DUAL_RANGE_RF_WATTMETER

Published:2009/6/28 23:07:00 Author:May | From:SeekIC

Uses circuit which is not frequency-sensitive, so calibration can be accurate over wide frequency spectrum, Ranges are 0-1 and 0-10 W. L2 is 7-50-2 toroid wound almost full with No. 28 enamel, leaving only room for 2-tum link L1.C1 and C2 are 3-20 pF trimmers. Article covers calibiation and use and gives table for reading SWR by comparing watts FORWARD with watts REFLECTED，-A，Weiss、The Silk-Purse In-Line Wattmeter、CQ，May 1977 p 50-52 and 74-75



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Measuring_and_Test_Circuit/DUAL_RANGE_RF_WATTMETER.html

Print this Page | Comments | Reading(3)