The Diamond MR77B is a commercial-grade dual-band mobile vertical antenna system engineered to optimize line-of-sight signal propagation, voice clarity, and communication efficiency across local and tactical networks. Precision-tuned to track both the VHF (144 MHz) and UHF (430 MHz) amateur bands, this high-performance antenna asset delivers an impressive 3.4 dB signal gain performance profile. It functions as an immediate, high-rotation operational procurement part for security patrols, emergency field teams, commercial transit fleets, and high-volume B2B radiocommunication accessory wholesale distribution channels across European markets.
The physical framework features a highly efficient 50 cm total structural length, striking an ideal balance between aerodynamic low-profile compliance and maximum electronic aperture efficiency. Built to withstand continuous vehicular deployment, the hardware assembly incorporates an integrated lower phasing coil to stabilize impedance matching under heavy operational loads up to a maximum power rating of 70W. The mechanical installation kit centers around a heavy-duty, high-retention magnetic base that ensures a secure, non-destructive placement on flat steel vehicle roof panels. To eliminate attenuation losses and ensure immediate configuration readiness, the kit comes factory-fitted with a generous 4-meter RG58U flexible coaxial feedline pre-terminated with a standard BNC interface connector.
Technical Specifications Matrix
| Technical Specification Parameter | Value & Fleet Alignment |
|---|---|
| Product Brand Designation | Diamond Antenna |
| Hardware Model Designation | MR77B |
| Primary Component Classification | Dual-Band Mobile Antenna with Magnetic Mount Base Kit |
| Operational Core Frequencies | VHF: 144 MHz / UHF: 430 MHz (Dual-Band Tracking Architecture) |
| System Peak Signal Gain | 3.4 dB |
| Maximum Electrical Power Rating | 70 Watts Continuous Input Capacity |
| Primary RF Interface Connector | Standard BNC Quick-Disconnect Mechanical Connector |
| Integrated Coaxial Cable Spec | 4 Meters High-Flexibility RG58U Shielded Low-Loss Cable |
| Physical Whip Element Length | 50 cm |
| Total Assembly Net Weight | 400 grams (Including base and cable assembly) |
