The program can easily detect and fix the TLE preliminary data errors
for working in satellite programs after launching the satellite in orbit
The original version of the program released before launching Fox-1D
works in Windows-7 and higher. Version that works in Windows XP is now
added. The program name for Win-XP changes to TLEdoctor.
Both programs can be downloaded at http://oscar.ok2gz.eu/fox1d.php
73
Jarda ok2gz
---
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Hi folks,
AO73/FUNcube is now in amateur mode for the weekend with the transponder on!
Please see below for all FUNcube mission info
73s Graham G3VZV and the FUNcube team.
++++++++++++++++++++++++++++++++++
FUNcube frequencies and other details
++++++++++++++++++++++++++++++++++
AO-73 FUNcube-1
The transponder is normally operational only when the satellite is in
eclipse, ie the solar panels are NOT being illuminated. During weekends
(from pm Fridays UTC to PM Sundays UTC) the transponder is operational 24/7.
When the transponder is switched off, the telemetry beacon is on full power,
when the transponder is on the beacon it is on low power. During holidays,
eg Christmas, New Year, Easter, etc, the transponder maybe activated for
extended periods. Watch AMSAT-BB for announcements which are usually made on
Friday evenings (UTC)
The nominal transponder frequencies are:
Uplink: 435.150 - 435.130 MHz LSB (Inverting)
Downlink: 145.950 - 145.970 MHz USB
Telemetry Tx: 145.935 MHz BPSK
(The passband may be up to 15kHz higher depending on on-board temps. Lower
temperatures give higher freqs!)
FUNcube-2 (aka FUNcube on UKube)
The FUNcube-2 sub-system continues to operate autonomously and, almost
continuously, in amateur mode. The transponder is operational and the
telemetry downlink is functioning with about 70mW output. The FUNcube-1
Dashboard does not correctly display the telemetry but it does correctly
decode the data and uploads it to the FUNcube Data Warehouse from where it
can be examined. Most of the real time data channels are operational and
these include battery voltages, temperatures and ADCS data coming via the
main On Board Computer (OBC).
The transponder is interrupted for a few seconds every 2 minutes when the
other transmitter sends its CW beacon and, occasionally, for a few seconds
when the main OBC reboots (approx seven times each orbit).
The nominal transponder frequencies are:
Uplink: 435.080 - 435.060 MHz LSB (Inverting)
Downlink: 145.930 - 145.950 MHz USB
Telemetry Tx: 145.915 MHz BPSK
(The passband may be up to 10kHz higher depending on on-board temps. Low
temperatures give higher freqs!)
EO79 FUNcube-3
Due to power budget constraints the transponder cannot be operational 24/7
and an orbit specific schedule has been developed. The transponder will
commence operation 27 minutes after the spacecraft enters sunlight and will
stay on for a period of 25 minutes. This schedule may be modified in future
months as a result of experience.
The nominal transponder frequencies are:
Uplink: 435.0723-435.0473 MHz LSB (Inverting)
Downlink: 145.946-145.971 MHz USB
Further detailed info on EO79 transponder frequencies is at:
https://amsat-uk.org/2016/11/10/eo79-funcube-3-transponder-commences-regula…
EO88/Nayif-1/FUNcube-5
EO88 is presently operating in autonomous mode. The transponder is
operational when the satellite is in eclipse, ie the solar panels are NOT
being illuminated.
When the transponder is switched off, the telemetry beacon is on full power,
when the transponder is on the beacon it is on low power.
The transponder frequencies are:
Uplink: 435.045 – 435.015 MHz LSB (inverting)
Downlink: 145.960-145.990 MHz USB
Telemetry Tx: 145.940MHz
All FUNcube transponders are sponsored by AMSAT-UK and AMSAT-NL. We are very
grateful for the assistance given by Innovative Solution In Space Bv, The
Netherlands.
_______________________________________________
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expressed
are solely those of the author, and do not reflect the official views of
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Hi All,Just to confirm that AO73 is now in continuous education mode with the high power telemetry. Amateur mode may be expected to resume on Thursday morning(UTC)73GrahamG3VZV
Students at the Ivy League Brown University are developing an amateur radio satellite EQUiSat that will carry a Xenon Flash Tube (XFT) subsystem to act as an Optical Beacon that should be visible to the unaided eye of observers on Earth.
See http://www.uk.amsat.org/?p=10635
73 Trevor M5AKA
AMSAK-UK http://www.amsat-uk.org/
----
Hi All,
AO73 is now seeing short eclipse periods of around 15 minutes every
orbit. The spacecraft is now operating in autonomous mode. ie: full
power tlm when in the sun and with the transponder on when in eclipse.
The transponder will be switched to continuous operation on Thursday
morning.
Have fun
73
Graham
G3VZV
Thinking about adding the 1.2Ghz module for my 9100. Prices have dropped a little and units will start become harder to find once production ends. Anybody using this band? I read it's used as a uplink frequency for some satellites. Any input appreciated.ToddAL7PX
I’m new to receiving FoxTelem.
I have it running on a Mac with a Funcube dongle.
The Mac is running High Sierra 10.13.3 and Java 8 update 161.
I have had some success with AO-85 and AO-91 but none with AO-92.
The instruction manual says that I should use Java 6, however this is no longer available and not supported.
Is it that the instructions are out of date, or can I acquire Java 6 form somewhere or is Java 8 OK?
Every thing seems to work with the FoxTelem application (Ver 1.06q_m)
Any hints or tips greatly appreciated.
Many thanks
Pete G0ABI
DTUSat-2 (object 40030) is operating at 2401.835 MHz sending a full or partial beacon every 30 seconds. Since the Doppler is 100 KHz over the entire pass, it's tricky copying it with a traditional receiver such as an FT-847 (Doppler correction has to be right on). It's best seen with a SDR. Since its batteries are dead, it signals cannot be heard in eclipse. Its in an almost perfect polar orbit and can be copied around noon daily everywhere on earth. It is listed in the AMSAT keps and pass predictions. Also see http://wakky.asablo.jp/blog/
Also, I've heard that the ISS sends out a very strong video carrier at 2395 MHz (my converter will not tune that low).
I asked a ham in Italy to check it out and he indicated it is always on.
I hope this helps.
Mike (K9QHO)
Hi Bob, do you know the object number by chance?
Thanks
Ted
K7TRK
-----Original Message-----
From: AMSAT-BB [mailto:[email protected]] On Behalf Of Robert
Bruninga
Sent: Saturday, March 31, 2018 9:16 AM
To: amsat bb
Cc: TAPR APRS Mailing List
Subject: [amsat-bb] Tiangong Re-enetry on Heavens bove
You can see the live track of Taengong to re-enter in the next 24 hours on
http://www.heavens-above.com/
Just remember, as it suffers increased drag, it will speed up and be ahead
of classic predictions.
But at least you can see when you are under the orbit as to whether it is
worth going outside. I 'd go out several minutes before the prediction
since we dont know how quickly they are updating the elements as it speeds
up.
and even if it is daytime, you will see it if it comes in in your area...
Bob
_______________________________________________
Sent via AMSAT-BB(a)amsat.org. 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