PW-Sat to launch in January

PW-Sat, a 1U CubeSat to be launched on the first VEGA flight in January, will carry a 435 to 145 MHz Amateur Radio transponder.

The single channel transponder will operate in a similar way to the amateur satellite AO-16. The uplink on 435.020 MHz will be FM and the downlink on 145.900 MHz will use the BPSK telemetry beacon transmitter to produce Double Sideband (DSB) that can be received on an SSB radio.

PW-Sat should be launched into a 1450 by 300 km 71 degree orbit and may be expected to have a lifetime of about 4 years before re-entry. It was built by students of Warsaw University of Technology in cooperation with the Space Research Centre and will be Poland’s first satellite.

PW-Sat has five modes of operation:
1. Receive only mode – no downlink
2. Beacon CW mode – Downlink On-Off Keying (OOK) CW (1kHz) 12 WPM on 145.900 MHz
3. Beacon BPSK mode – Downlink BPSK (3 kHz) 1200 bps AX25 (1 frame on 20 sec) on 145.900 MHz
4. Control communication mode. Downlink BPSK (3 kHz) 1200 bps AX25 on 145.900 MHz
5. Voice Repeater mode (aka “AO-16” mode) – Uplink 435.020 MHz FM (15 kHz) Downlink 145.900 DSB (3 kHz)

For more information on PW-Sat in Google English see 

Vega to Launch Amateur Radio Satellites

IARU Amateur satellite frequency co-ordination panel pages hosted by AMSAT-UK

AO-16 FM-DSB transponder

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