DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
The Reception category focuses on pulling weak signals out of the noise using smart antennas, low‑noise front‑ends, and modern SDR tools. It covers topics such as HF broadcast listening, weather satellite reception on 137 MHz, ADS‑B and aircraft tracking, WebSDR resources across India and Asia, and general SWL (shortwave listening) techniques. You’ll find practical antenna designs, preamplifier ideas, and receiver setups that improve copy without requiring huge towers or expensive commercial equipment.
NOAA19 weather satellite reception with experimental v dipole antenna Date – 18.01.2022 Location – Krishnagiri, Tamilnadu, India Receiving Hardware – RTL SDR with experimental v dipole antenna. NOAA 18 and NOAA 19 weather satellites provide free accessible weather data continuously through Automatic Picture Transmission at 137.9125 MHz and 137.1000 MHz frequencies. RTL-SDR TUTORIAL: RECEIVING NOAA […]
KTWR DRM Transmission Reception Day – 16.01.2022,sunday, 4.00PM IST,10.30 UTC 15200 kHz DRM Mode Location – Krishnagiri 635108 Equipment – MSI.SDR Dongle Software -Sdruno 1.4 & DREAM Decoder Antenna – 66 feet longwire antenna tuned for amateur bands Operating from their transmitting facility on the island of Guam, KTWR utilizes powerful shortwave transmitters to […]
DIY – 137 Mhz V-dipole antenna for weather satellites reception D.Prabakaran VU3DXR A V-dipole for NOAA weather satellites on 137 MHz has been published by 9A4QV and it seems to get very good results. The designed antenna works at frequency 137 Mhz with omnidirectional radiation pattern. The length of the each leg should include the […]
AIR MUMBAI DRM Reception in my listening post at Krishnagiri(TN) using MSI SDR dongle. KTWR Dxers diary DRM Reception with same set up available here.
WebSDR India Location – Bengaluru, India | http://106.51.131.254:8073/ Windows: Firefox, Chrome & Edge work; IE does not work. Mac & Linux: Safari, Firefox, Chrome & Opera should work fine. Open and close the panels by using the circled arrows at the top right corner. You can click and/or drag almost anywhere on the page […]
Belgaum HF net reception monitored in my ubitx3 Receiver – Ubitx v3 Transceiver, 66 ft Endfed Halfwave antenna Belgaum’s strategic location in northern Karnataka, near the borders of Maharashtra and Goa, makes it an ideal hub for regional HF communications. The city’s elevated geography and relatively low RF noise environment contribute to excellent propagation conditions, […]
Belgaum net in 7050 khz Monitored in my GEK 2X HF Transceiver at my krishnagiri qth. The Belgaum Net on 7.050 MHz is one of the popular morning HF amateur radio nets in India, operating alongside other well-known nets like the Charminar Net on 7.080 MHz. These nets typically run during the early morning […]
The GEK 2x SSB Transceiver is a Mid range high performance Low-noise, low cost SSB HF transceiver. The local oscillator is stable DDS VFO and DDS BFO/Carriers oscillator. The Power amplifier is designed as a push-pull Mitsubishi the latest generation of 12V-30MHz Silicon MOSFET Power Transistor. The RD06HHF1 is used in the pre driver and […]