Chinese Amateur Satellite Group (CAMSAT) CEO Alan Kung, BA1DU, tells ARRL that some problems with the precise attitude determination of the newly launched CAS-6 amateur radio satellite have delayed deployment of the antennas. The satellite was to have been put into service within 3 days.
“If the V/UHF antennas are deployed now, additional torque may affect determination of the satellite attitude,” Kung said. “Engineers need to modify and upload the software, which will take some time.” He said that taking into consideration the upcoming long Chinese New Year holiday, the test work is planned to be completed sometime in late February or early March. At that time, VHF/UHF antennas will be deployed, and the amateur radio payload will be available for use.
Kung points out that the satellite’s CW beacon has been turned on, although the antenna has not yet been deployed. “If you have a ‘big ear,’ you may be able to receive weak signal leaked from an undeployed antenna on 145.910 MHz,” he said. “A polyimide cover on the antenna chassis can help to leak some RF signal.”
CAS-6 launched successfully on December 20, piggybacked on a TIANQIN-1 technology test satellite. The microsatellite will be known as CAS-6/TIANQIN-1, and the call sign is BJ1SO. The primary launch payload was the China-Brazil Earth Resources Satellite, CBERS-4A.
CAS-6 is in a sun-synchronous orbit with an apogee of 390 miles. It carries a U/V linear transponder, with a downlink of 145.925, 20 kHz passband (inverted) and an uplink of 435.28 MHz. The CW telemetry beacon is on 145.910 MHz, while 4k9 baud GMSK telemetry will be transmitted on 145.890 MHz.
Hot on the heels of the last post about the 5400km TEP opening on 144 MHz between Argentina and the island of Aruba, we have details of some more cont... Read more
In comments to the FCC, ARRL has argued that radio amateurs be allowed to continue shared operation in the 3.4 GHz band until 5G licensees who purchas... Read more
On the 16th of October 2020, there was a remarkable 3000+ km contact made on the 70cms band between South Africa and St.Helena in the South Atlantic.... Read more
The BF-F8+ is the first UV-5R radio to get a full internal upgrade.It has the updated internal components of the GT-3 but also full backward comp... Read more
“Today I talk about my 5 current picks for Handheld Ham Radios at my Hunting Lease, where we operate off grid. All radios have various features... Read more
Tips on Operating Linear Amateur Radio Satellites (Part 2) Read more
Ham radio & 3D printing – A very portable table stand for the Icom IC-705. Read more
From Hans G0UPL: Great excitement here at QRP Labs Towers just half an hour ago, middle of the QCX challenge (from which I am abstaining this month)... Read more
Callum has created quite an impressive line of antennas that fit various ham radio use cases. Today we look at his portable offering The Expedition an... Read more
The US Coast Guard has invited comments by January 21, 2021, on a proposal to discontinue HF voice watchkeeping. The proposal appeared on No... Read more
“My switch back from iPhone to RFinder happened in this video. A dual band VHF/UHF radio with a newly designed receiver for better sensitivity,... Read more
Connecting the MX-P50 amplifier and LDG Z11 pro tuner to the IC-705. Read more
The Airspy HF+ Discovery sets a new standard in terms of reception performance with extra pre-selectors for all the supported bands and a New DSP Core... Read more