Johnson's Techworld

Having gone through the topic list to be learned for amateur radio examination (ASOC) in India, we will start refreshing our memories by revising mostly what we learned

Usually I don’t hear anything on 15m most of the time. Strong Station on 15m After 10 pm tallies with the Solar Terrestrial Data shown on QRZ.COM which

To start with, we will go through the list of topics to be learned while appearing for the amateur radio licence examination (ASOC) in India. Most of you

Amateur radio is a wonderful hobby in which radio amateurs with a valid license in their country communicate using two way radios with amateur radio operators around the

The concept of antenna aperture is easy to explain if you look at a horn antenna, though it applies to all antennas including a dipole antenna which has

Efficiency of the antenna is the ratio of power radiated by the antenna to the power supplied to the antenna. Antennas can be very simple dipole antennas or

It was the South Jakarta DX Contest 2024 https://sjdxcontest.com/ The time window was consistent with grey line propagation! Signals faded within about one hour.

Three main types of configurations in which transistors are used are the common emitter, common base and common collector. While two leads each are needed for input and