Hej!
Dagens nät på 3740 klockan 10.00
Deltagare
SM0AIG
SM4EFW
SM4JLX
SM5HL
SM6NZV
SM7WSJ
Inte så mycket att ta upp för tillfället men vi kör på.
*Rymdfärjans sista nedfärd (sett från ISS)
http://www.nasa.gov/multimedia/imagegallery/image_feature_2014.html
*ARISSat-1 närmar sig aktivering.
ARISSat-1/KEDR Project Manager Gould Smith, WA4SXM said this week the latest
status, discussed during the International ARISS
teleconference Sergey Samburov,
RV3DR announced the ARISSat battery will be charged late July and a test of
the
system will be conducted on the ISS from 1915 UTC
30 July to about 1200-1400 UTC
31 July.
During the test ARISSat-1 will be in LOW power mode, this means that it will
transmit about 40 seconds and then shut down for
2 minutes and then transmit for
40 seconds, etc. The standard ARISSat-1/KEDR 2m downlink band plan should be
transmitted. Additionally, the FM signal also downlinked on 437.55 MHz.
As to the date of deployment, Gould summarized,
“The deployment date for ARISSat
is still subject to change. As of July 14 we are looking at a 3 Aug 2011
date
for EVA 29 and the ARISSat-1/KEDR deployment. The
ARISSat/KEDR deployment is the
first task of the EVA, so it will occur fairly soon after the EVA begins. We
will let everyone know more as we know more.”
145.950 MHz FM Downlink:
————————
FM transmissions will cycle between a voice ID as RS01S, select tele-
metry values, 24 international greeting messages in 15 languages and
SSTV images. One of the messages will be a conversation between Yuri
Gagarin and ground control. See the next news item for pointers to get
your station ready to receive the SSTV images.
435 MHz – 145 MHz Linear Transponder:
————————————-
The linear transponder will operate in Mode U/V (70 cm Up, 2m Down).
It is an 16 KHz wide inverting passband and the convention will be to
TX LSB on the 435 MHz uplink and RX USB on the 145 MHz downlink. This
mode is designed to work with low power transmitters and omni antenna.
145.919 MHz/145.939 MHz CW Beacon:
———————————-
The CW transmissions will be callsign ID RS01S, select telemetry, and
callsigns of people actively involved with the ARISS program.
145.920 MHz SSB BPSK-1000 Telemetry:
————————————
The BPSK transmissions will feature a new 1kBPSK protocol developed
by Phil Karn, KA9Q to be readable in low signal level conditions.
The BPSK data will transmit satellite telemetry.
The ARISSat-1/KEDR BPSK-1000 downlink is transmitted in SSB mode on
145.920 MHz. When the CW2 beacon on 145.919 MHz is active this
indicates that the BPSK-1000 format is being transmitted. If the
CW1 beacon on 145.939 MHz is active this indicates the backup of
BPSK-400 format is being transmitted.
Transmitting at 100 mW, both BPSK rates include Forward Error
Correction (FEC) and it is expected that modest quarter-wave
antennas with low-loss coaxial cable will provide sufficient
signal strength for decoding and display by the ARISSatTLM
software.
Download the Windows ARISSatTLM free ground station soundcard
demodulator and display software:
http://www.arissattlm.org/download/ARISSatTLM_050_Setup.exe
Download the Mac ARISSatTLM software:
http://www.arissattlm.org/download/ARISSATTLM.zip
The ARISSatTLM software user guide is available:
http://tinyurl.com/42uhtyf (amsat.org)
Get your color ARISSat-1/KEDR Frequency Guide:
http://tinyurl.com/4t497t2 (amsat.org)
ARISSat-1/KEDR Presentation Slides (~1MB)
http://tinyurl.com/4n4pzkm (amsat.org)
ARISSat-1/KEDR Dayton Presentation Slides
http://tinyurl.com/6zrfmzv (amsat.org)
Follow ARISSat-1/RadioSkaf-V on Twitter:
http://twitter.com/#!/arissat1
Hoppas någon klarar höra den vid provaktiveringen.
73 Håkan SM7WSJ