What is HD1 work mode mean?

What is HD1 work mode mean?

Some customers noticed there's three work mode in HD1 software: Simplex, Repeat, Double Slot. Do you know what HD1 work mode mean?

Simplex: this means direct called mode, radio to radio, don't through the repeater. so the transmit frequency and the receive frequency are same.

Repeat: when radio connects to a repeater, please choose the Repeat mode.

Double slot: this mean DCDM( like RT82 DCDM function)

What this function does?

For digital radio like HD1, the time slot effects only connect to the repeater.
For example, when you don't connect to the repeater, and you choose simplex, but not double slot in HD1 software.
Indirect call mode, like HD1 talk with RT3, if HD1 communication channel select time slot 1, RT3 communication channel select time slot 2. Though different time slot, still they can communicate without any problem.
When you don't connect to the repeater, but you choose Double slot work mode in HD1 software. Then time slot will effect here. The channel that select time slot 1, cannot talk with the channel that select time slot 2.

What's the advantage for double slot(DCDM)?

Generally, it enhanced the frequency utility.

Because without DCDM function, two different channels normally cannot use the same frequency. But with DCDM, two different channels can choose the same frequency, just change one channel with time slot 1, the other channel with time slot 2, but with the same frequency is ok.

HD1 work mode can also select by hand on the keyboard.

Menu–Band A/B set–DMR Mode–Direct/Repeater/Double slot.

You can choose the corresponding work mode based on your requirement. Any other question? Please feel free to leave the message to us.