Batboard

whats the difference other than channels? also does the cm300 support Expand? Thanks

pm400 does ltr trunking

is that the main diff?

The PM400 mobile two-way radio is perfect for new two-way radio users, small organizations, and firms that want an affordable solution with a maximum number features. It offers 64-channel operation, innovative LTR trunking capability and option board expandability.

Features:
Innovative LTR trunking:
- Broad calling range
- Rapid channel access
- Outstanding privacy
- High user and talkgroup capacity
- Up to 10 sites and 100 talkgroups
- Up to 20 repeaters per site

Rugged design
Meets military specifications for sealing against dust, wind, shock and other adverse conditions.

Alphanumeric display
8-character display shows status and radio information clearly at all times.

Large controls
Accommodate all users, including ones wearing gloves

Programmable buttons
Four buttons give users choice of up to 8 features.

Quik Call IITM and MDC 1200 signaling
Sends and receives through features such as Push-to-Talk, Selective Call and Call Alert.

besides the LTR trunking, and channel capacity....

The CM300 UHF only comes in 438-470 MHZ where the PM400 UHF has two available frequency models, 438-470 OR 465-490

The opposite is true for the VHF models the PM400 VHF is only available 146-174 Mhz, and the CM300 is available in 146-174 or 136-162 MHz.

There are also some additional signalling features with the PM400. Some additional MDC features, like individual call, check status and DTMF signalling that the CM's do not have.