[amsat-bb] FoxTelem Tips
mvivona at yahoo.com
mvivona at yahoo.com
Fri Oct 9 13:33:15 UTC 2015
I had another chance to experiment with the FoxTelem program this morning.
On a 57 deg pass using FCDP+ in IQ mode. I could see the carrier come up nicely in the spectrum, but the vertical line cursor was hunting to the right. When the carrier came up the cursor slowly started to wander in the direction of the carrier, but never even came close to making on frequency before the transmission stopped. It is definitely not as responsive as the FUNcube capture programs cursor which snaps to the carrier as soon as it sees it.Is there a setting that can up the response time of the frequency track-and-lock cursor?
You can duplicate this issue by simply opening the program in IQ mode and transmitting with a low power HT. It sees the spike, but takes about 15 seconds to finally make it to the carrier frequency.
thanks for all your hard work on this project. Michael - KC4AVAAMSAT member
From: Mvivona via AMSAT-BB <amsat-bb at amsat.org>
To: Chris Thompson <g0kla at arrl.net>
Cc: "AMSAT-BB at amsat.org" <AMSAT-BB at amsat.org>
Sent: Thursday, October 8, 2015 10:09 PM
Subject: Re: [amsat-bb] FoxTelem Tips
Using Funcube+ on the FoxTelem program. Saw spike during Fox-1 transmission, moved the cursor by hand to the carrier spike. The eye and the window next to it sprang to life, but never decoded anything.
If I disable the audio filter and unsquelch the program, key up my HT into a dummy load on 145.98 it sounds like a steady buzz even when I'm talking. Shouldn't I be able to hear myself over the telemetry program?
I thought there was one moment I could hear the girl saying Fox one on the telemetry program, should I be able to hear her audio?
Sent from my iPad
On Oct 8, 2015, at 9:25 PM, Chris Thompson <g0kla at arrl.net> wrote:
Great question Michael. Don't know. Find Signal is experimental. Try it and report back.
> On Thu, Oct 8, 2015 at 8:09 PM, Mvivona <Mvivona at yahoo.com> wrote:
> I had a 30deg pass just now an using an arrow and Funcube dongle. I could see the spike on the telemetry program. On my handheld with a rubber duck I could hear the girl say Fox-1 every couple of minutes, but the program would not move its tracking line to the carrier. The last one that came across I moved it with the mouse and it then locked in and I just caught the ending audio come over the speaker.
> I haven't deleted the extra dat files, so I didn't have it in find mode.
> Should it be?
> Sent from my iPad
> On Oct 8, 2015, at 6:08 PM, Chris Thompson <g0kla at arrl.net> wrote:
> If you are attempting to decode Fox-1A in IQ mode with Find Signal enabled,
> then it will also search for signals from Fox-1Cliff and Fox-1D. But that
> is a waste of time at the moment :)
> You can fix that by removing the files from the spacecraft directory. You
> only need to move the files that end in .dat. In fact, renaming the ending
> is sufficient. Leave the file for Fox-1A of course.
> Chris E. Thompson
> chrisethompson at gmail.com
> g0kla at arrl.net
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Chris E. Thompson
chrisethompson at gmail.com
g0kla at arrl.net
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