Walkie Talkies

Hytera PD685 Ex

DMR Intrinsically Safe Portable Radio

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Minimum Order Quantity:10 units

The Hytera PD685 Ex is a DMR intrinsically safe portable radio designed for hazardous environments requiring ATEX certification. With compact metal construction (122 x 54 x 27 mm, 310g), IP67 protection, and MIL-STD-810G compliance, this radio delivers reliable performance in extreme conditions. The 1.8-inch color LCD display (160x128 pixels) provides clear information visibility, while the 1500mAh Li-ion battery ensures 16+ hours of digital operation. Supporting TDMA dual-slot technology and 1024 channel capacity, the PD685 Ex offers spectrum-efficient communication for oil & gas, chemical, mining, and other hazardous location applications.

ATEX Certified (Ex ib IIB T3 Gb)

IECEx Certified (Ex ibD 21 T195°C Db)

IP67 Rated

MIL-STD-810 C/D/E/F/G

DMR Tier II Compliant (ETSI TS 102 361)

CE Certified

FCC Compliant

Download Datasheet (PDF)

Key Features

Intrinsically Safe Certified

ATEX and IECEx certified for use in explosive atmospheres. Ex ib IIB T3 Gb and Ex ibD 21 T195°C Db ratings ensure safe operation in Zone 1/21 hazardous locations. Temperature range -20°C to +60°C for challenging environments.

Compact Metal Design

Ultra-compact chassis (27mm depth) with high-quality aluminum metal frame. Lightweight at only 310g for comfortable extended carry. Ergonomic design with intuitive button layout for one-handed operation even with gloves.

Extended Battery Life

1500mAh standard Li-ion battery delivers 16+ hours of digital operation or 11 hours analog. Optional 2000mAh battery extends usage to 20 hours digital. Smart battery management with LED status indicators.

Superior Spectrum Efficiency

TDMA dual-slot technology doubles channel capacity within same bandwidth. Pseudo Trunk and XPT Digital Trunking support for scalable deployment. DMR Tier II compliant with backward analog compatibility.

Enhanced Frequency Range

UHF: 400-527 MHz wide frequency coverage supports diverse operational requirements. VHF: 136-174 MHz option available. ±0.5 ppm frequency stability ensures reliable communication across temperature extremes.

Advanced Features

Optional GPS support for AVL and telemetry applications. AES128/AES256 encryption for secure communications. Man-down function, lone worker, and emergency call for personnel safety. Expansion interface for custom applications.

Technical Specifications

Product SeriesPD6 Series DMR Handheld Radios

ModelPD685 / PD685G (GPS variant)

Frequency RangeVHF: 136-174 MHz / UHF: 400-527 MHz

Operating ModesDMR Tier II (ETSI TS 102 361-1/2/3), Simulcast, XPT Digital Trunking, Analog

Channel Capacity1024 channels

Zone Capacity64 zones (PD665/PD685), 16 channels per zone

Channel Spacing12.5/20/25 kHz (analog) / 12.5 kHz (digital)

Operating Voltage7.4V DC (nominal)

Battery Type1500mAh Li-ion (standard) / 2000mAh Li-ion (optional)

Battery Life (Analog, 5-5-90)Approx. 11 hours (1500mAh)

Battery Life (Digital, 5-5-90)Approx. 16 hours (1500mAh) / 20 hours (2000mAh)

Display1.8-inch color LCD, 160x128 pixels, 65,536 colors, 4 lines

Programmable Keys3 programmable keys (PD685)

Dimensions (H x W x D)122 x 54 x 27 mm (without antenna)

WeightApprox. 310g (with antenna and standard battery)

Protection RatingIP67 (dust-tight, immersion up to 1m for 30 min)

Military StandardMIL-STD-810 C/D/E/F/G (shock, vibration, temperature)

ESD ProtectionIEC 61000-4-2 Level 4, ±8kV (contact), ±15kV (air)

Operating Temperature-30°C to +60°C

Storage Temperature-40°C to +85°C

Relative HumidityMIL-STD-810 C/D/E/F/G compliant

Antenna Impedance50Ω

Frequency Stability±0.5 ppm

RF Power OutputVHF: 1/5W (adjustable) / UHF: 1/4W (adjustable)

Modulation (Analog)11K0F3E @ 12.5kHz / 14K0F3E @ 20kHz / 16K0F3E @ 25kHz

Modulation (Digital)4FSK: 7K60FXD (data only) / 7K60FXW (data and voice)

Digital VocoderAMBE+2™

Spurious and Harmonics-36dBm (<1GHz) / -30dBm (>1GHz)

Modulation Limiting±2.5kHz @ 12.5kHz / ±4.0kHz @ 20kHz / ±5.0kHz @ 25kHz

Hum and Noise (Transmitter)40dB @ 12.5kHz / 43dB @ 20kHz / 45dB @ 25kHz

Adjacent Channel Selectivity (Tx)60dB @ 12.5kHz / 70dB @ 20/25kHz

Audio Sensitivity (Tx)+1 to -3 dB

Audio Distortion (Tx)≤3%

Receiver Sensitivity (Analog)0.22 μV (12dB SINAD) / 0.4 μV (20dB SINAD)

Receiver Sensitivity (Digital)0.22 μV (BER 5%)

Adjacent Channel Selectivity (Rx)60dB @ 12.5kHz / 70dB @ 20/25kHz (TIA-603/ETSI)

Intermodulation (Rx)70dB @ 12.5/20/25kHz (TIA-603) / 65dB (ETSI)

Spurious Response Rejection70dB @ 12.5/20/25kHz (TIA-603/ETSI)

Hum and Noise (Rx)40dB @ 12.5kHz / 43dB @ 20kHz / 45dB @ 25kHz

Audio Power Output0.5W

Audio Distortion (Rx)≤3%

Conducted Spurious Emission<-57dBm

GPS (PD685G only)Time to first position <1 min (cold) / <10 sec (warm), Horizontal accuracy <10m

Explosion ProtectionEx ib IIB T3 Gb, Ex ibD 21 T195°C Db

Temperature ClassT3 (max surface temp 200°C), Ambient: -20°C ≤ Ta ≤ +60°C

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