Retevis RT81 High Power Digital Handheld Radio with Earpiece Bundle (4 Pack)
- Long-Range Performance: High-performance antenna for powerful signal and extended range.
- Analog & Digital Modes: Compatible with both analog and digital, offering clearer sound and stable signals.
- Long Battery Life: A 2200 mAh battery provides 24+ hours of use (digital mode), perfect for all-day work.
- Clear Sound: Advanced DMR voice processing technology for crisp audio in noisy environments.
- Durable Design: The steel frame ensures drop resistance and durability.
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Retevis RT81 High Power Digital Handheld Radio with Earpiece Bundle (4 Pack)
Retevis RT81 is a durable, high-performance digital handheld radio designed for secure communication. With long battery life, crystal-clear sound, and versatile features, it’s ideal for professional security and demanding environments, such as school security and hotel management.
Digital/Analog Compatibility
Compatible with both analog and digital modes, the RT81 digital and analog radio combines the benefits of analog reliability with digital advantages like superior performance, longer battery life, and greater energy efficiency—all while reducing equipment replacement costs.
Dual Time Slot
The RT81 DMR radio offers three modes: simplex, repeater, and simplex dual time slot. The dual-time slot mode increases communication efficiency and extends both channel capacity and communication range.
Digital Encryption
The RT81 digital radio offers 10-bit encryption for secure communications, preventing eavesdropping and interference—vital for public safety.
Long Battery Life
With a built-in 2200 mAh battery, RT81 rechargeable radio offers up to 15 hours of operation in analog mode and 25 hours in digital mode, making it ideal for daily use.
High/Low Power Selection
The RT81 DMR handheld radio lets you switch between high power for long range and low power for saving battery life, offering flexibility for different situations.
Durable Construction
Built to withstand drops and harsh conditions, the RT81’s rugged design offers enhanced fall resistance, making it perfect for demanding security tasks.
Private/Group Calls
The RT81 digital two way radio supports both private and group calls, with customizable IDs and settings (frequency, time slot) to meet different communication needs.
Crystal Clear Sound
In noisy environments, such as security operations, clear sound is essential. Utilizing advanced DMR voice processing technology, the RT81 delivers exceptionally clear and high-quality audio, eliminating the need for strained communication.
VOX Hands-Free Operation
The integrated VOX (Voice Operated Exchange) feature enables voice-activated transmission, freeing your hands for other tasks. The included covert acoustic tube earpieces help improve the sound quality and also ensure the call information privacy.
Spec
| Model | Retevis RT81 |
| Frequency | UHF 400-470MHz |
| Mode | Digital/Analog |
| Power | 10W |
| Channel capacity | 32 Channels (2 zones, 16 Channel Per Zone) |
| Zone | 2 |
| Working voltage | 7.4V |
| Working temperature | -30℃～+60℃ |
| Storage temperature | -40℃～+60℃ |
| Continuous working time | Analog: 15 hours, Digital: 25 hours |
| Battery capacity | 2200mAh |
| Weight (include battery) | 9.32oz/264g |
| Radio size (include battery) | 5.48x2.51x1.45in (139x64x37mm) |
| Receiver | |
| Channel spacing | 12.5/25KHz (Digital mode 12.5KHz) |
| Frequency stability | ±1.0ppm |
| Analog sensibility | 0.35µV/-116dBm(20dB SINAD) |
| 0.2µV/-120dBm (Typical) | |
| Digital sensibility | 0.3µV/-117.4dBm (BER5%) |
| 0.7µV/-110dBm (BER1% | |
| Spurious response | TIA03C:65dB |
| ETSI:65dB | |
| Adjacent channel selectivity | TIA603C:60dB@12.5KHz |
| ETSI:60dB@12.5KHz | |
| Spurious response suppression | TIA603C:70dB ETSI:70dB |
| Receiving spurious emissions | ≤57dBm@1GHZ,≥47dBm |
| Blocking | 84dB |
| Rated audio power | 1W |
| Audio response | +1dB—-3dB |
| Rated audio distortion | ≤3% |
| Transmitter | |
| Channel spacing | 12.5/25KHz (Digital mode 12.5KHz) |
| Frequency stability | ±1.5ppm |
| TX power | Low:1W High:10W |
| FM noise | -40dB@12.5kHz |
| Spurious emission | ≤36dBm@1GHz,>-30dBm |
| Adjacent channel selectivity | -60dB@12.5KHz |
| FM modulation mode | 12.5KHz:11FOF3E |
| 4FSK digital modulation mode | 12.5KHz(data only)7K60FX |
| 12.5KHz(data+voice)7K60FX | |
| Modulation limit | 2.5KHz@12.5KHz |
| Audio response | +1dB—-3dB |
| Rated audio distortion | ≤3% |
| Digital protocol | ETSITSI02361,-1,-3 |
| Vocoder type | AMBE+2TM |
Feature
● 32 Channels (2 Zones), 64 Digital Contacts
● Digital/Analog Double Modes
● Private Call, Group Call, All Call (digital mode)
● Wideband/Narrowband Selection
● TX high/Low Power Selection
● Encryption Function
● Dual Time Slot
● Busy Channel Lockout
● TOT (Time-out-Timer)
● Repeater/Talk Around
● Side Key Programmable
● Battery Saving Mode
● Tail Elimination
● VOX Hands-Free
● Squelch 1~9 Level
● Dual Time Slot