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American
Bosch "Cruiser", Model 116
1927
This TRF
radio has seven tubes: Four 26es for RF and First Audio, 27 Detector, 71A
2nd Audio, and an 80 in the power supply.
There are
three front panel controls, oneTuner (the RF stages are ganged), a Volume
control, and a "Clarifier", which I haven't quite figured out yet.
I don't
have a proper speaker or high impedance headphones for this, so it hasn't
been tested.
The power
supply which seems to be an optional add-on battery eliminator frankly
scares me and I will probably fabricate a modern one.
AC circuits
consist of a wall-type switch mounted on the side, a plug fuse and accessory
outlets.
The cabinet
is solid and in good condition except for chipped veneer on the cover.
All of
the badges are intact and not corroded.
The tuning
knob is missing and was photoshopped in the image above.
This was
found at a flea market in Otego, NY and cost a whopping $6.49 (1/2 price
sale...)!
This was
found bouncing around inside the Bosch when I opened the lid.
A homebrew
amplifier for headphones or speaker.
The tube
is an O1A.
Homebrew
circa 1925
This came
in the mail one day, from a friend and former boss who decided that he
"had no room in his life" for it.
He bought
it at a yard sale near Woodstock, NY, thinking it was an Atwater-Kent.
In fact,
the builder used the cabinet from a Model 20 to finish this set.
This radio
had a 3 volt C battery in the first audio amplifier stage. I have
replicated it for the restoration with modern alkaline cells.
Here
is the link to the OHIO 3 volt battery graphics.