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SR150U 400MHz-480MHz 5W UHF Analog walkie talkie module

DWM25011601

SR150U is a high-power wireless voice intercom and long-range data transmission module. Based on automatic power tracking technology, it maintains consistent transmission power across the entire frequency band.

$19.00
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Description

The SR150U is the industry's first compact, high-power wireless voice intercom and long-range data transmission module. Based on automatic power tracking technology, it maintains consistent transmission power across the entire frequency band.

The module integrates a high-performance RF transceiver chip, microcontroller, and RF power amplifier. External controllers can set module parameters and control transmission/reception through standard UART (TTL level) communication. The module only requires an external antenna, microphone, and audio amplifier to form a complete intercom or data radio station. Module parameters can be saved after power off, and no external microcontroller is needed for simple applications.

Features

Digital signal processing-based FM demodulation technology

Automatic power adjustment technology for consistent transmission power across the frequency band

Frequency range: 400MHz - 480MHz

Selectable frequency steps: 5K/6.25K/12.5K/25K

RF output power: 5W/2.5W selectable

Voice encryption (frequency hopping) function: (7 options)

SMS messaging (remote control, data transmission) capability

Received Signal Strength Indicator (RSSI) query

DTMF transmission and demodulation function (available upon custom request)

Built-in CTCSS (38 groups) and CDCSS (83 groups) encoding/decoding, supports normal and inverse phase

Automatic tail tone elimination

Digital volume control: adjustable (levels 1-9)

Voice-activated hands-free sensitivity: adjustable (levels 0-8)

Squelch level: adjustable (levels 0-8)

Microphone sensitivity adjustment: (levels 1-8)

Transmission timeout (TOT): settable 1-9 minutes

High receiving sensitivity: -121dBm

Ultra-low power consumption (sleep mode): 0.1µA

Operating voltage range: 5V-8.4V, recommended 7.4V-8.4V, power supply must provide over 2.5A current

Dimensions: 32.5 × 52 × 3.5mm

Reference communication distance: 5-8 kilometers in open areas (actual communication distance depends on transmission power, receiving sensitivity, antenna length/placement/matching, usage environment, and other factors)

Applications

Portable, vehicle-mounted intercom and paging systems

Long-range wireless remote control and data transmission systems

Elevator intercom, wilderness communication, drones, and other applications requiring ultra-long-distance communication

Pin Definition:

Pin name No function
description
GND 1,2,3,4,5,6 GND
VBAT 78 Power supply positive(+5.5to +8.4V)
Recommended operating voltage+74 to+84V
GND GND
PD 10  Control pin of the module power supply. O power
off;1:power  on
The high-level module  must  be  connected  to
work
AF OUT 11  Audio output
SQ/SPK-EN 12  Receiving status indication.0 receiving 1:no reception
TX-LED 13  Transmit status indication; Active high
HL 14  Transmit power selection, Suspended: high power;0:low power
PTT 15  Transmit/receive Control pin,1=receive,0=transmit
MIC 16  MIC input(audio input)
RXD 17  Asynchronous  serial  interface(receiving
data  interface)
TXD 18  Asynchronous  serial  interface(
transmitting  data  interface)
GND 19  GND
VCC 20  The power supply voltage of the
programming  port, floating
NC 21,22,23,24,25 programming  port,
floating
ANT 26  antenna port, RF input/output

Useful Link:

AT Command for UHF/VHF Walkie Talkie radio module

Product Details
DWM25011601
300 Items
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SR150U 400MHz-480MHz 5W UHF Analog walkie talkie module

SR150U is a high-power wireless voice intercom and long-range data transmission module. Based on automatic power tracking technology, it maintains consistent transmission power across the entire frequency band.

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