Bird 8164 Termaline RF Coaxial Load

The Bird 8164 is a 50-ohm coaxial load resistor designed for precise signal termination in RF and microwave systems. It operates across a broad frequency range and offers robust power handling capabilities. Its construction emphasizes durability for reliable performance in both laboratory and field environments.

### Technical Specifications

* **Product Type:** Coaxial Load Resistor
* **Series:** Termaline 8000 Series
* **Manufacturer:** Bird Electronic Corporation
* **Impedance:** 50 Ohms
* **Frequency Range:**
* DC to 2400 MHz (2.4 GHz)
* DC to 1000 MHz with VSWR 1.1
* 1000 MHz to 2500 MHz with VSWR 1.2
* DC to 4 GHz (some sources indicate up to 4 GHz)
* **Power Handling:**
* 100 Watts continuous
* Some sources mention 5 Watts, but this appears to be a misinterpretation or reference to a different Bird product line (e.g., Bird’s 5 Watt RF Attenuator Series)
* **Maximum VSWR:**
* 1.1:1 from DC to 1000 MHz
* 1.2:1 from 1000 MHz to 2500 MHz
* **Connector Type:** N-Female (QC)
* **Cooling:** Air-cooled, convection-cooled, passive dissipation
* **Environment:**
* Operates in a dust and vibration-free environment
* Recommended ambient temperature range: -40°C to +45°C (-40°F to +113°F)
* Requires at least six inches of clearance around the unit for unimpeded convection airflow
* **Construction:**
* Rugged construction for laboratory and field environments
* Self-contained unit, requiring no outside power source or additional equipment
* Practically nonreflective termination
* Fully shielded to minimize extraneous radiation and interference
* **Material Warning:** Contains a resistor substrate made of beryllium oxide, which is potentially toxic and requires disposal in accordance with hazardous material statutes. Do not attempt to repair; return to Bird Electronic Corporation
* **Weight:** Approximately 5 lbs (Size and weight information may vary; consult specific datasheets for exact dimensions)

### Electrical Characteristics

* **Impedance:** 50 Ohms
* **Power Dissipation:** Capable of absorbing maximum rated RF power continuously and dissipating it as heat
* **Resistance Value:** Checking with an ohmmeter or resistance bridge with an accuracy of one percent or better at 50 ohms is useful for verifying the resistance value of the RF section assembly

### Interfaces

* **RF Connector:** N-Female (QC)

### Physical Characteristics

* **Dimensions:** Specific dimensions are not consistently detailed across all sources, but the unit is described as portable and light enough for direct attachment to other RF equipment or to be set on a workbench. Clearance of at least six inches around the unit is recommended for heat dissipation.
* **Mounting:**
* Generally light enough to be attached directly to mating RF connectors of devices like Bird Thruline Wattmeters or placed on a workbench.
* Model 8163 (electrically and physically identical except for mounting holes) has four mounting holes with Heli-Coil inserts for 8-32 screws.
* **Finish:** Housings for 100 Watt models are deeply slotted and painted black with a lusterless finish to improve heat dissipation.
* **Cooling Fins:** Radiator fins require keeping clean for heat transfer efficiency.

### Compatibility

* **System Integration:** Designed for precise signal attenuation in RF and microwave systems. Suitable for testing and adjusting transmitters under non-radiating conditions. Can be used as a substitute antenna.
* **Connections:** Requires a 50-ohm coaxial cable equipped with a suitable mating plug. Minimize cable length and avoid adapters for best performance.
* **Related Products:** Compatible with other Bird Thruline Wattmeters.

Why Choose Aumictech for the Bird 8164?
At Aumictech, we specialize in supplying high-end RF and microwave test equipment. Whether you need precise signal termination, robust power handling, or reliable performance in challenging environments, our team ensures the Bird 8164 delivers maximum performance for your application.