CONTROL_TONE_GENERATOR

Published:2009/7/20 4:48:00 Author:Jessie | From:SeekIC

Uses NE566V PLL as tone generator, directly connected to microphone input of transmitter for activating loudspeaker in receiver being called. Operation is similar to that of paging units using selective call tones output level of PLL is adjusted so tone is same amplitude as voice.-K, Wyatt, Private Call System for VHF FM,Ham Radio, Sept,1977,p62－64



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/CONTROL_TONE_GENERATOR.html

Print this Page | Comments | Reading(3)