The Simoco Xd SDP750 is a digital portable radio capable of operating across multiple modes, including analogue conventional, digital conventional (DMR Tier II) and digital trunking (DMR Tier III).

Best in class sensitivity ensures crystal-clear communications in fringe areas and harsh environments while a compact form factor means the radio is suitable for a wide range of users.

The SDP750 offers a rich feature set including full duplex calling, allowing for enhanced communications between office and field staff. Additional features include GPS, long battery life and Bluetooth to allow for the connection of additional wireless accessories.

The radio’s ability to allow the user to operate across a variety of network signature modes means it is not only a safe and future proof investment, but also provides a cost effective and flexible migration path for organisations managing the transition from analogue to DMR digital.

SDP750 DMR Portable Radio

SDP750 DMR Portable Radio


  • General

    Frequency Bands: VHF:136–174MHz
    Channel Capacity: 256
    Channel Bandwidth: 12.5/25kHz
    Dimensions: 125x54x35mm
    Weight: 320g (Standard battery and antenna)
    Operating Voltage: DC 7.3V ±15%
    Battery: Standard: 2400mAh (Li-Ion)
    Option: 3400mAh (Li-Ion)
    Battery (5-5-90 duty cycle, High TX Power): Analogue: 12 Hours
    Digital: 14 Hours
    Model Variant: SDP750 without GPS & Man Down
    SDP750 with GPS & Man Down
    SDP750 with GPS, Man Down, Full Duplex & Bluetooth


    Frequency Stability: 0.5ppm
    RF Power Output: VHF: High: Up to 5W
    Low: Up to 1.25W
    UHF: High: Up to 4.5W
    Low: Up to 1.25W
    Digital Modulation 7K60FXD (Data Only)
    7K60FXE (Data and Voice)
    Analogue Modulation: 16K 0F3E @ 25kHz
    11K 0F3E @ 12.5kHz
    Adjacent Channel Power: 70dB @ 25kHz
    60dB @ 12.5 kHz
    Conducted and Radiated Emission: -36dBm (<1GHz)
    -30dBm (>1GHz)
    Transmission Deviation Limits: 5kHz @ 25kHz
    2.5kHz @ 12.5kHz
    Audio Distortion: 3% Analogue 5% Digital
    Hum and Noise: 49dB @ 25KHz
    43dB @ 12.5KHz
    55dB @ Digital
    Audio Response: +1 ~ -3dB


    Digital Sensitivity: Typical: -121dBm / BER 5%
    Typical: -118dBm / BER 1%
    Analogue Sensitivity: Typical: -121dBm / 12dB SINAD
    Intermodulation: >70dB (TIA603) >65dB (ETSI)
    Blocking: 84dB (TIA603 & ETSI)
    Spurious Response Rejection: >70dB (TIA603 & ETSI)
    Adjacent Channel Selectivity: 70dB@25 kHz (TIA603 & ETSI)
    60dB@12.5 kHz (TIA603 & ETSI)
    Conducted Spurious Emission: -57dBm (<1GHz)
    -47dBm (>1GHz)
    Rated Audio Power Output: 1.8W
    Rated Audio Distortion: 3% Analogue 5% Digital
    Hum and Noise: 49dB @ 25kHz
    43dB @ 12.5kHz
    55dB @ Digital
    Audio Response: +1 ~ -3dB
    Digital Vocoder Type: AMBE+2
    Digital Protocl: ETSl TS 102 361-1, -2, -3, -4


    Operating Temperature: -30 – +60ºC
    Storage Temperature: -40 – +85ºC
    Dust and Water Intrusion: IP67 (IEC60529)
    Environmental: MIL-STD-810 C/D/E/F/G
    ESD: IEC 61000-4-2 (level 4) ±8KV (Contact), ±15VK (Air)


    Tiff Cold Start: <120s
    Tiff Hot Start: <10s
    Horizontal Positioning Accuracy: <10s
    Acquisition Sensitivity: <-140dBm
    Tracking Sensitivity: <-152dBm


    Call Types

    Individual Call Radio to radio and radio to/ from dispatch
    Group Call Radio to group or dispatcher to group
    Analogue PABX/ DTMF + Over dial DTMF dialling plus onward dial through extensions/ automated reception options
    Call to PSTN Terminals can call PSTN numbers via the PABX
    SIP PABX Call Radio to/ from PABX via SIP interface
    Short Data Messaging Text message to/from radios and/or dispatch
    Status Messaging Send pre-scanned messages quickly over the air via (short code digits) menu
    All Call Call to all devices on a network from radio or dispatch with all PTTs disabled
    Full Duplex DMO Calls Radio to radio calls in full duplex mode


    GPS Supports Global Positioning System
    Bluetooth V4.0, can be used with BT device for audio plus BT PTT Accessory available and BT Palm Microphone for vehicle installs
    Noise Reduction Software activated in device
    Real time clock and Calendar Displays date and time in menu bar
    French Language French GUI
    Missed Call List Missed calls can be called back from the list via the PTT
    Call Diversion User can set divert incoming to another radio ID
    Dial String Call Modifiers Use Dial Strings to modify call types or status messages - includes auto detect telephone dialling

    Worker Safety Needs

    Lone Worker User can set - If idle, radio prompts for response at pre-programmed intervals - radio raises emergency call on pre-configured criteria
    Duress Call Can be alarm and/or call - configurable hot mic. duration/tone - can use Priority Interrupt
    Man Down Terminals can be set to trigger a duress call when either tilted beyond a preset amount or no movement detected for a preset time
    Emergency Call Indication Receiving radio can be set to visually indicate when a call is an Emergency Call
    Call Alert Radio emits a loud tone until acknowledged by user
    Radio Check Supplementary feature used by authorised radios to determine whether a particular target radio is switched on with in coverage and active
    Radio Monitor Supplementary service which enables suitably authorised radios to remotely enable the microphone of target radios for a predefined period of time

    High Security

    Authentication Authentication of a device upon registration to a network or on stun/ revive commands
    Stun / Revive / Kill Stun, revive and/ or kill a radio from an authorised user radio or dispatch
    Enable/ Revive Similar to stun and revive
    Encryption AES Encryption 256 bit

    Management of Network and Radio Features

    OTAP Terminals support over the air reprogramming (OTAP)
    Enhanced Subscriber Management Enhanced management of subscribers configuration and feature control for network operators
    Multi Site Roam Terminals hunt for strongest signal and can roam between sites
    Group Presence Check For group calls, only the sites where group members are registered at the time are involved in the call
    Mixed Mode Scanning Increased network availability and access to mixed digital and analogue channels - Terminals are programmed with scan lists and a scan list can then be assigned to a channel


    Operating Modes Analogue conventional, digital conventional (DMR Tier II), and digital trunking (DMR Tier III)
    Frequency Bands Available in VHF and UHF frequency bands
    RF performance Exceptional RF performance – exceeds ETSI and TIA-603 specifications
    Compliance Fully compliant with ETSI DMR standards
    MIL STD and IP Rating MIL-STD-810 & IP67
    Audio Output Market leading 1.8W audio output
    Receiver sensitivity -121dBm receiver sensitivity (typical) – increase coverage area and improve audio quality