Simple Wideband RF Millivoltmeter

Published:2012/12/4 23:55:00 Author:muriel | Keyword: Simple Wideband , RF Millivoltmeter | From:SeekIC

Professional test equipment is expensive to buy or hire. But the opportunity is here as below, to emulate a commercial RF millivoltmeter in cheap and simple terms, by its DC output driving a digital multimeter display. In lieu of access to a radio communications test set, frequency bandwidth response can only be estimated as being good to a few hundred Mhz and an input level range from 1mV to a couple of volts rms. Perhaps a reader giving feedback to CXI could firm up these estimates with proper lab kit. So the finished unit will do a satisfactory job for hobby use in fault tracing, gain measurement and general radio test work. Don't forget to halve the indicated DMM reading for the true rms input! Please note this unit is NOT intended to measure RF power, as its sensitive components would be destroyed by the inputting of high RF voltages.



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