Mar 5, 2022 at 23:15 SGT, BEAR-4 was launched from Singapore.
It carried an APRS beacon on 144.390 MHz, and also sent an SSTV image (ROBOT36 format) on 145.500 MHz in 5 min intervals.
SSTV image 
Launch
Tag: event
BEAR – Balloon Experiments with Amateur Radio
During the October online SARTS meeting, Chew, 9V1YP, gave a very interesting presentation about the recent two weather balloon experiments.
2021 Oceania DX (OCDX) Contest
The phone section of the 76th 2021 OCDX starts at 06:00 Z on Saturday, October 2nd, and ends at 06:00 Z on Sunday, October 3rd.
OCDX promotes HF contacts to and from stations in the Oceania region as well as contacts between stations inside Oceania. DX transmitting entrants contact as many Oceania stations as possible.
Prefixes are multipliers, entries on individual bands are supported. Contest exchanges are signal reports plus a serial number, starting at 001. The deadline for submitting logs is 31 October 2021.
Current rules can be downloaded from here.
Balloon Experiments – 9V1UP-11
Saturday 4 Sep 2021 23:00H / 15:00Z. APRS on 144.390 BEACON only.
Join the fun hunting for the APRS signals after launch. The balloon is estimated to be in the air for a few hours. Signals are likely to be received in the region: Singapore, Johor, and Riau. For the past few months, a team of Singapore hams have worked on a project to launch a weather balloon carrying amateur radio. The flight system consists of a 600g weather balloon filled with Helium (industrial grade) and the payload is assembled from a LightAPRS tracker. Approval of flight involved “no objection” from CAAS, RSAF and IMDA, and Saturday’s flight requires release clearance from RSAF duty controller. For launch, two teams will be deployed in the western side of Singapore. The launch team will attend to the lift off while the remote monitoring team will receive and iGate the APRS signals.
Tracker: https://9v1up.ragulbalaji.com/tracker/
Updates: Ham Radio SG on Facebook
The project team is busy preparing for the launch and may not have time to answer questions that you may have. A presentation will share various aspects of the project at the next SARTS meeting. Come this Saturday, share in comments when you receive 9V1UP-11, stating your QTH and telemetry.
Source: 9V1YP
IOTA Contest from Pulau Ubin
From July 28th to 29th SARTS members activated Pulau Ubin, IOTA AS-019.
