Full-duplex radio device for sports, industrial operations, construction, event planning, search and rescue and more.

Yapalong4000 Features and specifications

Download User's manual

Yapalong is a full-duplex radio, which means that you can talk and listen on the same channel simultaneously, and there is no need for push-to-talk buttons. It requires no base station or master, making the communication uniquely peer-to-peer. The digital communication is real-time and also encrypted, while providing exceptional clarity for all users. With Yapalong, up to 8 users can talk simultaneously with unlimited number of listeners. Several groups can join together, to create a larger group. It has a range of 300 – 900 meters and 10 hours talk-time and available in 900MHz and 800MHz models. Yapalong is widely used by soccer, rugby, football and hockey professionals globally. The product is used in many applications including sports, industrial operations, construction, event planning, camping, search and rescue, combat, firefighting, policing and much more.

Radio technology

AM model: 900 MHz (Americas, Australia, UK)
EU model: 800 MHz (Europe, Asia, Africa)
Unlicensed ISM band
Auto channel selection
FSK digital modulation

Group size

AM model: 8 talkers maximum
EU model: 4 talkers maximum
Unlimited listeners

Wireless network

No master TDMA/Peer-to-peer


Up to 900 meters


164mm x 64mm x 22mm

Group size

AM model: 8 talkers maximum
EU model: 4 talkers maximum
Unlimited listeners


Rating: 27dBM/500 mW
Source: Lithium polymer, 3.7V, 1700 mAh
Efficiency: Over 8 hours


Temperature: -20°C - ~50°C
Humidity: 30% - 95% non condensing


IP rating: IP54
Lead free, RoHS
FCC certification, FCC ID: UJW-4000
Industry Canada certification, IC: 6695A-4000

8 users max for AM model and 4 users max for EU model Up to 900-meter line-of-sight range
Fully charged battery lasts over 8 hours
Encrypted transmissions
High sound quality
Lightweight, compact

Some accessories are included. Please see the user’s manual for details. Armband kit is included; a plastic carrying case is included when ordering 4 or more radios. Starting October 01, 2015, the default Boom-Mic headset is replaced by Boom-Mic II headset.

Warranty Period

Yapalong4000 unit – 1 year from date of purchase, covers manufacturing defects and product failure under normal usage, following instructions as described in the user’s guide.

Return policy: full refund if no damage within 7 days, excluding shipping time either way.