25-04-2012, 08:17 PM
(25-04-2012, 07:49 PM)Shaman Wrote: Hi, come on Lawrence, more details please....Alan.
I was afraid someone might say that, definately no pics!
Made this afternoon with junk/spare bits...6AC7 rf amp, 6AC7 det, 6F6 audio o/p.
A/E inductively coupled to tuned secondary which connects via 100pf to G1 of RF amp, anode of RF inductively coupled to tuned sec. which feeds G1 of the detector, the sig. gen. (VFO) is also fed to the same G1 via 4.7pf.
Anode of the Det. has audio choke as the load, capacitor couples from signal end of said choke to G1 of the single ended sound output via vol. control, usual grid,cathode,screen resistors used and caps for decoupling/coupling etc, currently running on 175v HT. Seperate tuning capacitors for the two tuned circuits as the coils are from old scrap sets and have different inductance values....
Lawrence.







