MOTOTRBO

[JRayfield]

When you say 'scanning', with reference to Capacity Plus systems, do you mean having multiple talkgroup ID's in a receive list?

John Rayfield, Jr. CETma
W0PM

We have found in testing that many times non Moto radios outperform the motos in scanning. Especially on Capacity Plus trunking.

 

[ScanWI]

Correct, I do not mean getting onto the system. Rx only.

 

[DaveNF2G]

The current DSDPlus (1.073 as of today) will show RAS after the color code if it's enabled in a system.

 

[SCPD]

The current DSDPlus (1.073 as of today) will show RAS after the color code if it's enabled in a system.

I assume you mean show whether or not its on? Not the actual key?

 

[Forts]

Yes, it just shows that it is in use.

 

[com501]

All of this does you no good when every single radio in your system has AES encryption turned on by default for all users. Even Version 1 radios can use Enhanced Privacy and beat any passive (or active) monitoring. Trbo did one thing right, made encryption a free option. If should have really been the programming default.

 

[Forts]

If you can get M to sell you AES haha

 

[com501]

You can, for Connect Plus, its an option in the controller. For all others, there is a much easier option.

 

[Forts]

Yup... I'm aware of the easier option

 

[RRR]

Trbo did one thing right, made encryption a free option. If should have really been the programming default.

Not if you don't want to have everything muffled sounding.

Yes, enabling ENC on mototrbo DOES degrade voice quality noticeably, regardless of what "testing has shown"

 

[com501]

Perhaps you should actually install the 2.4 firmware and setup your radio correctly and not rely on the factory settings.

 

[mainetrunk]

mototrbo

I have a question. Or 2.
This 2 slot stuff. Does trbo do 2 slot because the tail is too long? Like the older p25 sound?
And, a slot-- defined as a channel holder?
Heres what I think - currently

If trbo is on 1 freq-- say 461.000, the --color code-- is similar to a NAC.
1 channel has 1 color code, and when the 1st talker releases the talk button, the radio automaticly shifts to the 2nd channel--aka slot, while the 1st slot stops the tail, and 2nd slot be used in conversation til he stops, then back to the 1st slot ( channel?)
So, 2 slots, 1 freq, am I anywhere near correct?
thanks

 

[Forts]

Nope

The 2 slots are independent. So take a frequency ... 421.5000. It will be assigned a color code (which applies to both slots) then you have 2 timeslots. Each timeslot operates independently of each other... So two completely concurrent conversations can take place at the same time.

 

[Forts]

There are also trunking setups that will just assign a call grant to whichever slot is free. Usually a talkgroup is tied to a specific timeslot.

 

[mainetrunk]

Thank you sir,
no wonder why regular scanners have not started scanning it yet.. Wow, what technology

 

[ASAD]

I hear this a lot that two simultaneous conversations are possible on a single DMR channel. If, for example, channel 1 is 461.000 MHz, slot 1, and you are tuned to channel 1, you hear units talking to each other on slot 1. Now if you key in, you will be transmitting on slot 1. How do you specify that you want to use slot 2 on that single channel? Or do you program 461.000 MHz on channel 2 with slot 2?

I'd appreciate explanation to have my curiosity gratified.

 

[Forts]

It's all in the software. When you program the channel you have to specify a talkgroup and which timeslot it belongs on. So you could have 461.1000 with public works on slot 1. Meanwhile transit is on the same freq, using timeslot 2, at the same time.

 

[ASAD]

Are you saying using the two slots independently only possible in trunking? Is that possible in simplex or at least with a repeater?

 

[Voyager]

2 slots in any digital mode - trunked or conventional.

 

[jaspence]

Each timeslot can have several groups. A typical setup could be world wide, No. America, state wide 1, event 1 & 3 all on slot 1. Slot 2 would be state wide 2, event 2 & 4. A slot can only be used on one group at a time. World wide lets it go through the Internet to all repeaters, tying up all machines. Statewide is just what it says, for a single state, thereby freeing up everything outside the state. There are other groups, such as local in some areas, but the example is a common setup.