India MicroSat ANUSAT


The new MicroSat of India was launched on 20 Apr 2009.

Launch : 20 Apr 2009
Vehicle: PSLV-CA
Site   : Sr SLP
Main Payload: RISAT-2

Satellite   India Operator    Mass    Mode
---------   ---------------   -----   ----
RISAT-2     ISRO              300kg
ANUSAT      Anna University    50kg   V/U
---------   ---------------   -----   ----

RISAT-2 (Radar Imaging Satellite 2)
ANUSAT  (Anna University Microsatellite)

Telecommand : VHF(PCM/FSK/AM), 100 bits/sec, 149.2 MHz
Telemetry   : VHF(PCM/FSK/AM), 256 bits/sec, 137.4 MHz
Store and Forward : VHF 145.8 MHz Uplink
                    UHF 435.0 MHz Downlink

ANUSAT
1 34808U 09019B   09113.18398593 -.00000289  00000-0  00000+0 0   127
2 34808 041.2102 148.9969 0109770 026.6096 083.2692 15.29388015   488

http://www.isro.org/pressrelease/Apr20_2009.htm
http://www.annauniv.edu/anusatspecs.pdf
http://beswaminathan.googlepages.com/Anusat.pdf
http://bsidharth1205.googlepages.com/research


ANUSAT received!

I heard and saved ANUSAT carrier wave (2.8MB).
This is a very very weak signal with a doppler.

ANUSAT, 13:00-13:11UTC 24 Apr 2009, Mel 57, 137.400MHz, 2.8MB
http://www.ne.jp/asahi/hamradio/je9pel/90424anu.wav





ANUSAT received system

Antenna     : APT-2CP (Hamtronics)
Receiver    : R139    (Hamtronics)
Preamplifier: WP-3    (GAREX)

Channel 1,  137.100 MHz
Channel 2,  137.400 MHz
Channel 3,  137.500 MHz
Channel 4,  137.620 MHz
Channel 5,  137.9125MHz



137-138MHz preamplifier
  

http://www.ne.jp/asahi/hamradio/je9pel/noaapice.htm



ANUSAT spectrogram

ANUSAT, 2200UTC 25/04/2009, 11 deg pass,  captured by DK3WN
very strong and no modulation carrier at 137.400MHz



How to set Display Width in Spectrogram Ver16.0

(1) Preferences - Analysis Controls - Manual Controls
(2) Function - F1 Scan Input
(3) Scroll Display Width (ex. 5 min) - OK
(4) Function - F7 Spectrum Color Scale
(5) Spectrum Level Min (ex. -40dB)
http://www.visualizationsoftware.com/gram.html


ANUSAT, 08:53-09:04UTC 09May2009, Mel 29deg, 137.400MHz, captured by JE9PEL



Spectrogram settings



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