Who is she and why did she announce her presence the other evening? (~0300 UTC Wednesday / 2200 CDT Tuesday) For me, it was right about/after AOS but I'm sure she wasn't talking solely for my benefit. Mode change? Reboot? Desperate plea for help?
Peter
Peter,
The voice is that of Veronica Monteiro, the daughter of Tony Monteiro, AA2TX (SK), former AMSAT VP Engineering and principle designer of the Fox satellites. The voice beacon "Hi, this is amateur radio satellite Fox-1" is transmitted when the transponder has not been keyed up for three minutes. The subaudible telemetry is also transmitted while the beacon is active, allowing ground stations to collect telemetry when there are no users on the satellite.
73,
Paul, N8HM
On Thu, Jun 30, 2016 at 10:33 AM, Peter Laws [email protected] wrote:
Who is she and why did she announce her presence the other evening? (~0300 UTC Wednesday / 2200 CDT Tuesday) For me, it was right about/after AOS but I'm sure she wasn't talking solely for my benefit. Mode change? Reboot? Desperate plea for help?
Peter
-- Peter Laws | N5UWY | plaws plaws net | Travel by Train! _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
On Thu, Jun 30, 2016 at 9:43 AM, Paul Stoetzer [email protected] wrote:
The voice is that of Veronica Monteiro, the daughter of Tony Monteiro, AA2TX (SK), former AMSAT VP Engineering and principle designer of the Fox satellites. The voice beacon "Hi, this is amateur radio satellite Fox-1" is transmitted when the transponder has not been keyed up for three minutes. The subaudible telemetry is also transmitted while the beacon is active, allowing ground stations to collect telemetry when there are no users on the satellite.
OK, so not trapped there being forced to watch bad movies. Phew.
I have to say, though, that I'm amazed that it had been quiet for 3 minutes! :-)
On 6/30/2016 09:43, Paul Stoetzer wrote:
The voice beacon "Hi, this is amateur radio satellite Fox-1" is transmitted when the transponder has not been keyed up for three minutes.
FWIW, that's two minutes after the hang timer (downlink) stops and every two minutes thereafter until the hang timer is activated again by receiving an uplink signal. If the hang timer is activated during the ID, the ID will stop. Also in Safe Mode, the ID is every two minutes. For those of you keeping score, it's actually about every 2 minutes 11 seconds from the start of the previous ID because the two minute timer starts after the completion of the ~11 second ID. Each ID whether Transponder Mode or Safe Mode contains one current telemetry frame and one high or low telemetry frame, with the high/low alternating each ID (Current/High, Current/Low, etc.) There are no experiment frames in the voice ID telemetry. There is no voice ID in Data Mode. The first (current) telemetry frame is sent prior to the ID audio to help ensure that it can be decoded if there are problems. The voice ID commences at the second (high or low) telemetry frame. Each ID allows a second or so for the "Fox Tail" to come up to the downlink frequency and then pauses about 1/2 second prior to beginning the telemetry/announcement so that a "dead carrier" is transmitted for Doppler sensing as part of an experiment that Douglas Quagliana KA2UPW/5 is working on in a future ground application.
Veronica will be present on all four of the Fox-1 FM satellite series.
Maybe we should have a contest or award, capture/transcribe all eight Transponder Mode/Safe Mode voice IDs (they are all different, each of the four Fox-1 FM satellites) for bonus recognition as a hard core satellite nerd! :-)
Jerry Buxton, NØJY
participants (3)
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Jerry Buxton -
Paul Stoetzer -
Peter Laws