DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
Manufacturers of electronic equipment use LCDs for calculators, watches, mini-videogames, and pagers, for example. In comparison with LED-based displays,which consume power on the order of tens of milliwatts, an LCD consumes only a few microwatts. The LCD thus saves power by a factor of approximately 1000. Checking an LED is as simple as checking a […]
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.
All India Radio – Rajkot DRM channel 1071 khz – medium wave band Reception noted in my MSI SDR dongle…good signal with occasional break in audio. Location – Krishnagiri 635108 Equipment – MSI.SDR Dongle Software –Sdruno 1.4 & DREAM Decoder Antenna – 66 feet Longwire antenna tuned for amateur bands
This white led torch circuit provides an effective solution for powering white LEDs. It is ideal for flashlights, emergency lighting, and various other applications. The circuit operates efficiently from one or two primary cell batteries. The core of the circuit involves a transistor (Q1) and a tapped inductor, forming a blocking oscillator. When the power […]
All about GPS – Part II Nuts Volts Magazine Author – D.Prabakaran https://online.flippingbook.com/view/1004921754/
Digital Audio Broadcasting: Looking into the future Digital Audio Broadcasting: Looking to the Future A World Perspective – And Status in the USABy D. Prabakaran Digital Audio Broadcasting (DAB) has the potential to transform the traditional audio-based radio medium into a full-fledged multimedia system, particularly suited to bringing digital information to the general public, […]
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, […]