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Repeater frequency sets are known as "repeater pairs", and in the ham radio community most follow ad hoc standards for the difference between the two frequencies, commonly called the offset. In the USA two-meter band, the standard offset is 600 kHz (0.6 MHz), but sometimes unusual offsets, referred to as oddball splits, are used. The actual ...
[5] [6] The website takes its name from the popular amateur radio digital mode PSK31 and supports numerous digital modes, [7] [8] [9] but now the vast majority of digital modes recorded by the service are FT8 traffic. [10] Most traffic recorded on PSK Reporter is in the HF amateur radio bands but the platform also supports MF, VHF, and UHF bands.
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 ...
HamLogBook is a simple logger, with a Windows 95-inspired user interface. It supports common ADIF fields, can look up callsigns on QRZ, exports ADIF 2.0 and can automatically upload to eqsl.net. log4om: Freeware Windows klog: Open-Source (GPL-3.0) Linux, MacOS and Windows QLog: Open-Source (GPL-3.0) Linux, MacOS and Windows QSOMate: Proprietary ...
The standard message is <callsign> + <4 character locator> + <dBm transmit power>; for example “K1ABC FN20 37” is a signal from station K1ABC in Maidenhead grid cell “FN20”, sending 37 dBm, or about 5.0 W (legal limit for 630 m). Messages with a compound callsign and/or 6 digit locator use a two-transmission sequence.
The position/object/item packets contain the latitude and longitude, and a symbol to be displayed on the map, and have many optional fields for altitude, course, speed, radiated power, antenna height above average terrain, antenna gain, and voice operating frequency. Positions of fixed stations are configured in the APRS software.
WIRES uses DTMF signaling to make a connection over the Internet from a repeater or home station to another WIRES-equipped station that is accessible over the Internet. No proprietary tones or connection formats are used, so any manufacturer's radio (equipped with a DTMF encoding keypad) may be used to bring up the Internet link.
The output of the HCF4081 (pins 3,4,10,11) connect to the parallel port and provide the pulsed input that IRLP needs. The IRLP software cannot decode the D digit (the bottom right key on a 16-button DTMF dial). This is a limitation of the hardware in the decoder. DTMF digit D is logic level 0 on all 4 bits from the MT8870.