AUX pin assignment on Sepura Tetra Digital radio?

ByFiTeKa

I've been looking for an explanation for some time as to which ring on the AUX is used for which line on Sepura radios. Specifically, it concerns the AUX on the "speaker" ( https://www.selectric.de/shop/funk/zubehoer/stp8-9000-zubehor/stp-horen-sprechen/stp-lautsprecher-mikrofon-zubehor/sepura-stp8-9000-lsp-mik-zubehor/stp8-9000-lautsprecher-mikrofone-inkl-zubehor/mik-lautspr-advanced-srsm-ip67-m-clip-3-funktionstasten-notruf-f-stp8-9000-300-01169.html ). I've looked for documentation but haven't found any. Does anyone know what the AUX wiring diagram is? Thank you in…

BOS digital radio status for medical services?

Bypipifax153

I have a medical service at a Christmas market tomorrow and I'm responsible for the radio there. My question is how the radio communication there is different than when you're out and about in an ambulance or emergency medical vehicle. For example, if I'm driving to an incident in the ambulance I press status 3…

Do you need a license for TETRA radio?

ByNemo84

Hello! The Tetra digital radio standard not only replaces the classic BOS radio, but also the company radio. Licenses were required for both – except for Motorola's "Freenet", which was officially for commercial radio in the 2-meter band, but was available as a free radio application for everyone – similar to the (actually free) PMR,…

How does analog fire alarm work?

ByHlsezrvsu

Hello, can someone explain to me which radio masts the analog fire alarm system uses? In Bavaria, many, if not most, fire departments have digital radio, but alarms are still sent using analogue technology. How does this work if the digital radio masts/base stations aren't even analogue? Where does the detector receive the signal from…