Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

16 B X 2 Shadowmeters
#1

I finished restoring 2 Philco 16B Tombstones this Summer. A code 121 and a code 125 and did a complete restoration on both of them including rebuilding the bakelite blocks, replacing all the other caps and out of tolerance resistors, stuffing the electrolytics and filter cans as well as doing alignment by the book and now both sets play extremely well with the exception of the shadowmeters on both radios.

Version 1 code 121 meter coil reads 949 ohms and AVC voltage seems to be tracking along with tuning. Also have checked magnet and the "vane" in the assembly returns promptly when flipped with a toothpick. Of course on this version there is no shunt resistor so that isn't the issue either.

Version 125 meter coil measures just over 1100 ohms and shunt resistor is 5,050 ohms. I had read that the resistor was subject to a Philco revision that swapped a 2,500 ohm resistor here so I clipped another 5,000 in parallel and there was no difference in the operation of the meter. I didn't take the code 125 meter assembly apart yet as I'm a little reluctant to take this one apart again since it took me so long to get it working as well as it is now and don't want to take a chance of screwing something up. As I said, both of these are exceptional radios with the exception of the shadow meters, especially the code 125 , getting stations from literally everywhere. I just would like have them truly finished before I put them back in their cabinets. Thanks for any ideas,

Frank

[Image: http://www.antiqueradios.com/forums/images/spacer.gif]


Messages In This Thread
16 B X 2 Shadowmeters - by francois8890 - 09-28-2014, 08:10 PM
RE: 16 B X 2 Shadowmeters - by PAradiogeek - 09-29-2014, 10:13 AM
RE: 16 B X 2 Shadowmeters - by francois8890 - 09-29-2014, 01:24 PM
RE: 16 B X 2 Shadowmeters - by Mondial - 09-29-2014, 03:00 PM
RE: 16 B X 2 Shadowmeters - by francois8890 - 09-29-2014, 03:08 PM
RE: 16 B X 2 Shadowmeters - by PAradiogeek - 09-29-2014, 03:08 PM
RE: 16 B X 2 Shadowmeters - by francois8890 - 09-29-2014, 03:14 PM
RE: 16 B X 2 Shadowmeters - by francois8890 - 09-29-2014, 04:31 PM
RE: 16 B X 2 Shadowmeters - by francois8890 - 10-01-2014, 09:03 AM
RE: 16 B X 2 Shadowmeters - by francois8890 - 10-02-2014, 02:59 PM
RE: 16 B X 2 Shadowmeters - by Warren - 10-02-2014, 07:58 PM
RE: 16 B X 2 Shadowmeters - by francois8890 - 10-04-2014, 11:23 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project.  O...glyphmon — 11:07 PM
Preliminary work on wife's Silvertone 2014
Hello roy, that great news glad it worked out for you !! Sincerely Richardradiorich — 10:50 PM
Preliminary work on wife's Silvertone 2014
Safety caps arrived today.  Soldered one in and had a successful first power-up.  No magic smoke escaped and it tunes in...glyphmon — 09:53 PM
HiFi (Chifi) tube amp build - but my own design.
Tim, you refer to “AK”. Is that Alaska or Atwater-Kent, or… JoeJoe Rossi — 11:49 AM
Grundig 5088
Skip, you are back to this one? As for fixing, Mark Oppat fixes vol. controls. Don't know about Grunding, but woul...morzh — 10:30 AM
Stromberg Carlson 1500 Squeal
I volunteer for a monthly Fixit Clinic in my county. All the fixers tell anyone who brings in a Keurig that it will prob...RodB — 10:24 AM
Stromberg Carlson 1500 Squeal
It's funny, a tale of 2 Keurigs. Friend's mom, an immigrant from Central America who had to leave school at the age of ...MrFixr55 — 09:01 AM
Stromberg Carlson 1500 Squeal
My biggest offender is our Keurig coffee maker. I make sure to keep it unplugged as it is still keeping the water warm w...dconant — 08:45 AM
Grundig 5088
All, Looking for a replacement volume control pot. or someone who can fix one.. Skipvecher — 09:17 PM
HiFi (Chifi) tube amp build - but my own design.
I did an experiment with these amps a month or so ago and I think they sound a lot better. I had been using a Douk pream...TV MAN — 03:08 PM

[-]
Who's Online
There are currently 1653 online users. [Complete List]
» 1 Member(s) | 1652 Guest(s)
Avatar

>