Moto dp3600 CPS DMR.

[iscottybotty]

Hi.
Question regarding the programming of a SINGLE DMR (BS) on the dp3600.

When programming this radio to a two slot DMR Base Station Repeater, do I need two channels, one for slot one and another for slot 2 or, is the radio clever enough to realise what slots active?
The CPS only gives options for slot one, slot two but NOT both.
Anyone know the workaround for this?
Surely the end user wouldn’t need two channels 🤷‍♂️

 

[K2NEC]

Unfortunately you need 2 channels

 

[iscottybotty]

Wow! How bizarre.
So on that basis, I imagine the user would just “key up” and the radio/ repeater will select the available slot. So why do I need two channels? The end user wouldn’t be switching channels manually and doubtful two channels would be set in their radio… I’m lost.
Are we sure this isn’t duel slot monitoring?

 

[K2NEC]

The Motorola doesn't have the ability to monitor both slots at the same time without having them in a scan list. You need to have 2 channels, one on slot 1 and one on slot 2

 

[clbsquared]

The two channels are using the same rx / tx frequency. One channel uses 1/2 the time slot, the second channel uses the other 1/2 of the time slot. Thus the definition of TDMA ( Time Division Multiple Access ). The repeater has (should have) the ability to transmit both time slots at the same time allowing two conversations on the same frequency at the same time.

 

[iscottybotty]

No. Imagine: Ted works in the stores of a small warehouse. Ted receives a group call on his radio using TG1000 Slot 2. (The slot has been confirmed via DSD and a scanner).
Ted returns the call, the call goes out on Slot 2.
A few minutes later, Ted sends a group call to the control room on TG1000 but this time, it goes out on Slot 1. The control room reply, on Slot 1. A few seconds later, after the previous call has dropped, Ted calls the control room again, this time the call goes out over slot 2. 🤷‍♂️
It’s clear the repeater is resting on either slot, and piping up on any available one, much like a Cap+ system would, but this is a single repeater DMR base station set-up.
So, Ted doesn’t flick channels, select slots. He keys up, and the process does the rest.
My question: Why do I need 2 channels to monitor both slots, when Ted does not.