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ETSI TS 102 361-1 Clause 10 is pretty explicit on that: 10.1.2 RF carrier bandwidth The radio system operates within a 12,5 kHz RF carrier bandwidth. … 10.2.1 Symbols The modulation sends 4 800 symbols/s with each symbol conveying 2 bits of information. The maximum deviation, $D$ of the symbol is defined as: $$D = 3 h / 2 T$$ where: $h$ is the deviation ...


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To answer each point in turn: DMR radios are different from "normal" ham radio equipment in that it uses a digital voice encoder/decoder rather than the more traditional FM analog voice mode that you're probably used to. Fun fact: Kenwood makes DMR-capable radios in their NX series of digital (commercial land mobile) radios, and the mode was made popular in ...


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This handheld radio requires you program in all the repeaters you want to use, so it already knows what is available and could, in theory, check GPS or it could check to see if there's a usable signal on a given channel. ...but it already knows the channels. So, that'd be nice and all, but that wouldn't be enough to be useful. Imagine this: you're in ...


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The radio can be programmed for DMR operation, or for standard analog repeater (or analog simplex) transmissions; you do not gain any DMR features while using analog.


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Repeating the last frame to fill in holes from missing frames is a common digital voice technique. For small rates of frame loss, repeating a frame now and then is less noticeable than silence.


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The easiest way is if you send a private call to 9990 (parrot) in brandmaister network and see the actual traffic on brandmaister's site.


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I think this is an interesting question, but seems hard to answer. In the USA, perhaps you could FOIA the FCC to see what their monitoring stations cover and/or if they collect any data on this. Otherwise, the digital modes you are asking about (DMR, D-star and Fusion) are typically used on the VHF/UHF bands. These transmissions do not propagate far, and so ...


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The radio you received is a UHF DMR HT. If you have a DMR repeater in your area, you will be able to do some testing of the radio. You can locate a repeater by visiting RepeaterBook. The first step is to register with radioid.net to get your own Radio ID. This will then need to be programmed into the radio in order to make it usable on a repeater. If you ...


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I don't know any radio firmware that would support blocking a specific ID. It would be easy to implement in MMDMHost. Call Alert is a ringer function. If a radio receives a call alert signal then it rings and sends back an answer to the caller and the caller radio shows a message about the successful delivery.


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