Motorola MTP850 — TETRA Handportable with 2.0-inch Display, SDS, WAP, TEA Encryption and 16-Hour Battery at 320g
TETRA is a trunked standard, not a radio feature, so the MTP850 is chosen by network rather than by datasheet: on Dimetra infrastructure it is the handportable that gets issued, and the 1.8 W Class 3L output and end-to-end TEA encryption are non-negotiable parts of that standard rather than options. Where it separates from a DMR handset is the data layer — a 2.0-inch display with a full alphanumeric keypad runs SDS text messaging for workforce dispatch and a WAP browser for field applications, so the radio carries job tickets and status updates, not just voice. Integrated GPS puts every unit on the dispatcher’s map, and the 320g chassis is rated for 16 hours on a charge. For agencies already running TETRA, the question is never whether the radio is competitive — it is whether the network is.
Hytera HP605 — 22mm Slim DMR with 256 Channels, IP67, 5W Output and 22-Hour Runtime
The opposite strategy: a DMR workhorse that competes on what an owner-operator actually pays for. 256 channels across 64 zones hold a multi-site plan without a codeplug rewrite, and DMR Tier II dual-slot TDMA doubles capacity on a single frequency pair. The 22mm chassis is the thin end of the commercial DMR market, IP67 with MIL-STD-810G covers rain, mud and drop, and the 2,000mAh pack is rated at 22 hours — four hours longer than the TETRA handportable above. 5W output and a 2.0-inch colour display handle range and channel selection, AI-based noise cancellation lifts speech out of plant and traffic noise, and AES-256 encryption covers fleets that need secure traffic without a trunked network behind it. It is the radio you specify when there is no network mandate and the fleet has to justify its cost per seat.
| Specification | Motorola MTP850 | Hytera HP605 |
|---|---|---|
| Air Interface | TETRA trunked (Dimetra infrastructure) | DMR Tier II dual-slot TDMA |
| Positioning | TETRA data flagship for trunked-network agencies | Slim mid-tier DMR workhorse |
| Display / Keypad | 2.0-inch display with full alphanumeric keypad | 2.0-inch colour display |
| Battery / Runtime | 16-hour rated battery | 2,000mAh — 22-hour rated |
| RF Output | 1.8W Class 3L | 5W |
| Encryption | TEA end-to-end encryption | AES-256 |
| Body | 320g handportable | 22mm ultra-slim chassis |
| Channel Capacity | Talkgroup-based trunked operation with SDS and WAP data | 256 channels across 64 zones |
HP605 weight is omitted deliberately: this site’s own sections disagree (240g in six of them, 255g in hp605vsr2). Resolve the contradiction upstream before publishing a figure.
The Network-Standard-versus-Tier Decision
This is not a like-for-like choice, and treating it as one is the most common procurement mistake. Specify the MTP850 when a TETRA network already exists or is mandated — police, metro and utility fleets on Dimetra — because the radio is the cheapest part of that commitment and 1.8W Class 3L trunked operation with TEA end-to-end encryption is what the standard requires. There, SDS messaging, WAP data and GPS tracking are the operational payoff, and the 16-hour battery is sized for a shift. Specify the HP605 when there is no network mandate and the fleet must justify cost per seat: 256 channels across 64 zones, DMR Tier II dual-slot TDMA, a 22mm IP67 chassis with MIL-STD-810G, 5W output, AES-256 and 22 hours of runtime on a 2,000mAh pack. The trade is explicit: TETRA buys a trunked network standard with end-to-end encryption and data services; DMR buys 22 hours, 5W and 256 channels at a fraction of the infrastructure cost. Where both exist in one estate, keep them on separate networks — the radios never interoperate.
