DXpedition

What Is A DXpedition?

What is DXpedition? A DXpedition is an expedition by amateur operators to what is considered an exotic place. These places are “defined” as exotic because of their remoteness or because there are very few radio … Read More

QRM

Radio Noise Experiments

Are Compact Fluorescent Lamps (CFL’S) RF Quiet? There has been a lot of exchanging of views about these lamps in the press of late and it revolves around the light output and the initial purchase … Read More

E-Skip

E-Skip: Everything You Need to Know

What is E-Skip? The E-layer is the lowest layer of the atmosphere and can typically be found at altitudes between about 80km and 100km. the E-Layer is characterized by high electron densities, and high temperatures … Read More

What are harmonics?

What is a harmonic? A harmonic of a particular frequency (the fundamental frequency F) is a frequency that is an integer multiple of the first one. For example: if f = 125 MHz, the harmonics would … Read More

70 centimetres

The 70-Centimeter Band: Everything You Need to Know

The 70-centimeter band is a popular UHF band. Equipment Single-band equipment for 70cm is rare, but many dual-band transceivers are available that operate on both 2 meters and 70cm. Available gear includes base stations, mobile units and HTs. … Read More

TVI

TVI: Everything You Need to Know

What is TVI? Simply, TVI is the interference of TV reception by transmissions from another source. In ham radio, we are specifically talking about transmissions from an amateur station, although it is not uncommon for … Read More

Beacon

Beacon: Everything You Need to Know

Beacons are specially constructed amateur radio stations whose sole purpose is to transmit a predefined signal at a specific time on a specific frequency. A special type of beacon called a time beacon broadcasts the … Read More

Modes

Radio Modes: Everything You Need to Know

The term mode has varying meanings, according to the context, but the most common are permitted modes in amateur licensing. Waves have three characteristics that can be changed, Amplitude, Frequency and Phase. A mode is … Read More