ARISS News Release No. 19-18
Dave Jordan, AA4KN
Dec. 24, 2019
SSTV Event Planned for Late December
ARISS is planning an SSTV event featuring commemorative images. This event is currently scheduled to begin on December 28, 2019 at 11:00 UTC and ends at 18:20 UTC on January 1, 2020. Please make note that sometimes changes may occur in the crew work schedule that could affect our SSTV transmission dates and times, so frequently check our ARISS Facebook and Twitter accounts shown below for any updates before and throughout the event.
Transmissions will be sent at 145.800 MHz FM in the SSTV mode PD-120. Once received, images can be posted and viewed by the public at http://www.spaceflightsoftware.com/ARISS_SSTV/index.php and you can receive a special SSTV ARISS Award for posting your image. See https://ariss.pzk.org.pl/sstv/ for details. Also for simplicity, we have added a new information tab for SSTV events, under the General Contacts pulldown menu at www.ariss.org .
Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the International Space Station (ISS). In the United States, sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL), the ISS National Lab and National Aeronautics and Space Administration (NASA). The primary goal of ARISS is to promote exploration of science, technology, engineering, and mathematics (STEM) topics by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students in classrooms or public forms. Before and during these radio contacts, students, educators, parents, and communities learn about space, space technologies, and amateur radio. For more information, see www.ariss.org.
ARISS Facebook: Amateur Radio On The International Space Station (ARISS)
ARISS Twitter: @ARISS_status
Dave Jordan, AA4KN
> We really need/want one these GEOstationary ham band transponder
> satellites over the Americas !
> Merry Christmas and a Happy New Year to all.
Plenty of Christmas cheer on the LEO sats - W2S (12 Days of Christmas) has
been very active, too.
These European hams are having the time of their lives !
We really need/want one these GEOstationary ham band transponder satellites over the Americas !
Merry Christmas and a Happy New Year to all.
F5UII - Christian (@f5uii)
12/23/19, 4:37 PM
Here a short direct live of my uplink #DATV video to #QO100 satellite twitter.com/i/broadcasts/1…
Download the Twitter app
Sent from my iPad
Have 2 432 yagis, a KLM 14C +4 2m, a KLM 18C +4 432mhz with cross boom
and rotor. You must disassemble. Some dishes and dish parts and parts of
other antennas. Email to set up pickup.
eddie (dot) seymour (at) gmail (dot) com
Has anyone from Stateside heard TLM from CAS-6? (not expecting xponder on,
just want to hear its heartbeat)
I see a couple isolated reports from other areas of the world. There was no
signal on the 5 deg EL earlier pass, and now waiting for teh 10;57 a.m.
16:57z pass with an EL of 64 deg here in central USA
I'm guessing that even the beacon may not be on while out of range of China
on this happy occasion I'd like to add some more info about MO-105 and
MO-106, hoping that more people will be tune in and listen to the telemetry
received from the satellites.
SMOG-P (MO-105) is a 1p PocketQube (5x5x5 cm, 250 grams), a fully redundant
tiny satellite with an actual scientific payload: a flying spectrum
analyzer. It measures the scattered RF energy over the UHF band
(specifically, in the digital terrestrial TV band) that can be detected in
ATL-1 (MO-106) is a larger 2p PocketQube featuring the same spectrum
Both satellites transmit almost identical telemetry data. In addition to
basic CW telemetry carrying callsign, battery voltage and temperature,
there is a digital telemetry with variable data rate and coding scheme.
Most frequently, modulation is 1250 or 5000 bps GMSK. The data is encoded
either by the well-known "AO-40" FEC, or a shorter, proprietary variant of
it, but they can also use a more powerful, state-of-art repeat-accumulate
(RA) coding scheme.
Some practical information about receiving the telemetry:
A GUI telemetry receiver is available for Windows and Linux (soon for OS X
as well), and a command line receiver can also be used (Linux only). Both
can be downloaded from
The programs are able to submit the received packets to the central
telemetry data base. This requires a quick registration, the login
credentials can be used with either of the decoders. There are some issues
with the GUI software that hopefully will be resolved within a few days.
These decoders assume either a USB receiver connected through the sound
card or an rtl-sdr receiver.
Thanks to Daniel Estevez, EA4GPZ, a high quality, full decoder and packet
uploader is also available for GNU Radio 3.8 within the out-of-tree module
gr-satellites. For uploading to the received packets, it uses the same
login as the "official" programs do:
This decoder can unleash the full potential of the RA FEC. You'll need to
put an FM demodulator in front of the flowgraph.
I'd be glad to see many submissions on the "Leaderboard" from around
Having many receiving stations around the globe could greatly improve the
global picture the spectrum analyzer payload can offer.