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

Thread Closed
Thread Rating:
  • 1 Vote(s) - 5 Average
  • 1
  • 2
  • 3
  • 4
  • 5

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
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM
Part numbers to model cross
Jim, We have this index put together by Dale Cook but I don't think that is quite what you are looking for. The Parts...klondike98 — 09:37 PM

[-]
Who's Online
There are currently 1420 online users. [Complete List]
» 1 Member(s) | 1419 Guest(s)
Avatar

>