Hytera PD355LF Licence Free Digital Two Way Radio Professional Walkie Talkie

Licence-free digital two-way radio

The innovative licence-free handheld digital mobile radios from Hytera were among the rst in the world. They operate in 446MHz frequency range, and were developed in accordance with the open DMR standard. Their compact design and intuitive operation make these DMR radios the ideal companion for day-to-day business.

The open DMR standard

Digital Mobile Radio (DMR) is an open standard for professional mobile radio (PMR), developed by the European Telecommunications Standards Institute (ETSI).
DMR systems use a channel range of 12.5 kHz and are compatible with the frequency spectrum of analogue mobile radio. As a result, mobile radio solutions based on the DMR standard enable a simple and cost-efficient migration from analogue to digital technology.

The DMR standard currently differentiates between three graduations in terms of functionality and performance. Licence-free DMR radios from Hytera correspond at
DMR Tier I. Products in accordance with DMR Tier I are used for simple radio communications in the 446-MHz band, with a maximum transmitting power of 0.5
watts (licence-free). For users who require a higher scope of functionality, Hytera also has both conventional and trunked digital mobile radio systems within our product portfolio.

PMR446 – Licence-free radio for everyone

PMR446 radios can be operated by any user, with no need for proof of identification or a radio licence. The UHF frequency range from 446.0 to 446.2 MHz is assigned to these licence-free radios, whereas the range from 446.0 to 446.2 MHz is reserved for analogue and digital applications respectively. 'PMR' refers to Private Mobile Radio. PMR446 radios feature a permanent antenna with maximum transmitting power of 0.5 Watts. Our digital PMR446 radios combine the properties of citizens' band radio with the new digital mobile radio standard. With this unique combination, you receive licence-free radios that also has the extensive functionality of professional digital mobile radio, straight out of the box.

Radio Features

Frequency range

UHF: 446,0 – 446,2 MHz

Supported operating modes

• DMR Tier I (license-free DMR)
• PMR446 analogue mobile radio
• DMR Tier I in acc. with ETSI TS 102 361-1/2/3

Channel capacity

32

Zone capacity

16 (in condition as supplied to the customer 3 zones with 32 channels
precongured)

Channel spacing

12.5 kHz (analogue, digital)

Battery life

(5-5-90 duty cycle, high transmitting power, standard battery)

approx. 12 hours (digital)

Standard battery

2000mAh (lithium-ion battery)

Transmitting power

0.5 W

Frequency stability

± 0.5 ppm

Antenna impedance

50 Ω

Digital vocoder type

AMBE+2™

Operating voltage

3.7 V

Dust and water protection

IP54

Shock and vibration resistance

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

Operating temperature range

- 30 °C to + 60 °C

Storage temperature range

- 40 °C to + 85 °C

Dimensions (H × B × T)

123 × 58 × 23 mm 

Weight

approx. 160 g