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

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Just picked up a 1936 Philco 116B Tombstone Radio Today and need some info on it
#44

Quote:This is where a decent digital camera comes in handy. I take pictures of the underside of the chassis as close as I can and still get a sharp focus. This is a great help to remember what is connected where. I de-solder everything connected to any condenser blocks and make a careful drawing showing what goes where. I then remove the condenser block entirely. I place it with the filling side down on a little tray made from aluminum foil, and put it in a low oven, about 250F. I let it sit there for about a half hour. This melts out all the black goo. I remove it, and then pull out the old guts with a pair of needle nose pliers. Once they are out, it is just a matter of replacing them with new ones. The new yellow poly caps are a lot smaller than the old paper ones, so this is no problem. I fill the extra space with crumpled plastic wrap, and top it off with a piece of paper and then black RTV. If the radio has condenser blocks I just rebuild them all this way. No point in doing one, and then hoping the others don't soon fail.


Mike, I was able to get the majority of the bakelite blocks rebuilt with them still wired into the radio, there was only 2 of them that I had to remove a couple of wire leads from to get the bakelite blocks out of the chassis enough to remove the guts but thankfully they were easy enough to remember where the wires went to because the were all on one side of the blocks.

And the radio is definitely performing much better now than it did when I first got it (I even did an IF and RF alignment by ear and the radio perked up even more, surprisingly enough the IF and RF alignment wasn't very far off.) 

Anyways the radio is almost ready to go back together (minus refrinishing the cabinet).

I also figured out that almost all of this radio's broadcast spectrum is still in use to this day the lower quarter of the old Police Band on this radio is actually the rest of the AM band (the AM band on this radio only goes from 540 KC-1500 KC) and the modern AM Band goes clear up to 1720 KHz (which on this radio is the lower quarter of the Police Band on this radio which is 1.5 MC-1.72 MC or 1500 KC to 1720 KC) after that the rest of the old Police Band on this radio falls under the current SW I Band and then the current SW II band is the Night Time SW Band on here, and then the current SW III band is the Day Time SW Band on here, and then the Long Wave Band on here as far as I know does have some use in Modern times, but I wasn't able to pick anything up on it around where I live anyways.

Just some interesting stuff I found out about this radio while monkeying with it today.

Also as for the shadow meter on my radio, it does work but just barely, and I took some measurements of the resistor that is inline with the shadow meter and that resistor is a 1,000 Ohm resistor and it isn't very far off, as it measures around 860 Ohms (it drifted, but down, rather than up) which is still within tolerance, and the shadow meter coil measures around 940 Ohms which is around what its supposed to measure, its not open in other words. So, I'm not sure what's going on with the shadow meter and why it barely moves when tuning in a station.

And then there's a paper cap that is tied into one of the wafers on the band switch on one side and then the other side is grounded to the grounding braid that is attached to one of the screws that holds the tuning capacitor to the chassis, and I can't figure out how to get that capacitor out and swapped out for a new one because its in such an awkward spot to get into that I can't even get to it with my pliers to remove it, any ideas of how to go about removing that capacitor? In case you're wondering its #23 on the parts diagram in the Rider's which is a .05 MFD Tubular Capacitor.


Messages In This Thread
RE: Just picked up a 1936 Philco 116B Tombstone Radio Today and need some info on it - by captainclock1988 - 01-03-2020, 03:07 AM



Users browsing this thread: 14 Guest(s)
[-]
Recent Posts
Philco 46-480 Electronic Restoration
I kept working on reassembly this week. I wasn’t able to solder for a few days while it was too cold (single digit low t...jrblasde — 09:27 PM
Atwater-Kent 84, restoration.
Well, powering it up would be too good to be true, and I had that feeling. Before I did, I decided to check the coils...morzh — 06:02 PM
An attempt to remove the Field Coil from a G speaker
Thanks Chas, sure will give it a look!morzh — 03:39 PM
An attempt to remove the Field Coil from a G speaker
Mike, Lookup  murrayatuptown on ARF. Seems he has a dilemma with surplus field coils. Could get lucky and have what y...Chas — 01:26 PM
Atwater-Kent 84, restoration.
Hello Mike, I have not checked to see if my console has a fuse or not and far as sets go I have early 30s General Motor...radiorich — 11:25 AM
Atwater-Kent 84, restoration.
Ron I forgot, but when you said "phone number", I remembered, caus I usually remember how I act when I need...morzh — 11:12 AM
Atwater-Kent 84, restoration.
You have an extensive collection of Philcos, Mike! I’m always excited to see each new one. Agreed on the power supply fu...jrblasde — 10:50 AM
462ron
Hi Mike, that 84 sure looks great. You don’t often see these antique radios with a fuse like yours has. I usually instal...462ron — 10:22 AM
Atwater-Kent 84, restoration.
Hello Mike, Wow ! far as my AK it does work and the cabinet is in nice shape so is my chassis anyway here is a photo of...radiorich — 02:59 AM
Atwater-Kent 84, restoration.
Nice radio, Mike! Here's hoping it was well rebuilt. Take care and BE HEALTHY! GaryGarySP — 12:12 AM

[-]
Who's Online
There are currently 3655 online users. [Complete List]
» 1 Member(s) | 3654 Guest(s)
Avatar

>