Johnson's Techworld

Morse Key for  Code Practice From VU2LAU Today I received a Morse Key for Code Practice from VU2LAU as gift. It is a very simple device which uses

Ham Radio Emergency Preparedness for Cyclone Biporjoy Natural disasters are situations in which communication grids can be down due to disruption of power supply and destruction of grid

What is SOTA in Amateur Radio? SOTA stands for Summits on the Air and is an award scheme which encourages radio amateurs to have portable operations from mountainous

What is Maidenhead Grid Locator System in Ham Radio? Earlier location of station in the Q code QTH used by amateur radio operators was mentioned in latitude and

What is VOTA in Amateur Radio? Many of you would have heard of Parks on the Air and Summits on the Air in Amateur Radio. Volunteers On the

What is Parks on The Air in Amateur Radio? Parks on the Air is an amateur radio operating award program run by a nonprofit organization for encouraging international

Homebrewing VHF Yagi Part 3, Quite Tough! You may be wondering why the continuation part of the series on homebrewing seven element VHF Yagi was delayed. Simple reason

What are Q codes in amateur radio? Q codes are a series of three letter codes which are used mostly during CW or Morse Code transmissions. But they

QRM Elimination by Antenna Phasing and Noise Cancelling Though the original meaning of QRM was “Are you being interfered with” and QRN was “Are the atmospherics strong”, in

What is a Common Mode Choke in Amateur Radio? Coaxial cable is often used as the feedline between an Amateur Radio and the antenna. Unlike an open line