06-02-2021, 10:11 AM
Hi Bob,
>I'm no expert, but have had good success at restoring 4 other radios. For anyone reading this who is considering there first, I literally learned everything I know by ready countless posts from others on this site and a few others. so you could do it to. I've been saving this one, working up the nerve to dive into it.
>I'm working on the 201X in another thread
I noticed. That was the propulsion for me to get going on the one I've had for a few yrs. I thought it might be of some help. Didn't realize that there are two different chassis versions and that mine would be the later one in an earlier cabinet. Who would have thunk it?
To answer your question truth be told I do have an original choke. With being said I'm not sure what is going on with the 201 that I'm work on. It has an iron core choke in it's place. Not sure if it's a updated Philco part used on the later revision. Didn't see a part # on it so for now I think I'm going to hang on the spare.
You could give this site a try: http://www.oldradioparts.com/pg20.htm It's under new management. I got IFT's and osc from this set a few yrs ago. There's another way to filter out 10kc and that would be to build a r/c filter. It use several resistors and caps in series and parallel. https://www.electronics-tutorials.ws/fil...ter_2.html The down sides are that there is some insertion lost and it's not directly tunable. I'm not sure why the set needs a 10kc filter. It would seem to me if you just turned back the bandwidth a little it would cut off 10kc and above.
>Wow I thought my unit had some issues you got yourself a project there.
I had the same thought w/your set!
>I'm no expert, but have had good success at restoring 4 other radios. For anyone reading this who is considering there first, I literally learned everything I know by ready countless posts from others on this site and a few others. so you could do it to. I've been saving this one, working up the nerve to dive into it.
>I'm working on the 201X in another thread
I noticed. That was the propulsion for me to get going on the one I've had for a few yrs. I thought it might be of some help. Didn't realize that there are two different chassis versions and that mine would be the later one in an earlier cabinet. Who would have thunk it?
To answer your question truth be told I do have an original choke. With being said I'm not sure what is going on with the 201 that I'm work on. It has an iron core choke in it's place. Not sure if it's a updated Philco part used on the later revision. Didn't see a part # on it so for now I think I'm going to hang on the spare.
You could give this site a try: http://www.oldradioparts.com/pg20.htm It's under new management. I got IFT's and osc from this set a few yrs ago. There's another way to filter out 10kc and that would be to build a r/c filter. It use several resistors and caps in series and parallel. https://www.electronics-tutorials.ws/fil...ter_2.html The down sides are that there is some insertion lost and it's not directly tunable. I'm not sure why the set needs a 10kc filter. It would seem to me if you just turned back the bandwidth a little it would cut off 10kc and above.
>Wow I thought my unit had some issues you got yourself a project there.
I had the same thought w/your set!
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
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