Circuit – FM Bandstop Filter for RTL SDR
FM Bandstop Filter for RTL SDR The given FM band stop filter is nothing more than a simple Band stop…
Month: January 2022
Circuits – Simple zener diode tester
Simple zener diode tester Ever found yourself with a handful of zener diodes, wondering if they’re still good or what…
DIY – Making printed circuit boards
Making printed circuit boards There are many ways to produce your own printed circuit boards. Small boards for DC switching…
Video – Colombo International Radio Tamil service Inaugural day transmissions
Colombo International Radio Tamil service – Inaugural day transmissions Frequency – 873khz Time – 7.00 am to 8.00 am The…
Circuits – 7MHz CW / AM QRP Transmitter
7MHz CW / AM QRP Transmitter The circuit of a 7MHz CW / AM QRP transmitter described here can be…
Video – VWN Vasanth HF net Reception
VWN Vasanth HF net Reception at 7123.4 khz RX Hardware – MSI SDR Dongle Antenna – 66 Feet EFHW The…
Video – Charminar net at 7080khz
Charminar net at 7080khz RX Hardware – MSI SDR Dongle Antenna – 66 Feet EFHW The Charminar Net operating on…
Beautiful images received from NOAA19 weather satellite with experimental V dipole antenna
Beautiful images received from NOAA19 weather satellite with experimental V dipole antenna Location – Krishnagiri, Tamilnadu, India Receiving Hardware –…
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 –…
Circuits – Offset tuning indicator for CW
An NE567 tone decoder, tuned to the transceiver`s CW offset frequency, ensures that the transceiver will be transmitting on the…