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An amateur radio repeater system consisting of a 70 cm repeater and a 2-meter digipeater and iGate. Coaxial cavity RF filter at 2 meter repeater An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer ...
RFinder is the official repeater directory of the following associations: [4] Amateur Radio Society Italy [7] American Radio Relay League [1] Cayman Amateur Radio Society [8] Deutscher Amateur Radio Club [9] Federacion Mexicana de Radio Experimentadores [10] L’association Réseau des Émetteurs Français [11] Lietuvos Radijo Mėgėjų ...
The Western Union company used the term simplex when describing the half-duplex and simplex capacity of their new transatlantic telegraph cable completed between Newfoundland and the Azores in 1928. [4] The same definition for a simplex radio channel was used by the National Fire Protection Association in 2002. [5]
An amateur radio repeater is a specialty amateur radio station that extends the range of communications for other stations. A repeater uses a receiver tuned to one radio frequency and a transmitter tuned to another radio frequency. Other stations using a repeater station transmit on one frequency but listen for signals on the other frequency.
For example, in US two-way radio, 30–50 MHz is one band and 150–174 MHz is another. A repeater with an input of 33.980 MHz and an output of 46.140 MHz is a same band repeater. In same band repeaters, a central design problem is keeping the repeater's own transmitter from interfering with the receiver.
This was a windfall for amateur radio enthusiasts, allowing access to fairly inexpensive radios which could easily be modified for use in the 10 meter band. American Novice and Technician class licensees were granted CW and SSB segments on the 10 meter band as of 21 March 1987.
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Call sign Frequency City of License [1] [2] Licensee Format [3]; KAAM: 770 AM: Garland: DJRD Broadcasting, LLC: Christian talk/Brokered KABA: 90.3 FM: Louise: Aleluya Broadcasting Network