Hello, I recently inherited a battery operated RCA same as a 45x11, I was wondering if there is a scematic available as I don't see one and if this batt radio could be converted to AC power .

Definitely can be converted to AC power. You can buy battery eliminators from www.tubesandmore.com and www.radiodaze.com. You can also built a very simple one yourself. You'll need an LM317 voltage regulator and the parts it calls for on the package to make it operate, a small .5 to 1 ampere 6.3-0-6.3 volt transformer, two power diodes capable of handling half an ampere, and some 1000 MFD filter capacitors rated at 50 WVDC. You can obtain all of these from Radio Shack. Wire up a full wave power supply using the center tapped secondary of the power transformer. Filter with one 1000 MFD capacitor. Wire up the voltage regulator. Connect to the DC power supply and filter the output with another 1000 MFD capacitor. Adjust this to the appropriate filament voltage and use this to power the filaments of the radio.

Obtain a 400 volt diode (from Radio Shack), and some 47 MFD 200 WVDC electrolytic capacitors, and a resistor capable of 1 watt at up to 2,700 ohms. You can also use a bridge rectifier instead if you prefer full wave rectification. Wire this to an AC cord and use for the B supply. Start at 2700 ohms and reduce as necessary for proper B voltages.

Use another 6.3-0-6.3 volt transformer like the one mentioned wired above with its secondary wired to the secondary of the transformer above to provide 120 volts isolated from its primary.

This should work with typical battery operated radios that use very low drain 1.5 and 2.0 volt tubes. For radios that use high current drain tubes like the '01A, a more robust A supply will be necessary.

All of the parts mentioned above shouldn't cost as much as the separate A and B supplies sold from the suppliers mentioned in the first paragraph, and this can be wired up in a compact manner so that it will fit within the radio's battery compartment. If desired, the wires connecting to the radio's power switch may be disconnected and wired as though they were connecting through the switch. Then one side of the AC cord of your home made power supply can be switched using the radio's power switch. Simply carry two wires up through where the battery cable passes, or another convenient hole in the chassis.

T.