43 Series Wattmeters Slugs and Case Measure with Confidence. Built to Last. For over 70 years, Bird’s 43 Series Wattmeters have defined what RF professionals expect from their tools: rugged reliability, field-ready simplicity, and precision you can trust under pressure. From military bases to broadcast towers, from mobile radio shops to industrial facilities—the 43 Series is there, doing the work. Built around our field-proven Thruline® design, these portable insertion-type wattmeter’s deliver direct, accurate measurement of forward and reflected RF power—without complex setup or calibration. 1 x 100 W 2-30 MHz 1 x 50 W 100-250 MHz 1 x 50 W 200-500 MC 1 x 10 W 100-250 MHz 1 x 10 W 200-500 MHz Price is Firm shipping is extra VE7HJ