Hi All
this is my Christmas gift
it's another version of my Lrl more sensitive but less difficult to build. The oscillation comes from a CD4046 and we measure the phase change between the VCO and the output of the amplifier stage (TR2-TR3 and TR4). As antenna you can use a stylus or (better for me) a coil antenna. The capacitors C8 and C9 are connected in series for a single 0.5 pF capacitor (I think difficult to find). The power stage is the same of the other Lrl. In this simplified version there is only a led but is better to use more leds, I use a LM3914 to drive ten leds. The frequency is in the range 2.8 - 3.0 Mhz with the P1 cursor close to + 12V. Also the P2 cursor is close to positive and this means a small signal to input amplifier stage.
Best Regards