09-14-2009, 12:17 PM
I slid the .2 cap out of the coil wrapped around it (it meaures .28mf) and put some zip ties on the coil to keep it together. Then I attached a new .22 cap in place of the old one. Everything works exactly as before.
A replaced the .0015 cap with the .001 I had on hand. No change in anything, but I wouldn't expect one.
The radio has some hiss, probably from the CC resistors it uses. I probably won't worry about changing anything else, unless I reach a point where I want to rewire the entire circuit. A project not for now.
I wonder if there is a way, without using a sig gen, to tweak the two IF transformers slightly to optimize their tuning? i.e. work from the end of the circuit to the front, and adjust each on in turn until the station tuned sounds the loudest...or something like that?
A replaced the .0015 cap with the .001 I had on hand. No change in anything, but I wouldn't expect one.
The radio has some hiss, probably from the CC resistors it uses. I probably won't worry about changing anything else, unless I reach a point where I want to rewire the entire circuit. A project not for now.
I wonder if there is a way, without using a sig gen, to tweak the two IF transformers slightly to optimize their tuning? i.e. work from the end of the circuit to the front, and adjust each on in turn until the station tuned sounds the loudest...or something like that?
