Johnson's Techworld

Just installed Gpredict satellite tracking software on my laptop. It has provision for both radio control and antenna rotator control. I have not tested them out as I

There was a pass of about 11 degrees maximum elevation in this region just now and I tried with my 80m inverted V dipole antenna and RTL-SDR Blog

‘Lonely Pass’ of International Space Station, is one in which we do not hear anyone else other than ourselves during a pass of international space station. It is

Here is a demo of listening to VU2CSR VHF net using RTL-SDR and two HF antennas. Initially I could not hear anything because the default RF gain was

I am using my multi-band fan dipole antenna to listen to HF bands and AM broadcasts. Installation of software was posted earlier in detail.

I have used the detailed instructions at https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/ for the installation of SDRSharp software in my laptop and it went on well. I am documenting the steps here.

Bought an RTL-SDR V4 from a VU ham friend. It is a full kit with VHF and UHF dipole antennas, bias-T, tripod, SMA cable and connectors for mounting

Setting up wireless peripherals and WiFi for Raspberry Pi 5. Yesterday I had installed the Raspberry Pi 5 OS. Now I am connecting wireless mouse and keyboard as

When I started using the Raspberry Pi 5 after installing the Raspberry Pi 5 OS, I thought that the board is warming up, though I did not touch

imager_1.8.5.exe downloaded into my laptop from https://www.raspberrypi.com/software/ We will go through the steps of preparing the 128GB microSD card for booting Raspberry Pi OS and booting it on