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

Yagi antenna

What Is A Yagi Antenna?

A Yagi-Uda antenna (named for its two Japanese creators) is built around a half-wave dipole mounted on a perpendicular boom. Behind the dipole, which serves as the one driven element in this antenna, is a parasitic reflector … Read More

APRS

APRS: Automatic Packet Reporting System

APRS operates by receiving packets on a single fixed frequency (on 2 meters this is normally 144.39MHz North America or 144.8MHz Europe), storing them and retransmitting them until they reach a station which can transfer the information … Read More

Repeater

What is Repeater?

In amateur and commercial land-mobile radio, as well as in radio/television broadcasting, a repeater is a station that receives a signal on one frequency, immediately retransmitting it (normally on a different frequency) in order to extend … Read More

Women in amateur radio

Women in amateur radio

History In landline railroad telegraphy, operators traditionally had referred to each other as OM (“old man”). The term YL was coined in 1920 by the American Radio Relay League for young ladies of all ages, as “OM will not fit and … Read More

Attenuators

Attenuators: Everything You Need to Know

What is an attenuator? An attenuator is a resistive device that reduces the amplitude of a signal without adding distortion to it. The amplitude of a radio signal is the power, so an attenuator is … Read More

Simplex

What is Simplex in Radio Amateur?

In amateur radio use, the term “simplex” is used to refer to bi-directional communication on a single frequency – distinguishing this mode of operation from the use of repeater stations which receive on one frequency while … Read More

What is the best way to learn Morse

What is the best way to learn Morse?

There appear to be two main schools of thought regarding the best way to approach learning Morse code. Block The “traditional” way is to memorize all the characters, receive them slowly at first, and gradually ramp … Read More