| Product Type | UHF Wireless Beltpack System |
| Form Factor | Beltpack |
| Channels Supported | 2 |
| Frequency Band | Band F3 |
| Included Accessories | 4F Headset |
| Power Source | Battery |
| Battery Quantity Supported | 6 |
| Mounting Type | Wearable / Belt-mounted |
| Intended Application | Broadcast, Event Production, Industrial Team Communication |
Bosch TR-825 F3 R4 US UHF Beltpack, 2CH, Band F3, 4F Headset

Key Benefits
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- Optimized for professional communications in portable audio setups requiring UHF clarity and dual channels.
- TAA compliance ensures alignment with federal procurement standards.
- Compact, U.S.-made design balances durability and portability for field operations.
Product Overview
The Bosch TR-825 F3 R4 US offers a professional-grade UHF beltpack system configured with dual-channel functionality in Band F3 frequency and accompanied by a 4F headset. Tailored for portable audio use, this system achieves dependable wireless communication for team coordination in broadcast, event production, and industrial operations. Engineered with a compact design—measuring 3.75 inches wide, 5.35 inches high, and 2.02 inches deep—it is optimized for mobility and long-term wearability on active users.
With a power configuration supporting up to six installable batteries, the unit ensures extended operation time in field or live environments. Additionally, TAA compliance makes it suitable for public-sector and federally regulated applications requiring supply chain transparency. Proudly manufactured in the United States, the unit underscores Bosch's commitment to quality assurance and regulatory alignment.
The TR-825 F3 R4 US stands as a reliable solution for audio professionals demanding durability, ergonomic design, and regulatory compliance. It integrates easily into existing AV and communication setups, making it a solid investment for users who require portable UHF audio functionality without compromise.
Specifications
Product Overview
Wireless Features
| Wireless Technology | UHF |
| Radio Frequency Range | 482–518 MHz (Band F3) |
| Number of Channels per Band | 2 |
| Antenna Type | Internal or Detachable (Headset-integrated) |
| Wireless Modulation | FM |
Compliance & Origin
| TAA Compliant | Yes |
| Country of Origin | United States |
| Certifications | FCC Part 74, RoHS |
| Regulatory Approval | CE, FCC ID |
Advanced Security Features
| Signal Encryption | No |
| Interference Suppression | Yes – UHF frequency agility minimizes interference |
| Noise Reduction | Built-in audio processing for noise suppression |
Interfaces
| Audio Input Connector | Proprietary headset connector |
| RF Interface | UHF Wireless |
Physical & Environmental
| Width | 3.75 in |
| Height | 5.35 in |
| Depth | 2.02 in |
| Weight | Approximately 0.75 lb (without batteries) |
| Housing Material | Durable molded plastic |
| Operating Temperature | -10°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Operating Humidity | 0 – 90% non-condensing |
Cloud Management & Licensing
| Cloud Management | |
| License Requirement | May require license subject to FCC rules for wireless microphone use |