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Updated Radio operation (markdown)

ErikS-web
2023-11-01 08:39:35 +01:00
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Radio-operation.md

@@ -31,7 +31,7 @@ The scan can be stopped with the `EXIT` button, the search result will be ignore
# DTMF calling (decoding) # DTMF calling (decoding)
DTMF calling can be turned on in the menu `D Decd` (DTMF Decoding). You need a computer and programming cable to setup the whole system. You need to change `ANI ID` (programmable from the computer) of each radio to be unique in your network. It is also a good idea to program the list of contacts, their IDs and names. [DTMF](https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling) calling can be turned on in the menu `D Decd` (DTMF Decoding). You need a computer and programming cable to setup the whole system. You need to change `ANI ID` (programmable from the computer) of each radio to be unique in your network. It is also a good idea to program the list of contacts, their IDs and names.
The basic idea is to be able to dial a one particular person (or a group) among many on the same frequency. If you turn on the DTMF calling on a given channel your radio will be silent on that channel until an incoming call arrives with the destination ID matching `ANI ID` of your radio. If you receive the call a time window opens up in which the speaker activates and a person on the other side can talk to you. The time window expires after a delay set in `D Hold` menu entry from the time when incoming signal disappears. The basic idea is to be able to dial a one particular person (or a group) among many on the same frequency. If you turn on the DTMF calling on a given channel your radio will be silent on that channel until an incoming call arrives with the destination ID matching `ANI ID` of your radio. If you receive the call a time window opens up in which the speaker activates and a person on the other side can talk to you. The time window expires after a delay set in `D Hold` menu entry from the time when incoming signal disappears.