Attachment 4_Technical Specifications.pdf

This is a technical specifications document for the Bird 4480A Digital RF Wattmeter. The device is an element-free digital RF wattmeter designed to measure forward power, reflected power, return loss, and VSWR with high accuracy. It operates across a frequency range of 2 MHz to 1000 MHz with power measurement capabilities ranging from 1 watt to 10 kilowatts depending on the band, and provides measurement accuracy of ±4 percent of reading. The wattmeter features a nominal impedance of 50 ohms with a maximum VSWR of 1.2:1, minimum directivity of 25 dB, and maximum insertion loss of 0.1 dB. It supports both Continuous Wave (CW) and digitally modulated RF signals for accurate true average power measurements.

The specifications indicate the Bird 4480A is intended for RF system testing, maintenance, field verification, and laboratory measurement applications requiring high accuracy across broad operating frequencies and power levels. This equipment specification is associated with a Department of Agriculture Forest Service solicitation (12760426Q0102_PR_1172683) issued on July 13, 2026, for nine Bird 4480A Digital Wattmeter Kits (model TF4480AKIT). The solicitation is set aside for Total Small Business, with a response due date of July 20, 2026.