The FCC doesn't allow digital voice on GMRS (or FRS or MURS).I wish they did digital.
Digital is not permitted on GMRS at this time. And I've not heard any plans to change that.I wish they did digital. Having the ability to go digital for better range and encryption for privacy would be great.
Not srue how or why going digital would increase range, can you explain?I wish they did digital. Having the ability to go digital for better range and encryption for privacy would be great.
With digital you don't lose audio quality until the signal is too weak to decode.Not srue how or why going digital would increase range, can you explain?
With narrowbanding analog FM from 16K0F3E to 11K3F3E voice quality and range are lost. DMR and P25 do recover the coverage range however there can be no argument that 16K0F3E FM sounds far better than the IMBE and AMBE vocoders in most conditions.With digital you don't lose audio quality until the signal is too weak to decode.
The same thing applies to DMR and P25.Audio Quality and Coverage | What is NXDN™ ? | NXDN Forum Website
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I know digital sounds better when within range, but I wasn't aware it increased range. When digital is out of range you get nothing right?With digital you don't lose audio quality until the signal is too weak to decode.
The same thing applies to DMR and P25.Audio Quality and Coverage | What is NXDN™ ? | NXDN Forum Website
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Digital sounds good if it's set up correctly. Often the complaints about digital audio quality stem from someone setting up the radios incorrectly.I know digital sounds better when within range, but I wasn't aware it increased range. When digital is out of range you get nothing right?
Isn't this one of the reasons aircraft still uses AM analog?
That is my understanding 'from what I've read', but I'm not smart enough to know for myself if that's actually true.I've also heard that AM is still used for aircraft because there's no FM capture effect and if an aircraft is transmitting an emergency there is a better chance of getting through even if there's heterodyning with another signal.
I wish they did digital. Having the ability to go digital for better range and encryption for privacy would be great.
I do know of one group that has an experimental license for DMR on GMRS. They've been renewing every year for the last couple of years.Is anyone knocking on the FCC’s door asking for digital?
Hmm...that would be cool, even if just an experimental license. We have the room for it, repeater pair wise, in my area and beyond to reduce interference. I need to read up on how to obtain that and any data they may need for the system area and the system itself such as the Quantar etc.
I too doubt the FCC would allow only one digital mode. As to the FCC rules, I don't need to add problems to my list of things. @mmckenna do you have any info on that group? It may accelerate my research if I can get some insight from them.
UPDATE: Well, I found the FCC experimental licensing system easy enough. Time for some reading.
.UPDATE: Well, I found the FCC experimental licensing system easy enough. Time for some reading.
07/29/2019 | New emperimental at 462 MHz to further determine how modern narrowband digital systems might co-exist with traditional analog FM systems on shared channels in the GMRS in a metropolitan area. |
I had a dog and his name was Bingo. "Capture effect" plays a role in communications for sure.I've also heard that AM is still used for aircraft because there's no FM capture effect and if an aircraft is transmitting an emergency there is a better chance of getting through even if there's heterodyning with another signal.