Showing posts with label relative. Show all posts
Showing posts with label relative. Show all posts
Monday, September 23, 2013
TV Relative Signal Strength Meter
This circuit was designed to assist the installation of TV antennas. The signal is monitored using a small portable TV set and this circuit monitors the output of the TVs FM detector IC via a shielded lead. To initially calibrate the meter, adjust trimpot VR2 to zero the meter. Trimpot VR1 is a sensitivity control and can be set for a preset reading (ie, 0dB) or can be calibrated in millivolts. Rotating the antenna for a minimum reading on the meter (indicating FM quieting) gives the optimum orientation for the antenna.
Circuit diagram:
TV Relative Signal Strength Meter Circuit Diagram
Author: Ted Sherman Copyright: Silicon Chip Electronics
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