Geoff Hendrick <[email protected]> writes: > The only way you can tell if you have lost contact with the TM in flight is > to observe that nothing is updating on the altosui screen?
The latest version of the ground station software, which has not been officially released yet but will be out soon as part of a "version 1.1" update, has an 'age' counter in the upper right corner that shows you how many seconds since the last packet was received. This was requested by a customer, and turns out to be a really handy addition! > If the signal is lost for a while (e.g. forgot to man the the yagi) and > then comes back (e.g. remembered to point the yagi) the screen will then > start updating again? Yes. > If you accidentally pull out the usb cable to the teledongle while the TM > is in flight can you reconnect to the teledongle and resume receiving > packets from the TM? Yes. You may have to manually tell altosui to start monitoring again, I'm not sure as I can't remember the last time I tripped over a USB cable during a flight. Should be easy to try during ground testing. > If you close down and restart the altosui software while the TM is in > flight can you reconnect to the teledongle and resume receiving packets > from the TM? Yes. > If you lose signal from the TM (e.g. it lands over a hill) and you go > looking for it with the altosui/teledongle will you start getting packet > updates when the signal is re-acquired? Yes. > Does the TM send its RDF tone in all states? Not during the boost and "fast" coast period. You get them on the pad, and then they start up again after the rocket is definitely below mach and coasting towards apogee. In practice, you don't notice the gap in RDF tones because there's so much else to be excited about for those few seconds... ;-) Bdale ps: for "important flights", or when we're trying to compare the effectiveness of different antennas, we often have more than one ground station recording telemetry. It's really great if you can get a ground station set up back away from the flight line, such that it can be watching the "side" of the rocket in flight and not looking up at the nozzle end for the boost and coast phases, as the antenna pattern is better and you'll get more solid telemetry reception. This is hard to do if you're doing everything yourself, much easier if it's a big launch with multiple folks flying Altus Metrum products where you can offer to help collect telemetry for each other...
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