Key:communication:amateur_radio:repeater

Use communication:amateur_radio:repeater=* to mark the location of a amateur radio repeater.

A amateur radio repeater is a automatic transceiver that receives a signal and transmits it on a different frequency. A repeater receives input, often on one or more fixed frequencies, then retransmits it on another fixed frequency.

Radio amateurs typically use repeaters on VHF and UHF bands in order to communicate within a region using hand-held radios. Multiple repeaters may be linked together to give wider coverage over an area by other radios (typically on a different band) or via Internet Protocol (e.g. IRLP, Echolink, AllStarLink). Linking of repeaters may be continual or turned off an on as needed.

Repeaters are typically associated with a communication tower but sometimes may use a tall building or geographical feature for the necessary height.

Values

The callsign of the repeater, e.g: ZU9DCM, ZS4ZK, ...

Mapping

• man_made=tower or man_made=communications_tower (mandatory)
• name=*
• communication:amateur_radio:callsign=* amateur radio call sign assigned to the object
• communication:amateur_radio:repeater:frequency_out=* repeater's transmitting frequency (Hz)
• communication:amateur_radio:repeater:modulation=* repeater's modulation type (designation as WARC 79)
• tower:type=*
• communication:amateur_radio:repeater:power=* Transmitter power (W)
• communication:amateur_radio:repeater:shift=* Shift for the repeater's receiver frequency (Hz)
• communication:amateur_radio:repeater:toneburst=* Repeater's activation tone (Hz), a tone frequency to be sent for 175msec at the start of a transmission to activate a repeater. Common in Europe.
• communication:amateur_radio:repeater:ctcss=* Continuous Tone-Coded Squelch System (Hz) aka "PL Tone" or "Tone Squelch", a sub-audible tone sent continuously during a transmission to keep the repeater active. Common in USA.
• communication:amateur_radio:repeater:dcs=* Digital-Coded Squelch System (3-digit octal number) aka "CDCSS"

Additional tags

• operator=* Callsign of the operator that manage the repeater

Details on values

The "modulation" value is an alphanumeric code according to WARC 79 agreement. In cases where dual-mode operation is possible e.g. Yaesu System Fusion (YSF), a semicolon-separated list is appropriate. HFUnderground provides a useful reference. Some common examples:

• 11K2F3E - 2.5 kHz deviation "narrow" FM analog voice
• 20K0F3E - 20 kHz bandwidth "wide" FM analog voice
• 7K60FXE - DMR 2-slot TDMA Voice
• 8K10F1E - P25 P1 C4FM Voice
• 6K00F7W - ICOM D-Star Digital Voice
• 150KF1D - ICOM D-Star Digital Data
• 9K36F7W - Yaesu Fusion
• 4K00F1E - NXDN 6.25 kHz voice
• 8K30F1E - NXDN 12.5 kHz voice

The "shift" value is an integer in Hz, algebraically added to the "frequency_out" value to have the repeater's incoming frequency. It could be negative. It should not contain '+' if positive.

The "toneburst" or "ctcss" value is a positive floating-point number, in Hz. One digit after the decimal point is sufficient.