Vnd

Fig. 4. Care must be used to observe battery polarity¬ę

constant-k low pass filter

Fig. 4. Care must be used to observe battery polarity¬ę

constant-k low pass filter

frequency

2 900 hz

Fig. 5. Operating characteristics of discriminator.

output of the unit), where only the mark or the space is left. The other one of the two signals will be sucked out or greatly attenuated by the tuned circuit trap of the discrim-

r for ess* apt satellite reception

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