Postings

BEAR-6 Successfully Launched

On Sunday, Aug 28th, early in the morning the 6th Amateur Radio Weather Balloon was successfully launched from Singapore. Balloon Experiments with Amateur Radio (BEAR-6) with the call sign 9V1UP-11 lifted off at 6:50 SGT.

BEAR-6
SSTV picture transmitted from BEAR-6

Payload DRA818V with APRS telemetry – location, altitude, temperature and pressure, on 144.39 MHz and with SSTV (Robot 36) on 145.55 MHz was assembled by 9V1LW. The BEAR-6 team members were Lih Wei 9V1LW, Fu Hang, 9V1FH, Choong, 9V1CV and Chew, 9V1YP.

It went to a height above 32 km and speed exceeded 90 km/h a one point.The flight ended with the loss of signal at 10:33.

Tracking the balloon with APRS

RPi4 PSU (Computer/IT)

Only 2 left!

Item to sell: RPi4 PSU
Category: Computer/IT

Description: Raspberry Pi 4 Power Supply, 15 W (5 VDC, 3 A)

IN: 230 VAC via UK plug
OUT: 5 VDC via USB Type C plug
Power: 15 W

More than one unit is available. NEW (PSU has been tested).

Age: 1 to 3 years.

Condition: new.

Price: SGD 8 negotiable.

Please contact: Stephan 9V1LH
via Telegram: DG1BGS.

Delivery: self collect

As an interested buyer please contact the seller using the contact information given above. As a seller please leave a comment below, once the item was sold.

DV4Mini UHF (Accessory)

Item to sell: DV4Mini UHF
Category: Accessory

Description: DV4Mini UHF v1 USB-Dongle in ALUMINIUM CASE

Digital Hotspot for
– DMR (DMR+ ipsc2 and Brandmeister)
– DSTAR
– FUSION C4FM
– APCO P25
– NXDN / IDAS
– dPMR

Currently installed Firmware: v1.77
Supported OS: Windows, Linux (via Emulator)
Software download: xreflector.net/Download/DV4mini/inhalt.html

Age: 3 to 5 years.

Condition: used and fully functional.

Price: SGD 80 fixed.

Please contact: Stephan 9V1LH
via Telegram: DG1BGS.

Delivery: self collect

As an interested buyer please contact the seller using the contact information given above. As a seller please leave a comment below, once the item was sold.

D2 SpectrumAnalyser (Meter)

Item to sell: D2 SpectrumAnalyser
Category: Meter

Description: D6 Spectrum Analyser with Tracking Generator

[Specs]
– Width of Frequency Band: 33 MHz – 4400 MHz
– Power accuracy: 10%
– Input sensitivity: <= 10 dBm
– Sweep Dynamic Logarithmic Ratio: > 50 dB
– Scan speed: >= 800dots / second
– Standby Power assumption: <= 100 mA
– Swept-Frequency Power assumption: <= 350 mA Sweep
– Interface + Power: USB

[Software]
NWT4.11.09
Supported OS: WinXP, Win7 32 Bit, Win7 64 Bit, (Win10 possible, but officially not supported)

Comprehensive test data can be found here: vma-satellite.blogspot.com/2019/04/new-simple-spectrum-analyzer-device.html

Age: 1 to 3 years.

Condition: Like NEW

Price: SGD 55 fixed.

Please contact: Stephan 9V1LH
via Telegram: DG1BGS.

Delivery: self collect

As an interested buyer please contact the seller using the contact information given above. As a seller please leave a comment below, once the item was sold.

MegActiv MA305 (Antenna)

Item to sell: MegActiv MA305
Category: Antenna

Description: Wideband Active Antenna

Model: Bonito MegActiv MA305
Frequency range: 9 kHz- 300 MHz
Power in: 13.8 VDC via Anderson PowerPole or 5 VDC via USB cable
Dimensions incl radiator: 295 x 58 x 38 mm (11,61 x 2,28 x 1,5 inch)

incl. mounting bracket

The antenna has as well been discussed on this YouTube channel: www.youtube.com/results?search_query=oxford+shortwave+log+MegActive+MA305

Age: 3 to 5 years.

Condition: used and fully functional.

Price: SGD 220 negotiable.

Please contact: Stephan 9V1LH
via Telegram: DG1BGS.

Delivery: self collect

As an interested buyer please contact the seller using the contact information given above. As a seller please leave a comment below, once the item was sold.

BEAR-5 Latest Update

Balloon Experiment with Amateur Radio BEAR-5 is expected to be airborne on Sunday, 12th Jun 2022 from around 06:45 SGT. CAAS, RSAF and IMDA have approved our application to launch. Payload DRA818V is assembled by 9V1LW and 9V1CV.

APRS on 144.390 MHz, will transmit telemetry: location, altitude, temperature and pressure.

On reaching higher altitude, every 5 minutes SSTV on 145.500 MHz, transmitting a virtual postcard of the balloon.