DMR828 2W High Power Wireless Digital Walkie Talkie Interphone Module 400-470 MHZ
Tax included.
Introduction:
DMR828 is a 2W long distance all-in-one DMR walkie talkie module. Only need external power supply and speaker, can be used as a small digital walkie-talkie with 16 frequency channels. Simplified interface and Ultra small size make this module widely used in various applications and conveniently embedded into various handheld device
Feature:
UHF band: 400~470 MHZ
Open distance is 8 kilometers
High power 2W, low power 0.5W
High receiving sensitivity: -124dBm
Error rate as low as 1% at -121dBm
Transmit receive frequency independent
Bandwidth 12.5 / 25 KHz
DMR (digital intercom) / analog intercom
Support SMS sending function
Built-in EEPROM, important data power-down save
Stable with 1ppm TCXO crystal
51-level CTCSS analog sub-audio code
166-level CDCSS digital sub-audio
9-level adjustable volume
Application:
Small professional walkie talkie
Invisible intercom system
Building community security system
Sport products
Handheld / Pocketable device
Audio surveillance system
| Parameter | Test Conditions | MIN. | Typical | MAX. | Unit |
| Operating voltage range | 3 | 4 | 5 | V | |
| range of working temperature | -20 | 25 | 60 | ??/span> | |
| Operating frequency range | 400 | 470 | MHZ | ||
| Serial port baud rate | 9600 | bps | |||
| Current consumption | |||||
| Sleep current | 75 | uA | |||
| Receiving current | < 135 | mA | |||
| Emission current (high power) | ?�@VCC=5.0V,2W | < 1.1 | A | ||
| Emission current (high power) | @VCC=4.0V, 1.5W | < 950 | mA | ||
| Emission current (low power) | ?�@VCC=4.0V,27dBm | < 500 | mA | ||
| Transmit power (high power) | @VCC=4.0V | 1.5 | W | ||
| Transmit power (low power) | 500 | mW | |||
| Mike input voltage | 0.1 | 1.6 | Vpp | ||
| Receiving sensitivity | -124 | dBm | |||
| Receive error rate (DMR system) | @ -121dBm | 1 | % | ||
| Audio output power | 2 | W | |||
| Audio output impedance | 8 | Ohm | |||
Package includes:
1 x Module
1 x USB cable
1 x Speaker
Functions descriptions:
DMR828 has default 16 channels, CH0~CH7 in DMR mode, CH8~CHF in analog mode. All