Hi All, I am *NOT* a digital Ham - in fact, those that know me are aware that I'm THICKER than the two proverbial short planks so I hope someone with a bit more brain capacity than I have will help me.
I have two questions for the group.
Question 1.
Is there ant reason why I can't transmit a modulated carrier (FM) on the 145.900Mhz uplink of AO-16 and receive CW on the SSB/CW? downlink of 437.026Mhz ??.
Question 2.
I am 'TOTALLY' blocked by mountains re: the ISS and PCSAT and do *NOT* have 9600bps gear for AO-51 ... however, I can receive AO-16.
Can I use the UPW - (PSK modulation) - program to transmit APRS data on the uplink and will that be received on the USB downlink ?? ... and be forwarded to the internet via an APRS station ??.
I have attached the UPW file for perusal by anybody who has a few more braincells than LA2QAA and is able to advise.
(There are currently no "normal" 1200bps sats - I am trying to find a 'satellite' use for an IC-E91 D-Star transceiver ... no D-Star repeaters in Norway ... as mentioned, I'm totally blocked by mountains re: the ISS).
I would be very grateful for any advice and/or (sensible) suggestions please.
73 John. la2qaa@amsat.org
At 07:40 AM 3/10/2008, John Hackett wrote:
Is there ant reason why I can't transmit a modulated carrier (FM) on the 145.900Mhz uplink of AO-16 and receive CW on the SSB/CW? downlink of 437.026Mhz ??.
In theory it should work, but you'll gain little, because only one user can access the uplink. Only advantage would be to stations with Rx setups not up to scratch for receiving SSB, that might resolve CW.
Question 2.
I am 'TOTALLY' blocked by mountains re: the ISS and PCSAT and do *NOT* have 9600bps gear for AO-51 ... however, I can receive AO-16.
Can I use the UPW - (PSK modulation) - program to transmit APRS data on the uplink and will that be received on the USB downlink ?? ... and be forwarded to the internet via an APRS station ??.
AO-16 is running FM up/SSB down on a permanent basis. It is not running any digital modes these days.
I'm not familiar with the state of digital operations, as I have little interest in the current state of digital satellite operation, and also find the hardware requirements to be a pain, because that requires a fixed (or at least one that you can't operate while wandering around) station, and I have traditionally operated portable/pedestrian mobile/movile on various forms of public transport.
There's a number of people on here who can advise the best route for digital ops.
73 de VK3JED http://vkradio.com
Question 1. Is there ant reason why I can't transmit a modulated carrier (FM) on the 145.900Mhz uplink of AO-16 and receive CW on the SSB/CW? downlink of 437.026Mhz ??.
Technically, yes it would work. But AO-16 is currently designated for voice operations, and CW mixed in with the voice users might get you some nastygrams from the other users.
Question 2. I am 'TOTALLY' blocked by mountains re: the ISS and PCSAT and do *NOT* have 9600bps gear for AO-51 ... however, I can receive AO-16. Can I use the UPW - (PSK modulation) - program to transmit APRS data on the uplink and will that be received on the USB downlink ?? ... and be forwarded to the internet via an APRS station ??. I have attached the UPW file for perusal by anybody who has a few more braincells than LA2QAA and is able to advise.
Pretty much the same answer as #1. Before the memory system crashed, you could digipeat through AO-16. Since then, we are limited to a bent-pipe setup best suited for voice. We may get to the point with IO-26 where digipeating is enabled.
You could try PCsat for 1200 baud APRS, or use MixW and your computer soundcard for 9600 baud on GO-32.
73, Drew KO4MA
Or you could digipeat 1200 baud APRS through the ISS . The packet system is currently turned on.
73 jeff kb2m
----- Original Message ----- From: "Andrew Glasbrenner" glasbrenner@mindspring.com To: la2qaa@amsat.org; amsat-bb@amsat.org Cc: "Eu-amsat@yahoogroups.com" eu-amsat@yahoogroups.com Sent: Sunday, March 09, 2008 6:24 PM Subject: [amsat-bb] Re: 2 for the group.
You could try PCsat for 1200 baud APRS, or use MixW and your computer soundcard for 9600 baud on GO-32.
73, Drew KO4MA
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participants (4)
-
Andrew Glasbrenner -
Jeff Griffin -
John Hackett -
Tony Langdon