What is the 20 meter ham band?
The 20-meter or 14-MHz amateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14.000 MHz to 14.350 MHz. The 20-meter band is widely considered among the best for long-distance communication (DXing), and is one of the most popular—and crowded—during contests.
Is the 20 meter band open?
Note that it is already open to amateurs to 7300 kHz in North and South America. Conditions are similar to the 40m band but it works better in summer showing some of the properties of the 20m band. As communications reach 1600 km at daytime and 12000 km or more at night, this band is considered as open 24 hours a day.
What is the frequency of radio waves having a 20 meter wavelength?
3×106Hz.
What is the 17 meter band?
The World Administrative Radio Conference (WARC) bands are three portions of the shortwave radio spectrum used by licensed and/or certified amateur radio operators. They consist of 30 meters (10.100–10.150 MHz), 17 meters (18.068–18.168 MHz) and 12 meters (24.890–24.990 MHz).
What band is best for DX?
20 metres – 14.0–14.35 MHz – Considered the most popular DX band; usually most popular during daytime. QRP operators recognize 14.060 MHz as their primary calling frequency in that band. Users of the PSK31 data mode tend to congregate around 14.070 MHz. Analog SSTV activity centers on 14.230 MHz.
How far can radio waves travel?
Radio waves have the longest wavelengths in the EM spectrum, according to NASA, ranging from about 0.04 inches (1 millimeter) to more than 62 miles (100 kilometers)….Bands of radio waves.
| Band | Frequency range | Wavelength range |
|---|---|---|
| Extremely Low Frequency (ELF) | <3 kHz | >100 km |
| Very Low Frequency (VLF) | 3 to 30 kHz | 10 to 100 km |
How are radio waves used on Earth?
Various frequencies of radio waves are used for television and FM and AM radio broadcasts, military communications, mobile phones, ham radio, wireless computer networks, and numerous other communications applications. Most radio waves pass freely through Earth’s atmosphere.
What is the 40 meter ham band?
The 40-meter or 7-MHz band is an amateur radio frequency band, spanning 7.000-7.300 MHz in ITU Region 2, and 7.000-7.200 MHz in Regions 1 & 3. It is allocated to radio amateurs worldwide on a primary basis; however, only 7.000-7.100 MHz is exclusively allocated to amateur radio worldwide.