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HICKOK AC-47A ANTIQUE TUBE TESTER dynamic mutual cond. Original condition 1934

$ 157.75

Availability: 47 in stock
  • Unit Quantity: 1 ea
  • Condition: Museum quality. All original 1934 except power cord appears to have been replaced circa 1950. Item said to be 2nd iteration of the first ever commercially offered Hickok patented and built Dynamic Mutual Conductance (transconductance uMho) tube tester. NOT TESTED, although it may work. All controls move as they should and everything under the chassis appear undisturbed in original condition. Very small chip on upper edge of face plate. Slight patina on face metal parts. Included with tester is the original operations and maintenance manual, factory wiring drawings, plate cap test lead, the required type 80 tube, a factory tube adapter, 6F7 reference tube and aftermarket tube data sheets. The tester with materials is housed in a Hickok carrying case in amazingly good condition with only a few scrapes and scuffs. The metal hinges and clasps need cleaning and the working latch is missing the locking key. Bottom rubber feet are in poor condition.
  • Model: AC-47A
  • MPN: AC-47A
  • Brand: Hickok
  • Country/Region of Manufacture: United States
  • Unit Type: Unit

    Description

    Hickok Model 47A tube tester serial #157791 is more than 90 years old yet is in a condition to hold a prominent place in the display case of a discerning collector depicting classic examples of fine quality craftsmanship of early radio development of the era 1920 - to early 1930. Many pictures are included for review in lieu of "powering the tester up". IF THIS TESTER is intended to be activated and used for demonstration or testing purposes, it is recommended the internal components be tested and any that are out of tolerance be replaced, then a variac be used to carefully bring the unit up to operation over time and very slowly due to its age. This tester boasts a multi pin socket to test 4,5, and 6 pin tubes and has a 7 pin socket and an octal tube socket.
    The tester itself weighs 20 lbs and measures 16"L x 12"W x 6"H. It will be well packed in a 18"L x 18"W x 10"H box with 5 lbs of packing. It will ship via USPS unless buyer selects UPS. Shipping costs based on lower 48 states. Shipping to Alaska, Hawaii, and Canada  may be higher and all overseas shipping costs, customs costs, taxes and other expenses are the responsibility of the buyer. The package will be insured at the price of the sale. Item is listed as parts or repair and not tested only due to age. No returns.
    Questions? Please ask.
    Disclaimer: Statement the model 47 is the first commercially offered Dynamic Mutual Conductance tube tester offered for commercial sale/use is based on lack of any reference in Hickok catalogs prior to 1934.
    Note: The printed material is not of museum quality, especially the original manual that has numerous tape mending and repairs that has not aged well.