At just above the AM Broadcast band, 160 meters is the lowest radio frequency band alloted for use by Amateur radio, commonly called ham radio, is a hobby enjoyed by many people throughout the world (as of 2004 about 3 million worldwide, 60,000 in UK, 70,000 in Germany, 5,000 in Norway, 57,000 in Canada, and 700,000 in the USA). A holder of an Amateur...
Amateur Radio operators. Seasoned operators refer to 160 meters as Topband, it is one of the harder to work, while the contacts made with it are farther away, thus more rewarding.
Band Plan
Below is a common band plan for 160 meters.
Sample Band Plan
1.800 MHz - 1.830 MHz
CW is an abbreviation which may stand for: Continuous wave, a method of radio transmission Conventional wisdom, a description of ideas that are generally accepted as true This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. If an article...
CW, Radioteletype (RTTY) is a telecommunications system consisting of two teleprinters linked by a radio link. RTTY uses a variety of different modulation methods, of which frequency shift keying are the most common. The coding used is the 5-bit ITA2 code (also known as the Baudot code), which is used...
RTTY and other narrowband modes
1.830 MHz - 1.840 MHz
CW is an abbreviation which may stand for: Continuous wave, a method of radio transmission Conventional wisdom, a description of ideas that are generally accepted as true This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. If an article...
CW, Radioteletype (RTTY) is a telecommunications system consisting of two teleprinters linked by a radio link. RTTY uses a variety of different modulation methods, of which frequency shift keying are the most common. The coding used is the 5-bit ITA2 code (also known as the Baudot code), which is used...
RTTY and other narrowband modes, Intercontinental This may refer to: The post-nominals of the Queens Service Order The Queensland Symphony Orchestra The exchange between two radio amateurs or a SWL and an radio amateur or a commercial HF radio station. This is a disambiguation page — a navigational aid which lists other pages that...
QSOs only
1.840 MHz - 1.850 MHz
CW is an abbreviation which may stand for: Continuous wave, a method of radio transmission Conventional wisdom, a description of ideas that are generally accepted as true This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. If an article...
CW, SSB might be an acronym or abbreviation for: Single-sideband modulation strategic system builder Single-strand binding protein. Super Smash Bros. video game franchise. Strategic Support Branch Statistisk Sentralbyrå, the Norwegian statistics bureau This is a disambiguation page — a navigational aid which lists other pages that might otherwise share...
SSB, Slow-scan television (SSTV) is used by amateur radio operators, to transmit and receive static pictures in monochrome (black & white) or colour. SSTV was used extensively during the early years of the NASA Apollo program to transmit images to Earth, and the first images from Apollo 11 on the...
SSTV, other Wideband is a relative term used to describe a wide range of frequencies in a spectrum. Wideband in speech services means that the used speech frequency response covers 50-7000Hz. The opposite of wideband is narrowband. See also Broadband Ultra wideband ...
wideband modes, Intercontinental This may refer to: The post-nominals of the Queens Service Order The Queensland Symphony Orchestra The exchange between two radio amateurs or a SWL and an radio amateur or a commercial HF radio station. This is a disambiguation page — a navigational aid which lists other pages that...
QSOs only
Topband is just another name for the 160meter band, it is the only amateur band that is in the medium wave spectrum - the frequency range is 1800 KHz - 2000 KHz, located just above the A.M. broadcast band.
Working a new DX station is a real thrill - but you usually have to invest time, and patience on the band to work dx - plan on getting up at unusual times in order to "snag" that new country.
160 propagation very hard to predict, there are many factors which affect this band much more than say 80m or 40m.
Typical examples at 80 meters would be a 10 ohm load resistance transformed to a 4000 ohm parallel equivalent which is transformed back to 50 ohms, while a 100 ohm load resistance might be transformed to 1000 ohms before being transformed back to 50 ohms.
Custom roller inductors can have a higher Q. Since 80 and 160meters are the lower frequency limits of these tuners, and the antennas to be tuned there are often relatively short or far from resonance, losses for these bands are important concerns.
For the ultimate transmatch, at 80 or 160meters, the reactance of the capacitor across the input is significantly larger than 50 ohms, so it has little effect.
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