Franco's LRL ver_4046

[enjoykin4]

Originally Posted by Geo

At my lrl at pin9 there is signal 11.6v p-p. Between pin9 and c3 i connected a trimer 10k and adjusted it so at c3 to have 900mv p-p. Now it seems works very good but i have a mysterious problem. If pcb is out of shielding box then when i touch the antenna the led turns on. If pcb is inside the shielding box then if i touch the antenna and the led is on, it turns off. With other words it works reverse!!!.
Who is the right???

Regards

Hi Geo

Good news from you!. Tell me more how your lrl work and show us your oscillograf snapshots (envelopes) in different test points.

My the question: at which side of C3 you have connected a trimer 10k - side to base of T1 or side to Pin (3 and 4 ) ?

900 mVpp - is probably too high amplitude for "scalar" mixer Tr2-L1-C11-C10. Big VCO amplitde can fully suppress "Gold Scalar signals" - (oversaturate gold and silver signals).

Reg.
Enjoykin4