Re: KD8CEC Firmware S-Meter usage

Don, ND6T
 

Mark,

Ian's circuit is not DC blocked at the output of the LM386 so it will not be zero volts when there is no signal. The simple diode circuit is found here. If you use my AGC circuit attach the lead to the cathode of D2 which is J1 ( NOT J2 , Ralph ) on K5BCQ's kit. Even if you don't want AGC, the kit will provide a nice S meter amplifier and detector by simply connecting +5 volts, ground, and audio input. Then attach your wire from J1 to the S meter input lead. 73, Don

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