Caltta Technologies Co., Ltd.
Caltta Technologies Co., Ltd.
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Caltta DH500 DMR Portable Radio

Caltta DH5 series commercial digital radios are featured with innovative baseband/RF design, lightweight body, excellent performance, long battery life, and rich services, suitable for a wide range of industry scenarios like supermarkets, logistics, hotels, catering, private security, property, education, construction, and so on.

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Features of DH500 DMR Portable Radio

  • Easy to Operate

    The big-sized PTT button and the double-knob design at the top bring easy operation. 

  • Analog and Digital Compatible

    Digital-analog conventional compatibility allows DH500 to quickly switch between digital and analog modes.

  • Loud and Clear Voice

    Carefully optimized audio design, combined with an excellent audio encoder, ensures loudness and maximizes the fidelity of the voice. Even in a noisy environment, this DMR portable radio can accurately identify the caller and transmit the content clearly.

  • Large Capacity Battery 

    With a 2500mAh large-capacity battery, DH500 can operate continuously for at least 20 hours in digital mode, meeting the needs of long work shifts.

  • Reliable Quality

    IP67 protection level, suitable for outdoor work. Competent in various harsh working environments with shock, vibration, and solar radiation.

  • Full Encryption

    Support 40/128/256bit basic private encryption to improve call security and avoid information leakage. 

  • Dispatching Services

    DH500 DMR base radio supports multiple dispatching services, such as registration, radio check, lone worker, and remote stun/revive to realize remote dispatching and meet daily work management needs.

  • Rich Services

    Based on an excellent platform, DH500 provides abundant services, such as VOX, and roaming; it can be connected to the dispatch console for remote management; advanced services such as call recording are available on a request basis.

Specifications of DH500 DMR Portable Radio


UHF1: 400-470MHz

VHF:   136-174MHz

Channel Capacity64*
Zone Capacity4*
Channel Spacing12.5KHz/20KHz/25KHz
Frequency Stability±0.5ppm
Operating Voltage7.4V
Battery Capacity2500mAh(standard)
Battery LifeAnalog: 16 Hours
Digital: 20 Hours
(5: 5: 90 working cycle, high power transmission)
Size (H x W x D)116.4x54.5x36.5mm (with 2500mAh battery, without antenna)
Weight275g (with 2500mAh battery and antenna)
LayoutTop: volume/switch knob x1, channel knob x1
Side: PTT key x1, programmable key x2, SOS key x1
External Interface18-pin waterproof interface, support audio/programming
EncryptionSupport 40/128/256bit basic private encryption
RF Power Output (Low) 1W
RF Power Output (High) 4W / 5W (VHF)
FM Modulation 12.5KHz: 11K0F3E / 20KHz: 14K0F3E / 25KHz: 16K0F3E
4FSK Digital Modulation12.5KHz Data Only: 7K60FlD&7K60FXD
12.5KHz Voice Only: 7K60FlE&7K60FXE
12.5KHz Voice and Data: 7K60F1W
Conducted/Radiated Emission -36dBm ≤1GHz, -30dBm > 1GHz
Modulation Limiting ±2.5KHz @12.5KHz/±4KHz @20KHz/±5.0KHz @25KHz
FM Hum and Noise -40 dB@l2.5KHz /-43dB@20KHz /-45 dB@25KHz
Adjacent Channel Power 60 dB@l2.5KHz /70 dB @20/25KHz
Audio Distortion≤3%
Audio Response + 1 ~-3dB(TIA603D)
Sensitivity (Analog) 0.18uV(12dB SINAD)
Sensitivity (Digital)0.18uV (5% BER)
Adjacent Channel Selectivity

60 dB@12.SKHz/70 dB@20/25KHz (TIA603A)

60dB@12.SKHz /70 dB@20/25KHz ( ETSI )
Intermodulation70 dB (TIA603D)
65 dB (ETSI)
Spurious Rejection70 dB (TIA603D)
70 dB (ETSI)
Co-channel Rejection -12~0 dB @12.5KHz/-8~0 dB @20/25KHz
Hum and Noise -40 dB@l2.5KHz /-43 dB@20KHz /-45 dB@2SKHz
Rated Audio Power0.5W
Max Audio Power2.0W
Rated Audio Distortion ≤3%
Audio Response + 1 ~-3dB (TIA603D)
Conducted Spurious Emission-57 dBm (TIA603D) 
Operating Temperature-30°C ~ +60°C
Storage Temperature-40°C ~ +85°C
ESDIEC 61000-4-2 (level 4) ±8kV (Contact) ±15kV (Air)
Dust and Water ResistanceIP67
ReliabilityAccording to MIL-STD-810 G



Accessories of DH500 DMR Portable Radio

2500mAh Li-ion Battery
2500mAh Li-ion Battery
Belt Clip
Belt Clip
Desktop Charger
Desktop Charger
Power Adapter
Power Adapter
8-way Charger Optional
8-way Charger Optional
C Style Earpiece
C Style Earpiece
Programming Cable
Programming Cable
Transparent Tube Earpiece
Transparent Tube Earpiece

Document Download of DH500 DMR Portable Radio

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