Burns,
The TM-D700 used the cross band repeater function to listen to the ARISSat 2 meter FM voice, and then rebroadcast it on 70 cm. It was reported to have been used to check the first short test. I do stuff like that in the home shack, even using dummy loads, but then I don't live in a metal can. ;) I do not know exactly how this was lashed up to give a definitive answer.
Alan WA4SCA
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Burns Fisher Sent: Sunday, April 17, 2011 1:34 PM To: AMSAT BB Subject: [amsat-bb] Re: ARISSAT-1 >> Why not launch it now?
According to the ARISSAT-1 critical design review, the battery is mission-critical for the first 15 minutes. I assume it has to run the 15-minute timer that delays that start of operation until the bird is some distance from the 'nauts. Based on that info, I would guess it is not viable to launch ARISSAT-1 with a non-operational battery.
Do they have a spare? Depends what you mean. Since it is the same battery that powers the Russian space suits, there are likely some on board. Is that a suit batter that could be used in the satellite? That's a different question. Important as it is to us, I imagine that ARISSAT-1 is not all that important to the ISS partners.
So now I have a question for Tony or others in on the technical details: How was the 70cm transmission from this Yuri's day test supposed to work? Is there an audio output from the ARISSAT-1 to plug into the station's xmitter? Or was the station planning to pick up the 2m transmission and re-broadcast on 70cm? (I'm guessing the latter, which implies that there was probably not even a very weak 2m signal that the ISS receiver right next door could pick up.)
Burns, W2BFJ
On Sat, Apr 16, 2011 at 10:45 PM, Dave Taylor dave.w8aas@verizon.netwrote:
Because it is not NASA's satellite. It is up to the Russians to deploy, and their next scheduled EVA is in July.
-- Dave, W8AAS
On Apr 16, 2011, at 12:27 PM, AB9RN wrote:
Curious why NASA is delaying such a long time to hand launch the satellite until July? I would think they would want to get it out of there and de-clutter the ISS. Given that it appears to be dead without a solar panel functioning, it seems like an obvious idea to me. Is there some reason why they can't schedule this sooner? _______________________________________________ Sent via AMSAT-BB@amsat.org. 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 AMSAT-BB@amsat.org. 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 AMSAT-BB@amsat.org. 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