HEATON. A. R., STRUSZYNSKI, W., and BUCKING- HAM, J. Oct. 19, 1949, No. 26807. [Class 37] A radio-frequency wattmeter for measuring the power flowing in a co-axial line 1, 2 comprises a current indicator M, Fig. 3, fed by a pair of oppositely connected square law detectors...
It blends in with most radio gear, while the red pushbuttons stood out in my monochromatic ham shack. The attractive 2.5 × 1.75 inch backlit meter face has tick marks at 5 W; in 10 W steps from 10 to 200 W; and 25 W steps from 200 to 300 W. Multiply by 10 for the high ...