In our April 2022 SARTS meeting Lih Wei, 9V1LW, our payload specialist, gave an interesting report of the last balloon experiment (BEAR 4) and an outlook to BEAR 5.
by 9V1DT, April 2021
A short guide by Sampath how to prepare for and get the FCC license. The US FCC license is well recognized world wide and sometimes can be helpful to get a visitor’s ham radio license abroad.
One page guide as pdf (9V1YP):
by Philip Lai, 9V1PL
This article was motivated by my fellow HAMs from the satellite group. Based on my success with the application of the concept of EME on 2 m to our SARTS Repeater without line of sight, I hope this write up can help those in the hobby with similar challenges to explore the concept of EME.
Earth-Moon-Earth communication (EME), also known as moon bounce, is a radio communications technique, which relies on the propagation of radio waves from an earth-based transmitter directed via reflection from the surface of the moon back to an earth-based receiver.
The challenge of my location (QTH)
I am located at the South Eastern Coast of Singapore, an apartment dweller with low elevation of 25 m facing south west. The distance to the Singapore VHF repeater is approximately 12 km. The small balcony with an opening of just slightly over 100 degrees is surrounded by tall buildings and makes it difficult for me to reach the repeater located at Dover.
For many months, when I first started as a new HAM, all I could hear was noise from my handheld (HT).
Each time I pushed the PTT, I couldn’t trigger the repeater, but even when I could trigger the repeater, I couldn’t hold it transmitting. It was frustrating, I fully understand, if you are facing similar challenges.Continue reading Applying the Concept of Earth-Moon-Earth (EME)
9V1KG, Klaus, Feb 2021
The presentation gives an overview on SDRs under $ 200 and active antennas for the HF range, and how to setup a simple and low budget SWL and monitoring station.
Received on 160 m with active loop and RTL SDR with up-converter.
Comparison between signals received on 80 m (YB2BFF) with ICOM 7300 and 5 m whip antenna with loading coil, and RTL-SDR with up-converter, active loop antenna and GQRX software receiver.
PSK reporter link to see current stations received.