DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
Technical guides for radio reception. From satellite imagery to SDR hardware mods, get the schematics and tutorials you need to capture any signal on VU3DXR
Tropospheric ducting is the ultimate “power-up” for VHF/UHF operators, turning line-of-sight signals into long-haul DX. By understanding how temperature inversions and high-pressure systems create atmospheric waveguides, hams can communicate over hundreds of miles with clarity and ease
VWN Vasanth HF net Reception at 7123.4 khz RX Hardware – MSI SDR Dongle Antenna – 66 Feet EFHW The VWN Vasanth HF net operating on 7123.4 kHz represents part of the vibrant amateur radio community in South Asia. This frequency falls within the 40-meter amateur band, which is ideally suited for regional communications across […]
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 […]
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 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 […]
Belgaum HF net conducted at 7050khz using RSP1 SDR Receiver – MSI.SDR dongle, 66 feet endfeed halfwave antenna Location – Krishnagiri
All India Radio chennai -A DRM digital transmission reception at my listening post in Krishnagiri Receiver – MSI SDR with long wire antenna. Location – Krishnagiri 635108 Equipment – MSI.SDR Dongle Software –Sdruno 1.4 & DREAM Decoder Antenna – 66 feet Longwire antenna tuned for amateur bands Video – AIR RAJKOT DRM Reception