10-27-2021, 06:14 PM
10-27-2021, 06:14 PM
10-27-2021, 06:38 PM
Hello Bob,
That is great news now the radio should work fairly well !
Sincerely Richard
That is great news now the radio should work fairly well !
Sincerely Richard
10-29-2021, 04:02 PM
10-29-2021, 08:15 PM
Unless I missed it - does the field coil work now?
10-29-2021, 11:54 PM
I have two speakers. A single ended one for a Philco 90 with an open field coil and missing output transformer.
The one shown above is for a Philco 20 with push-pull 71A driving it. I disconnected the center tap and tied one end of the output transformer to one side of the field coil to make it compatible with my 90.
The one shown above is for a Philco 20 with push-pull 71A driving it. I disconnected the center tap and tied one end of the output transformer to one side of the field coil to make it compatible with my 90.
10-30-2021, 12:31 AM
Hello Bob,
good thinking far as the speaker goes !
sincerely Richard
good thinking far as the speaker goes !
sincerely Richard
11-02-2021, 07:09 PM
I found a cheaper source of magnet wire, can't vouch for the seller of course: https://www.ebay.com/itm/363090262105
Regards
Arran
Regards
Arran
11-03-2021, 12:11 AM
Thanks for the tip. I just placed an order.
I'll try the techniques described in this thread to get the pole piece out and back in.
https://philcoradio.com/phorum/showthread.php?tid=15792
I'll try the techniques described in this thread to get the pole piece out and back in.
https://philcoradio.com/phorum/showthread.php?tid=15792
11-03-2021, 09:35 PM
Hey, finally found a currently made audio taper 500K pot with a 2" round shaft. 2W rating.
Not exactly cheap at $17.76, but at least there's an option from a decent brand. Shaft can be cut or filed down as needed.
https://www.mouser.com/ProductDetail/CTS...364R504A21
Also available from Digi-Key for a bit more.
https://www.digikey.com/en/products/deta...1/11617375
Not exactly cheap at $17.76, but at least there's an option from a decent brand. Shaft can be cut or filed down as needed.
https://www.mouser.com/ProductDetail/CTS...364R504A21
Also available from Digi-Key for a bit more.
https://www.digikey.com/en/products/deta...1/11617375
11-04-2021, 12:02 AM
Hello bob,
man I wish you were not in a hurry because when i visit my family in dec. i could check my NOS stock of controls .
sincerely Richard
man I wish you were not in a hurry because when i visit my family in dec. i could check my NOS stock of controls .
sincerely Richard
11-04-2021, 12:26 PM
Oh, I'm not in any particular hurry. I might very well have one in my stash too. I've seen many radios with a replacement volume control of the wrong value or taper type. It's nice to have options.
11-06-2021, 12:32 AM
11-06-2021, 12:53 PM
Hello Bob,
that is great news I do have some but I don't think that gauge thou.
I have a new project to rebuild a huge RCA like 10 tube count chassis with the magic brain .
Sincerely Rich
that is great news I do have some but I don't think that gauge thou.
I have a new project to rebuild a huge RCA like 10 tube count chassis with the magic brain .
Sincerely Rich
11-06-2021, 06:22 PM
I wish I had a magic brain. Mine is always thinking the wrong thing.
11-10-2021, 01:21 AM
The new volume control has arrived and works very well. Perfect fit too.
It's just temporarily wired in here as I still need to cut the shaft down.
I also installed the new arch support. Before gluing I painted with this very flat camo paint. It's a great match for the old dark interior wood.
The arch is far stronger now and that's a big load off my mind.
Sorry about the blurry photo. Bad lighting in the basement.
It's just temporarily wired in here as I still need to cut the shaft down.
I also installed the new arch support. Before gluing I painted with this very flat camo paint. It's a great match for the old dark interior wood.
The arch is far stronger now and that's a big load off my mind.
Sorry about the blurry photo. Bad lighting in the basement.