Johnson's Techworld

Basic Types of Antenna Tuners Antenna tuners are used to match the output impedance of the radio to that of the transmission line – antenna system. Short discussions

Practical Implementation of Gamma Match Here is the transcript of the video: Gamma match is an arrangement used to match the impedance in both HF, VHF and UHF

Principle of J Pole Antenna Here is the transcript of the video: J Pole antenna is quite popular among radio amateurs for 2 m and 70 cm bands,

Adding New Satellite EIRSAT-1 to Gpredict for Tracking! Earlier I had installed Gpredict satellite tracking software on Windows. Yesterday I could install it on Ubuntu Linux also, quite

Should You Worry So Much About SWR? I was never worried about SWR or Standing Wave Ratio during my first stint in Amateur Radio in late 1980s. That

Be the First to Record EIRSAT-1 Telemetry! EIRSAT-1 or Educational Irish Research Satellite 1, built by a team of students at University College Dublin is scheduled to be

Exploring the SatNOGS (Satellite Networked Open Ground Station) Project I have been hearing about the SatNOGS (Satellite Networked Open Ground Station) Project for quite some time. It is

Trying out Gpredict for Windows, Satellite Tracking Software Earlier I had known that Gpredict software is available for satellite tracking, orbit prediction, Doppler tracking, antenna rotator control and

Getting Ready to Receive EIRSAT-1 Telemetry Soon After Launch We are happy to note that two of the scientists involved in the EIRSAT-1 project are of VU origin,

Important Antenna Parameters Important antenna parameters of interest to the amateur radio operator are gain, bandwidth, radiation pattern, beamwidth, polarization, impedance and radiation resistance. In addition there are