Product Type | UHF Beltpack Transmitter |
Audio System Type | Portable Audio |
Channels | 2 |
Frequency Band | Band A3 |
Headset Compatibility | 5-meter headset support |
Form Factor | Beltpack |
Power Source | Battery powered |
Battery Installed Qty | 6 |
BOSCH TR-825 A3 5 US UHF Beltpack, 2CH, Band A3, 5M Headset



Key Benefits

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- Ideal for portable audio professionals needing dual-channel, UHF communication in the A3 band.
- Compact, battery-powered design enables high mobility and ease of deployment in field conditions.
- TAA compliance and U.S. origin make it suitable for government and contract-sensitive environments.
Product Overview
The BOSCH TR-825 A3 5 US UHF beltpack is engineered for professional portable audio performance, offering a two-channel configuration compatible with Band A3 frequencies. Designed with compact dimensions—3.75 inches wide, 2.02 inches deep, and 5.35 inches high—it supports a 5-meter headset connection, delivering flexibility for users in dynamic environments such as live productions, events, and field communications.
This unit is powered by six batteries, providing robust operation without constant power supply dependency, making it ideal for on-the-go use. As a product manufactured in the United States and marked TAA compliant, the TR-825 A3 5 US is particularly well-suited for government contracts or sectors requiring Trade Agreements Act compliance.
While specific signal processing and compatibility details are not provided, the inclusion under the category of professional portable audio and telephony accessories indicates its orientation toward high-performance voice transmission and accessory integration. This beltpack is a valuable component for teams needing streamlined communication tools under demanding operation conditions.
Specifications
Product Overview
Wireless Features
Transmission Type | Analog UHF |
Operating Frequency Range | Band A3 (specific frequency range varies by region) |
Wireless Channels Supported | 2 |
Modulation | FM Analog |
Wireless Range | Dependent on environment and paired receiver (typically up to 100 meters line-of-sight) |
Antenna Type | Internal or fixed external (model-specific) |
Compliance & Origin
Country of Origin | United States |
TAA Compliance | Yes |
RoHS Compliance | Yes |
FCC Certification | Yes |
Industry Approvals | FCC Part 74, UL Listed (where applicable) |
Advanced Security Features
Encryption | Not supported (analog transmission) |
Authentication Methods | None (analog device) |
Interference Prevention | Selectable frequency channels to avoid interference |
Interfaces
Audio Input Connector | Headset Jack |
Wireless Interface Type | UHF RF Transmission |
Physical & Environmental
Width | 3.75 Inch |
Depth | 2.02 Inch |
Height | 5.35 Inch |
Mounting Style | Belt clip |
Construction Material | High-impact plastic or metal alloy (model-specific) |
Weight | Dependent on batteries; approximately 0.5–0.8 lbs |
Operating Temperature | 0°C to 50°C (32°F to 122°F) |
Storage Temperature | -20°C to 60°C (-4°F to 140°F) |
Humidity Range (Operating) | 5% to 95% non-condensing |
Cloud Management & Licensing
Remote Management | No cloud management (analog device) |
Licensing Requirements | May require FCC license for UHF operation depending on jurisdiction |
Frequency Coordination Support | Manual configuration (via receiver/base unit) |