05-20-2016, 10:55 AM
(05-19-2016, 05:16 PM)Radioroslyn Wrote: Good! Now we know that the oscillator is working and is working at the proper tuning range. This will assure that the stations received will be on there proper places on the dial.Everything came in great, picked up the 910 on the Hammerlund as close to perfect as you can get on the scale of the signal gen for 455. I think this RCA set is very sensitive and the adjustments are very touchy compound this by my not having a long enough antenna at the start of this (about 8-12") right now I have a 6' wire attached which I attache my garage ant about 20. Since the instruction doesn't give a length for the antenna what would be good 10'?
Part 2
With your antenna connected tune in a local station near 600kc then adjust L2 for loudest signal from the spkr. Find a local station near 1300kc and C1 for loudest from the spkr.
Just for grins tune your generator to 455kc. Connect the output to the antenna post of your Hammerlund and listen for it's signal @ 910kc (that would be the generator's 2nd harmonic 455x2=910) to see if your generator is on frequency @455kc. If your not hearing a signal at 910kc then retune the generator till you do then re adjust the IF transformers in your RCA noting that all of the adjusts (4) do make some difference when adjusted. If not there is a problem with the IF transformer.
Just to be clear your set doesn't have a built in loop ant it does require an external ant to hear much of anything. With that being said it should be able to pick stations with 10-15' of wire hooked up to it. I would think that WSB should knock your sock off as I can get it up here near Phila.
Sorry we have to have done this sort of basacwards but I want to be sure there wasn't a problem with the osc. It's doing it's thing! This set going to make you a pro at fixin'
Terry
Thanks for the help!
Eric