Johnson's Techworld

Ever since I came back to HF in January 2024, my friends have been advising me to go for a linear amplifier. In VU land, the General Class

In a response to a post in the HamSCI (Ham Radio Science Citizen Investigation) Google Group, N8SBE mentioned that 700-800 MHz is quite useful for first responders as it

When I started using computers long back, mouse had only two buttons, a left and a right button. Then came three button mouse with an extra scroll button.

Yesterday I came across a piece of PVC pipe brought by the plumber who told me that it is ASTM. That prompted a Google search as usual and

Recently when I read about IC-7760 launched at the Tokyo Ham Fair, it was mentioned that it can be operated over a home local area network. Little did

Radio amateurs are very fond of getting signal reports from whichever station they work. When I started off in 1985, I did not have any S meter in

Inferential meters are those which infer the flow while not measuring the flow directly. So they have to measure some other parameter instead. Magnetic inferential flow meters need

Yesterday there was a message on Amsat Bulletin Board mentioning that: ‘Astronauts “off-duty” tomorrow … MIGHT be some FM simplex communications happening!’. So I decided to listen keenly

VOACAP or Voice of America Coverage Analysis Program for HF Propagation Prediction is a free software, originally developed for Voice of America by Institute for Telecommunication Sciences, the

Raspberry Pi is a series of small single board computers developed by Raspberry Pi Foundation along with Broadcom. Raspberry Pi Foundation is a British charity and company having