Active Ferrite Aerial Project

[pwdrive]

Yes the tuning will be sharp when the Q multiplier does it's stuff, it's a bit like a regen radio, if you find it bites a bit to early during the Q pots rotation you could try increasing the distance between the single turn feedback winding and the tuned winding, the arrangement in that circuit is very similar to a pentode regen with screen grid regen control.

Sound as though you are nearly there with it John.

Lawrence.