That was interesting. They pretty much sounded the same. Remember, the P25, & DMR radios were down 20% tx power, but it's nice that on the hammy radios you can hit a button to change modes. But I can understand why that feature isn't available on the commercial radios. Like I said before, go with the mode that your friends use.
I thought it was a good general comparison, but antennas could be responsible for some of the differences in signal levels and decoding.
prcguy
Does the Motorola implementation of tier 3 trunking also adhere to the standard? What about aes encryption not being available in the us even though it's in the standard as well?
Let's be honest, trbo is only dmr compliant in conventional (tier 1) operations. Throw trunking into the mix and it's just as proprietary as smartnet/smartzone trunking
Not relevent to Amateur Radio, to be honest, since over the air encryption is fobidden. And, as I said, the ETSI specifications PERMIT manufacturer specific extensions, which is what underlies the MotoTRBO implementation.
Does the Motorola implementation of tier 3 trunking also adhere to the standard? What about aes encryption not being available in the us even though it's in the standard as well?
Let's be honest, trbo is only dmr compliant in conventional (tier 1) operations. Throw trunking into the mix and it's just as proprietary as smartnet/smartzone trunking
and I doubt there will ever be a trunk system deployed by ham operators.
Don't be so sure! I'm agitating locally to get people interested in the idea of a wide-area trunking system. We have a couple linked repeaters and a couple wide-area coverage ones up on the buildings downtown, but they don't have total coverage (at least for HT's). It'd be rad to have a common network with different talkgroups taking the place of individual repeaters with their own group of regulars. Would really simplify emcomm too.I doubt there will ever be a trunk system deployed by ham operators.
Don't be so sure! I'm agitating locally to get people interested in the idea of a wide-area trunking system. We have a couple linked repeaters and a couple wide-area coverage ones up on the buildings downtown, but they don't have total coverage (at least for HT's). It'd be rad to have a common network with different talkgroups taking the place of individual repeaters with their own group of regulars. Would really simplify emcomm too.
What protocol?
The issue with part 97 trunking would be the issue of station ID on the control channel.
Under part 90 rules, the lowest frequency in a trs is the one to id for the entire system. Furthermore in a smartzone and moto 7.x p25 system control channels cannot be set to id in the manager. You could set voice channels to id, regardless of frequency.
This limitation would need to be overcome to legally deploy cc based trunking in the amateur bands.