AUDIBLE_SWR_DETECTOR_ADAPTER

Published:2009/6/18 2:39:00 Author:May | From:SeekIC

This SWR detector audio adapter is designed specifically for blind or vision-impaired atrtateurs, but anyone can use it. Instead of using a meter (or meters) to indicate antenna system forward and reflected voltages, this adapter generates two tones with frequencies that are proportional to the re-spective voltages. The tones are fed to a pair of stereo headphones (the miniature types are ideal) so that one ear hears the forward-voltage tone and the other ear hears the reflected-voltage tone. Thus, tuning up a transmitter is simply a matter of tuning for the highest-pitched tone in the left ear and the lowest-pitched tone in the right ear.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/Analog_Circuit/AUDIBLE_SWR_DETECTOR_ADAPTER.html

Print this Page | Comments | Reading(3)