Bird Electronics 8251 TERMALINE® Load Resistor

The Bird 8251 TERMALINE® Load Resistor stands out as a top-tier solution for RF testing and transmitter adjustments, offering a reliable and practically nonreflective termination. Designed for portability and ease of use, this 50-ohm coaxial termination requires no external power source or additional equipment, making it ideal for a variety of applications.

At the heart of its performance is a cylindrical film type resistor, meticulously immersed in a dielectric coolant for optimal durability and accuracy. The specially engineered tapered housing provides a linear reduction in surge impedance, ensuring a uniform and practically reflectionless line termination across a wide frequency spectrum from DC to 2.4 GHz. This precision not only guarantees accuracy but also enhances operational efficiency during testing and adjusting scenarios.

Key Features:

• Rugged and portable design suitable for high-power base station RF testing up to 2.4 GHz.
• Oil-assisted convection cooling mechanism ensures safe and continuous operation, capable of handling up to 1000W at full rated power.
• Includes LC or Type N connector installed for versatile connectivity.
• Low-profile housing designed with a convenient handle and rubber feet, perfect for stable operation in demanding environments.
• Operating temperature range of -40°C to +45°C, accommodating various working conditions.
• Connector options: QC type with Female LC typically supplied, with Female N provided unmounted for customization.
• Finished in a durable gray powder coat for enhanced longevity and aesthetics.
• Frequency range and VSWR performance:
  • DC to 1 GHz at 1.1 max
  • 1 GHz to 2 GHz at 1.25 max
  • 2 GHz to 2.4 GHz at 1.3 max
• Integrated load coolant capacity of 1.1 gallons (4.1 liters) of silicone oil for effective thermal management.
• Compact dimensions: 17 29/32" L x 8 1/2" H x 5 15/16" W (455 mm x 216 mm x 151 mm) for easy integration into various setups.
• Designed to operate in a horizontal position only, ensuring stability during use.
• Power rating of 1000 W continuous for robust performance in high-demand scenarios.
• Lightweight yet sturdy, weighing in at 25 lbs 8 oz (11.5 kg) for efficient handling.