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Public-images-osm logo.svg communication:amateur_radio:repeater:dcs
Describing DCS activation code of a amateur radio repeater. Show/edit corresponding data item.
Group: communications
Used on these elements
may be used on nodesshould not be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)
Useful combination
Status: in use

Use communication:amateur_radio:repeater:dcs=* to assign the DCS activation code of a amateur radio repeater.


The DCS activation code is a 3-digit octal number.

Technical details

DCS (Digital-Coded Squelch) is commonly known as CDCSS (Continuous Digital-Coded Squelch System). This system adds a 134.4 bps (sub-audible) bitstream to the transmitted audio to open receiver audio output. In amateur radio repeaters this starts re-transmission of received signal as well. More details can be found at wikipedia:Digital-Coded Squelch.