Antique galleries of Steve, Des and family
Home Antique
Galleries
3D
Galleries
2D
Galleries
Animation
Galleries
Business Fuel
Economy
Fun Links What's
new
Contact
us
9- Tube 1930 Radiola AM Radio
Model 80

Restoration Project

Click your browser "Back" button to return

Condition:
The wood is in good condition but has been refinished-
with fresh "dings".
Some trim parts are cracked/missing.
The radio currently does not work.
Some of the electronics have been rebuilt and working, while the rest of the electronics remain a project.

The history:
Of this radio is not known, other than
it was rescued from a junk dealer who had it in a
chicken coop near Nicholson, GA.
This radio uses a new, revolutionary electronic radio design called a "Superhetrodyne".
It is still in use today in our TV's and radios.
Vastly superior to the previous technology
the Tuned Radio Frequency as used in our
Stewart Warner radio.
The technology offers clearer sound, easier tuning, greater sensitivity and better selectivity.

Old Radio
This nice looking radio was acquired in 2003.
TONS of work was required.

Chassis
Radio Chassis
Front

Chassis
Radio Chassis
Rear
Chassis
Power Supply
Front
Chassis
Power Supply
Rear

This is a nine tube radio...and it produces a
nice glow in back!

It is extremely heavy, around 90 pounds.

Operation:
Installation of this radio includes erecting a long ariel antenna and a copper pipe driven into the ground for a "Ground" connection.
It plugs into a regular 120 volt receptacle.
The owner would turn the toggle switch "up" to "on", which is located on the Right side of the radio near the top.
After a minute or so the tubes would warm up and static or a station would be heard. The front Right knob adjusts the tuning..and a cool looking illuminated rotating dial behind the center window. The tuning scale displays the station in the familiar frequency.
Illuminated dial Click the photo on Left to see the illuminated dial. (Looks like we need some other knobs)
The volume control is the front Left knob, and if the signal is too weak the front center knob might be switched to "local". If the station is too loud and distorted it might be in the "Distant" rotary position.

Repair notes:
The radio consists of three separate systems:

  • The cabinet
  • The power supply/main audio Amp unit (Bottom unit)
  • The radio receiver chassis (Top unit)

 

Schematic
Schematic
Fresh from the chicken coop original photos:
Original Front
Original
Front
Original Rear
Original
Rear
Original Chassis
Original
Chassis
Original Amplifier
Original
Amplifier

Logical order of repair is:
1- The cabinet, 2- The power supply and 3- The receiver chassis.

Since the cabinet is first in line, all components were removed and the wood was cleaned with oil soap, fine steel wool and lots of rags.
A coat or two of mahogany staining wax was applied, and weeks later several coats of spray-on clear lacquer paint.
After +77 years it once again looks beautiful.
Oh yea...we also found a 8-Track head cleaner, new in the wrapper stuffed inside.

The power supply/audio amplifier was refurbished next.
We removed all 3 tubes and the massive heavy speaker.

We wanted the power supply to end up being bright shiny metal, but would mean removing the capacitors and transformers from the top for polishing.
I decided against this, as the tabs which anchor them in might be broken, and radically disturbing the wires which connect these components probably wouldn't be a great idea. So we settled on cleaning off all the dirt, gunk and rust and painted it with a couple coats of primer, then several coats of good quality paint.

The speaker cone was missing 1/4 of it's cone as seen in this original picture, and was repaired using a combination of glue, masking tape, paper and paint. Probably not the best speaker repair in the world but I doubt it will do much "Thumping" anyway.

Since the main filter capacitor showed signs of leakage we replaced it with new ones mounted between two new terminal strips.
Connections were mapped out and rechecked. We slowly powered it up and waa-lah, works fine.

Next we tackled the radio chassis.

This time we removed all components from the top: tubes, shields, tuning capacitor assembly etc and cleaned the chassis to a bright shine. Several coats of furniture wax will keep it from corrosion for a very, very long time. The tube shielding couldn't be cleaned as easily so we settled for black hi-temperature paint.

The massive tuning capacitor was disassembled similar to our Stewart-Warner pictured here, cleaned and reassembled.

Today the radio and chassis is completely cleaned up and have been powered up without any unpleasant surprises. The radio does not work, and we are in the process of troubleshooting and repair.