Re: KD8CEC Firmware S-Meter usage
toggle quoted messageShow quoted text
Yes, J1 and NOT j2.
Anyway , the circuits works very well for AGC and the s-meter function.
Thanks for it and K5BCQ for putting the kit together at his cost.
On Mon, Jun 11, 2018 at 5:12 AM, Don, ND6T via Groups.Io <nd6t_6@...>
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
Join BITX20@groups.io to automatically receive all group messages.