TGSL Question

[homefire]

Trying to help someone correct a none working build.

Other then a coil issues is there any COMMON causes / Mistakes that could cause constant Audio Tone when the detector is Idle. NO TARGET???

We will get it going but Never hurts to ask..

HF

[Davor]

Constant tone is a common effect you get when final op amp is not capable of handling large deviation from common mode on inputs. LM358 handles that fine.

[homefire]

Cool Beans . Doing this over the net with major time differential. LOL Have him doing the basics checking all power supplies from source to IC's and what not. Will keep that in mind after we get to following the signal train through the Amps. Thank You for the Heads Up.

HF