Electronics and Technical resources from vu3dxr
7MHz CW / AM QRP Transmitter – D.Prabakaran The circuit of a 7MHz C W / A M QRP transmitter described here can be used to transmit either CW or audio frequency modulated signal over a 7MHz carrier. The carrier frequency oscillator is crystal controlled using 7MHz crystal in its fundamental mode. The tank circuit …
VWN Vasanth HF net Reception at 7123.4 khz RX Hardware – MSI SDR Dongle Antenna – 66 Feet EFHW
Charminar net at 7080khz RX Hardware – MSI SDR Dongle Antenna – 66 Feet EFHW VWN Vasanth HFNET reception with same setup
Beautiful images received from NOAA19 weather satellite with experimental V dipole antenna Location – Krishnagiri, Tamilnadu, India Receiving Hardware – RTL SDR with experimental v dipole antenna. Video – NOAA19 weather satellite reception with experimental V dipole antenna
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 …
An NE567 tone decoder, tuned to the transceiver`s CW offset frequency, ensures that the transceiver will be transmitting on the same frequency as the received CW signal. Simply tune the transceiver so that the LED lights. Eight to 13 Vdc is required; this can be taken from the transceiver supply or an extra battery. Audio …
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 onlya few microwatts. The LCD thus saves power by a factor of approximately 1000. Checking an LED is as simple as checking a semiconductor …
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
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.