Johnson's Techworld

I was a regular AM or Amplitude Modulation operator in the initial days of my ham radio activity. Started by adding a modulator to the 7W VU2VWN QRP

Another session of ham radio exam preparation is here, with multiple choice questions followed by discussion with illustrations. The Transformer works on the principle ofa) Self Inductance b)

Actually it is the first time I am hearing about 6m EME, that too a DXpedition. Often I have heard of 432 MHz EME and EME on higher

Winter is approaching and we expect better contacts on lower bands like 80m and 160m. Only downside for propagation on lower bands now is the solar activity. With

Which layer of ionosphere disappears during nighttime?a) Fb) Ec) Dd) C These are the layers of ionosphere, within the atmosphere, by day time and night time. Lower most

Early morning pass of International Space Station in this region starting at 5.44 am IST was a Western pass and I was looking for the AMSAT-India demo station

This is a magnified view of a tiny ceramic capacitor, which we often use in electronic circuits. I got this from my collection for making a Morse Code

HamFest India 2025 is scheduled to start tomorrow at Goa. AMSAT-India has a lot of programs in the pipeline for the HamFest including live demo of satellite communications

I was always wondering two things about solar panels on rooftops of nearby homes. One was why it is kept at an elevation rather than flat on the

Python is a popular high-level, general-purpose programming language used by developers. Currently it is the most important programming language being learned by students of Class XI and XII