R-509 STERLING Tube Tester Cleveland Circa

Review STERLING Vintage Tube Tester Untested Cleveland Ohio Usa Circa

Cleveland R-509/R-509V Vacuum Tube Tester (circa 1928)

The Cleveland R-509/R-509V Vacuum Tube Tester, manufactured around 1928, is an exceptional piece of historical electronic equipment. This instrument was designed and manufactured by the Cleveland Electric Illumining Company, an American electrical equipment manufacturer.

Measuring approximately 10 inches (25.4 cm) wide, 12 inches (30.5 cm) long, and 5 inches (12.7 cm) high, this tester features a sturdy and compact design, ideal for benchtop use in laboratories or workshops. The exterior casing is made of sterling silver, giving it an elegant and timeless appearance. The front panel is adorned with a series of knobs and gauges, each serving a specific function in the testing process.

The R-509/R-509V is a two-in-one tube tester, capable of testing both vacuum tubes and vacuum tubes with filament voltage indicators. It comes equipped with a total of 15 test points, allowing for comprehensive testing of various tube types. The tester features an Automatic Grid Bias control, which simplifies the testing process and ensures accurate results.

The tester also boasts a high voltage generator, capable of delivering up to 1,500 volts. This feature is essential for testing high voltage tubes such as pentodes and beam tetrodes. In addition, it includes a low voltage generator, which can deliver up to 6 volts, suitable for testing low voltage tubes like triodes.

The R-509/R-509V Vacuum Tube Tester is an essential tool for any vintage electronics enthusiast, collector, or historian. It not only serves as a functional device for testing and maintaining vacuum tubes but also represents a piece of history, offering a glimpse into the early days of electronics and vacuum tube technology. Its rarity and superb craftsmanship make it a valuable addition to any collection.

Buying a vintage Sterling R-509/R-509V vacuum tube tester manufactured by the Cleveland Valve Company around 1928 can be an intriguing venture for collectors, hobbyists, or those restoring antique radio equipment. This device was a significant improvement in vacuum tube testing technology during its time, offering automatic testing of various tube types. Here are some pros and cons to consider before making a purchase.

1. Historical significance: The Sterling R-509/R-509V is a rare and valuable piece of electrical history. It represents a crucial period in the development of vacuum tube technology.

2. Educational value: Owning and using this vintage tester can offer an excellent learning experience for those interested in electronics and vacuum tubes.

3. Potential for restoration: Many of these testers can be found in various states of disrepair, providing an opportunity for a rewarding restoration project.

4. Functionality: The R-509/R-509V is still capable of testing vacuum tubes, making it a practical tool for hobbyists or those in the radio repair industry.

5. Collector's item: The rarity and historical significance of this tester make it a valuable collector's item.

1. Complexity: The Sterling R-509/R-509V is a complex piece of machinery with numerous components that may require specialized knowledge to repair and maintain.

2. Availability of replacement parts: Finding replacement parts for a vintage tester like this can be challenging and time-consuming.

3. Size and weight: The R-509/R-509V is a substantial piece of equipment, which may make it difficult to store and transport.

4. Power requirements: The tester requires a 110V AC power source, which may limit its usability for those without access to such power.

5. Risk of damage: Handling and testing vintage tubes with this tester carries the risk of damaging the tubes or the tester itself.

The Sterling R-509/R-509V vacuum tube tester is a rare and valuable piece of electrical history that offers both educational and practical value for hobbyists and collectors. However, its complexity, size, weight, power requirements, and the availability of replacement parts should be carefully considered before making a purchase. Those who are committed to the project and have the necessary skills and resources may find great satisfaction in owning and restoring this vintage tester.

Before purchasing a Sterling R-509/R-509V vacuum tube tester, carefully research its condition, availability of replacement parts, and your personal ability to restore and maintain the device. Consider joining online forums or contacting experts in the field for advice and guidance. Additionally, be prepared for the financial investment required to acquire and restore this vintage tester. If you are passionate about vacuum tubes and electrical history, and have the necessary resources, then this tester could be an exciting addition to your collection.

Details:

The untested nature of the device adds an element mystery and intrigue for collectors enthusiasts vintage technology.

specifications vactubetest:

• brand: Sterling
• mpn: R-509
• part type: Tester Tube
• unit type: Unit
• custom bundle: No
• country/region of manufacture: United States

returns vactubetest:

• paid by: buyer
• time: 30 days
• method: money back
• policy: returns accepted

general vactubetest:

• category: Business & Industrial > Test, Measurement Inspection > Calibrators > Tube Testers

payments vactubetest:

• wallet: apple-pay
• other
• credit card: visa

seller vactubetest:

• # reviews: 5621
• city: daytona beach, florida
• rating: 100.0%

shipping vactubetest:

• class: standard
• type: calculated
• service: usps ground advantage
• transit: 3-9 days
• carrier: usps

offer vactubetest:

• options: ship-to-home
• availability: in stock
• prices: $29.99–$149.95
• item condition: Used
• started: october 8, 2025
• sold #: 12
• in stock #: 5