Listen for New Sats using Web Receiver

You can listen for the new Amateur Radio satellites, launched Friday Jan 23, by using a Web based Software Defined Radio (SDR). Some of the Radio Amateurs who were involved in the very successful Delfi-C3 / DO-64 Amateur Radio satellite have made available a WebSDR receiver that listeners around the world can use to receive signals from the new Amateur Radio satellites.

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ESEO Project – latest news!

The ESEO project is moving ahead! AMSAT-UK is getting ready to support it with on board transponder and telemetry equipment. The latest news item on the ESA Education website ( gives up to date information about the progress made so far.

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Hokkaido Institute of Technology CubeSat

Hokkaido Institute of Technology’s HIT-SAT satellite has joined several other CubeSats carrying Amateur Radio payloads in space. The tiny satellite launched successfully September 23 (Japan Standard Time) from the Uchinoura Space Center in Japan, and its CW telemetry was copied around the world on the satellite’s initial orbits. Over the weekend, HIT-SAT’s CW telemetry was halted as a power-saving measure during attitude control procedures, and it remained silent after attitude control should have ended. But on September 27, ground controllers were able to restore the CW telemetry.

“Although the cause was still unknown, we hope the transmission of CW continues normally,” the HIT-SAT team said on its Web site. “We appreciate the cooperation and help of radio amateurs all over the world. Please hear the beat of our satellite’s heart.” HIT-SAT’s FM packet transmitter has been operating normally from the time the spacecraft reached orbit, and ground controllers have been able to obtain telemetry data from it.

Like other university-built CubeSats, HIT-SAT was constructed using mostly off-the-shelf parts. The 1200 bps FM packet downlink is on 437.425 MHz, while the CW telemetry downlink is on 437.275 with a transmitter power of 100 mW. The CubeSat uses a VHF uplink. The HIT-SAT team is seeking reception reports, including audio files. The satellite’s call sign is JR8YJT.

Once it’s fully operational, HIT-SAT will permit Earth station operators to request certain parameters by transmitting DTMF commands on the 145.980 MHz uplink. The satellite can report back time/date, temperature and power supply voltages and thank the Earth station by call sign. Only HIT-SAT ground station controllers can access the satellite at this point, however.

The diminutive satellite is a project of the Hokkaido Institute of Technology’s ham radio club. HIT-SAT hitchhiked on the M-V-7 vehicle that carried the Solar-B satellite into orbit. The satellite is in a sun synchronous orbit with an orbital altitude of 250 km at perigee and 600 km at apogee and an inclination of 97.79 degrees. A 12-cm square cube, HIT-SAT weighs 2.2 kg.

AMSAT Project Eagle

AMSAT-NA has announced it’s revamping the design of its high-Earth orbit (HEO) Project Eagle satellite, currently in the development stages The next generation satellite will take maximum advantage of software-defined transponder (SDX) technology to offer a broader range of easily accessible Amateur Radio payloads. The AMSAT Board of Directors okayed the Eagle upgrade plans during the 2006 AMSAT-NA Space Symposium and Annual Meeting held October 6-8 in San Francisco. Eagle Project Manager Jim Sanford, WB4GCS, outlined the changes at his Space Symposium forum October 7.

“The structure which we have been presenting for several years is not going to meet our mission needs,” Sanford explained. “We have moved on to a later structure.”

Under the new plan, Sanford says, Eagle’s communications payloads will include a mode U/V linear transponder for SSB, CW and other modes. A second SSB/CW transponder will uplink on L band (1.2 GHz) and downlink on S1 band (2.4 GHz). Both would be usable over 75 percent of the satellite’s orbit by an AO-13 or AO-40-capable ground station, AMSAT says.

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AO-51 satellite back on track

AO-51 satellite appears back on track after software reset:

The AO-51 Command Team says the satellite will remain in V/U FM repeater and FM 9k6 digital, V/U Pacsat Broadcast Protocol BBS (PBP BBS) mode “for a number of days” while the team monitors its operation.

On June 26 Echo experienced a software reset, and, following some analysis, the Command Team reloaded the software.

“I spent a good deal of my holiday time this week and weekend at home in order to download the data and then reload the satellite software to get it back up and running asap,” said the AO-51 Command Team’s Mike Kingery, KE5AZN. He said the AO-51 Software Team reviewed data downloaded from the satellite memory after the reset but found nothing out of the ordinary.

AO-51 went into orbit June 29, 2004


HAMSAT (or VUsat) is the latest Amateur Radio satellite in orbit. It is India’s first.

“We congratulate all who have worked for the hamsat and its successful launch,” said Sandip Shah, VU3SXE, AMSAT-India’s treasurer, who was at the control center in Bangalore, India, for the May 5 launch. The satellite went aloft from the Satish Dhawan Space Centre (SDSC) SHAR in Sriharikota.

Going into space with the 42.5 kg HAMSAT was the primary payload–the 1560 kg Indian remote sensing satellite, CARTOSAT-1. The spacecraft were placed into polar sun synchronous orbits at an altitude of 632 x 621 km with an equatorial inclination of 97.8 degrees.
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P3E satellite design

AMSAT-DL reviews P3E satellite design: An international team gathered in Marburg, Germany, in late January to review progress on the Phase 3 Express (P3E) Amateur Radio satellite–essentially a scaled-down and less-complex version of the now-defunct AO-40.

The meeting focused on the design of the integrated housekeeping unit (IHU-3) computer and the “CAN-Do interface.” AMSAT-NA is a partner in the P3E high-altitude, elliptical-orbit satellite, a prelude to the ambitious Mars-orbiting P5A spacecraft, and AMSAT-NA

President Rick Hambly, W2GPS, was among those attending the gathering January 26-30. Being developed under AMSAT-DL leadership, P3E will provide a test bench for technology under development for the subsequent Mars mission. Launch is planned sometime before the end of 2006. The P3E satellite will offer both analog and digital communication on VHF through microwave.

There’s more information on P3E and P5A on the AMSAT-DL Web site