Skip Zone

Skip Zone: Everything You Need to Know

Extracted from Wikipedia: Skip zone. A skip zone also called a silent zone or zone of silence is a region where a radio transmission can not be received located between regions both nearer and further from … Read More

2 meters

2 Meter Amateur Radio Band: Everything You Need to Know

Other VHF/UHF/Microwave wiki pages: 13 centimeters, 9 centimeters, 6 centimeters, 3 centimeters 1.25 centimeters and Bands above 24GHz. 2 meters is probably the most heavily-used amateur band in the United States. Most newly-licensed Technician-class operators get their start in amateur radio on … Read More

Radiated Power Measurement

Radiated Power Measurement

Power Ratio dBm or dBmW The power compared to a 1 milliwatt (1mW) source, expressed in decibels ( dB) Formula: <math> x = 10 \log_{10}(P/1 \ \mathrm{mW}) \, </math> Where P is the power in watts … Read More

160 meters

Top Band -160 Meter Radio Propagation

160 meters, often known as Top Band, is technically a Medium Frequency (MF) band, the only one licensed to amateurs. It is slightly higher in frequency than the broadcast band (540 kHz – 1600 kHz) … Read More

International Events

The International Lighthouse & Lightship Weekend

ILLW – INTERNATIONAL LIGHTHOUSE/LIGHTSHIP WEEKEND The International Lighthouse/Lightship Weekend (ILLW) came into being in 1993 from the Scottish Northern Lighthouses Award[1] weekend by Mike Dalrymple, GM4SUC, a member of the Ayr Amateur Radio Group, Scotland. See … Read More

Q of a circuit

Q Factor and its Relevance in Electrical Circuits

What is Q The Q or Quality Factor of a resonant circuit is the ratio of stored power to dissipated power in the Reactance and Resistance of the circuit. Generally speaking, a higher Q corresponds to a narrower bandwidth. How is Q calculated? Note that at resonance, a … Read More

Maritime operation

Maritime Radio: Everything You Need to Know

Maritime mobile Amateur radio stations have been installed on ships at sea, both for conventional HF operation and for digital modes such as Winlink. In some countries, a specific block of callsigns is reserved for ocean-going … Read More

Antennas

Antennas: Everything You Need to Know

Antennas are electrical circuits designed to facilitate the transmission and/or reception of electromagnetic radiation. Antennas are specifically designed to transmit/receive as much electromagnetic radiation as possible, whereas most circuits are designed to emit/detect as little … Read More