Farm Radio Power Supply | Antique Radio Battery Converter

Bring Your Vintage Farm Radio Back to Life – Anywhere

Rediscover the warmth, character, and nostalgia of antique tube radios with this versatile Farm Radio Power Supply and Battery Voltage Converter. Designed for vintage battery-operated vacuum tube radio receivers and transceivers, this compact device provides the multiple voltages required to operate classic radios using a single DC power source.

Original farm radios frequently required several separate batteries to supply filament, plate, and grid voltages. These batteries can be difficult to find, costly to replace, and inconvenient to maintain.

This antique radio battery consolidator solves that problem by converting a single 11–30V DC input into the multiple A, B, and C voltages needed by compatible vintage tube radios.

Whether you're restoring a treasured family heirloom, testing a vintage receiver on your workbench, or operating a classic radio where AC electricity is unavailable, this power supply provides a convenient solution.

Enjoy the golden age of radio without the inconvenience of multiple obsolete batteries.

Versatile Battery Converter & Eliminator for Vintage Tube Radios

Experience the convenience of modern power conversion while preserving the authentic operation of your antique radio.

Unlike a conventional single-voltage power adapter, this farm radio power supply generates multiple output voltages from one DC input, making it ideal for vintage receivers that originally depended on separate A, B, and C batteries.

Two Convenient Ways to Power Your Radio:

• Portable Battery Operation: Connect a suitable 11–30V DC battery to operate compatible vintage radios in locations without AC power. Ideal for mobile use, outdoor demonstrations, antique radio exhibitions, and remote locations.

• AC-Powered Battery Eliminator: Connect a properly sized linear AC/DC converter to power your radio from household electricity, eliminating the need for traditional radio batteries. A compatible 24W linear AC/DC adapter is available separately for an additional $20.

Additional Features and Benefits

• Multiple Voltages from One Source: Consolidates the A, B, and C supplies required by many antique vacuum tube radios.

• Adjustable Filament Voltage: Supports a range of filament power requirements.

• Multiple Plate Voltage Outputs: Supplies commonly required high voltages for vintage tube radio circuits.

• Grid Bias Outputs: Provides negative bias voltages for compatible receivers.

• Convenient Status Indicators: Two lights show power supply operation and radio plate-current activity.

• Built-In Protection: Overload, short-circuit, and reverse-polarity protection.

• Compact, Lightweight Design: Convenient for both workbench restoration and portable operation.

Precision A, B & C Voltage Supplies for Antique Radio Restoration

Engineered for vintage battery-operated tube receivers, this antique radio power supply offers multiple voltage outputs in a compact enclosure.

Technical Specifications

Specification	Rating
DC Input Voltage	11–30V DC
A Supply – Filament	1.25–6.5V, 3A
B Supply – Plate	135V / 80mA
Additional B Output	90V / 60mA
Additional B Output	67.5V / 40mA
Additional B Outputs	45V and 22.5V / 5mA
Combined B Output Limit	Less than 80mA total
C Supply – Grid Bias	-4.5V, -9V, -22.5V / 2mA
Standby Power	Less than 4W
Operating Temperature	0–35°C
Dimensions with Cover	4.7" × 4.7" × 4"
Height Without Cover	3"
Weight	18 oz. (without battery or converter)

Output voltages can be modified for specific applications.

Power Indicators and Connections

Two indicator lights provide convenient operating information:

• Power Indicator: Illuminates when a battery or DC source is connected and the converter's power switch is ON.

• Radio Operation Indicator: Illuminates when the connected radio is ON and drawing plate current from the 135V, 90V, or 67.5V supply.

A slide switch connects B− to either A− or A+, allowing configuration for compatible radio circuits.

Important Compatibility Restriction: This device CANNOT be used with self-biasing radios requiring electrically isolated A and B batteries, including radios without a direct connection between the original A and B battery circuits. Confirm your radio's electrical requirements and wiring before connecting the converter.

Power Source Options

The DC input can be supplied by:

• A compatible 11–30V DC battery (not included)

• A properly sized linear AC/DC converter (not included)

• Your own suitable bench DC power supply

A compatible 24W linear AC/DC adapter is available for an additional $20. Contact us to add this option and operate the unit as a battery eliminator.

What's Included

• Farm Radio Battery Converter / Power Supply

• Protective Cover

• 9-Conductor Connection Cable

• User Manual

• 12-Month Guarantee

Battery and AC/DC converter shown in product photos are not included with the standard purchase.

Preserve the Past. Power Your Vintage Radio Today.

Whether you're a dedicated antique radio collector, an electronics restoration enthusiast, or someone preserving a treasured family radio, this vintage farm radio battery converter offers the flexibility of portable DC operation and the convenience of an optional AC-powered battery eliminator.

Order your Farm Radio Power Supply today and help bring your classic vacuum tube radio back to life. These are made on demand. Please allow up to 15 days for delivery.