Johnson's Techworld

Noise is an important problem faced by amateur radio operators, especially on the high frequency bands. Noise level is always on the increase in the urban areas with

I was told by a VU ham friend that in order to experiment with loaded coil dipole antennas, it is essential to have an LCR meter. It was

Couple of days back I had posted about USB-C and USB-C PD (Power Delivery) cables and mentioned that though they have 24 pin connectors, they have only 16

When I checked for Google Trends for Amateur Radio, I found that Yaesu FT-60R Dual Band Handheld 5W VHF/UHF Amateur Radio Transceiver as the top trending topic with

As most of us are aware, USB is a data transfer protocol which has been revised from the original Universal Serial Bus to the latest USB4, with data

Radiation-hardened-by-design (RHBD) is a methodology that uses circuit techniques to make microcircuits more resilient to radiation as required at outer space in case of amateur radio satellites. In

VU2ESE has announced the launch of zBitx on the BITX group. It is available for purchase at http://www.hfsignals.com/ and delivery will start in February 2025. According to VU2ESE,

LCR meter is an instrument used to measure inductance (L), capacitance (C) and resistance (R) as the name indicates. They can measure the impedance to a sinusoidal waveform

Caution: VU2XTO has informed that high power with a linear amplifier should not be delivered to this loaded coil dipole as it can result in heating of coils.

A guide is presented to help you build a functional ham radio station with a limited budget. You will learn how to choose the right equipment, build antennas,