
demonstrates
the actual steps involved in completing a contact.
Should I “beacon” a message that says “CQ DE N1LF EM63 K”? How will I
know
if I’m getting a response? Do I then transmit pre-programmed user
messages?
How do I enter the other stations call sign on the fly? How do I
switch to
the next message?
I really need a “for dummies” guide on this…and can’t seem to find
it.
Can anyone point me towards an article or YouTube video?
73,
Les Rayburn, N1LF Maylene, AL EM63nf AMSAT #38965, ARRL Life Member, CVHS Life Member, SVHF Member
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