How do we know it uses IMBE and not AMBE or something else?
The label placed on the glass case in front of the ht has "C4FM" and "FDMA" in english
on it and if it is FDMA then it must be IMBE.
But, IMBE is a vocoder type. It can be implemented on any air interface as long as there is enough data to move it. C4FM on the label is just the modulation (air interface) type. That's my understanding or am I missing something?
If it was P25 it would probably say P25 since that would be a huge selling point. If this were a Icom it would say DSTAR, not digital or C4FM, cuz that would not be the way to advertise it. prcguy
I bet it's some DMR thing.
Isn't conventional operation in IMBE the same as conventional operation in P25? GARY N4KVE
It may be only for the Japanese market.
Yaesu (Vertex Standard) doesn't have any recent FCC Authorization grants for it.
"If it were DMR it would be TDMA and not FDMA."
MOTOTRBO is TDMA. IDAS (Icom) and NEXEDGE (Kenwood) DMR are FDMA.
Nope, it's π/4 DQPSK modulation and TDMA.The European TETRA is also based on C4FM an FDMA.