What is needed for a valid packet contact on the ISS 73 Brock -- W6GMT BROCK THOMSEN MARCELL MN 56657 EN37EN
On Sun, 09 Dec 2012 14:36:43 +0100, [email protected] wrote:
What is needed for a valid packet contact on the ISS 73 Brock -- W6GMT BROCK THOMSEN MARCELL MN 56657 EN37EN _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
if you are talking aprs style contact it is usualy done like this: station A sends a beacon station B sends a bullitain message with all the calls he has recieved so far in the pass Station A sends a bullitain message with all the calls he has recieved so far in the pass if station A is in the list of station B and Station B is in the list of station A I would say it is a confirmed contact.
in most places there are igates that will send the pass to the APRS internet stream and you can check back on aprs.fi or findu.com
where the contact? that just show that both was able to copy each other.
John
if you are talking aprs style contact it is usualy done like this: station A sends a beacon station B sends a bullitain message with all the calls he has recieved so far in the pass Station A sends a bullitain message with all the calls he has recieved so far in the pass if station A is in the list of station B and Station B is in the list of station A I would say it is a confirmed contact.
in most places there are igates that will send the pass to the APRS internet stream and you can check back on aprs.fi or findu.com
-- 73 Andre PE1RDW _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
I vote that as comment of the year ;-)
On 9 Dec 2012, at 16:30, John Becker [email protected] wrote:
where the contact? that just show that both was able to copy each other.
John
if you are talking aprs style contact it is usualy done like this: station A sends a beacon station B sends a bullitain message with all the calls he has recieved so far in the pass Station A sends a bullitain message with all the calls he has recieved so far in the pass if station A is in the list of station B and Station B is in the list of station A I would say it is a confirmed contact.
in most places there are igates that will send the pass to the APRS internet stream and you can check back on aprs.fi or findu.com
-- 73 Andre PE1RDW _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
where is the contact? that just shows that both were able to copy each other.
But they exchanged a QSL and both got the original exchange info from each other. On a shared single channel resource, we should be concerned with contact efficiency. This takes 16 packets for 8x8 or a total of 64 confirmed contacts. 2N for N*N contacts Compared to 256 packets for 64 confirmed contacts the analog way (4*N*N) Or compared to the impossible 2560 retries trying to do it via the ISS BBS!
[an] aprs style contact it is usualy done like this: station A sends a CQ beacon with his exchange info station B sends a CQ beacon with his exchange info station B sends a bulletin message with all the calls he has recieved so far in the pass. Station A sends a bulletin with all the calls he has recieved so far in the pass. if station A is in the list of station B and Station B is in the list of station A, I would say it is a confirmed contact.
in most places there are igates that will send the pass to the APRS internet stream and you can check back on aprs.fi or findu.com
Bob, WB4APR
participants (5)
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Dominic Hawken -
John Becker -
PE1RDW -
Robert Bruninga -
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