The Photos are actual Photos of tubes you are buying
made in 1940’s
made in England
Black coated glass
New in white box
Tested on Amplitrex AT1000 Advance Digital Tube Tester
Sr. No.1336006 T1=Ia=11.0ma Gm=2800
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The VR102 (= M-OV Type BL63) is a low-impedance double triode with one grid taken to the top cap.
The VR102 was supplied by M-OV to the RAF during WWII. Thanks to Frank Whitby for confirming that the VR102 was used for the R1155 receiver that was fitted to Lancaster and other bombers. As part of the direction finding (DF) circuitry, it formed the visual meter switch operating at either 30 or 80 Hz. Its output fed the twin-needled Visual Indicator and one of these instruments was usually fitted on the top of the cockpit instrument panel.
A description of this clever circuit, designed by the Marconi Wireless & Telegraph Co. is given in the Manual for the R1155 (AP2548A Vol I Chapter 2). This can be seen on the Vintage and Military Amateur Radio Society’s website.
The classic envelope is 42 mm in diameter and, excluding the IO base pins, is 113 mm tall.
References: 1040. Type VR102 was first introduced in 1939.
We accept order with combine shipping
All tubes tested on our Amplitex AT1000 A Advance Tubes Tester to preform the test as mentioned and to ensure that the tubes are in factory specs (working) before listing them.All tubes are checked for Shorts, Emission, Life test, and Leakage. Emissions/life test on this meterTube tested: No leaks, No shorts, Good emissionsTube tested emissions (100) life test (100)Tube tested strongOur experienced shipper will package your item(s) with care. Through Expedited delivery within 5 days byDHL,FEDEX,ARAMEX,with tracking Number.We also combine multiple purchases. Our shipping carriers include , FedEx We reserve the right to ship using the carrier and shipping method that is most effective for your purchase.
We specialized in thoroughly testedand screened quality vacuum tubes.We have various type of valves and tubes testers Like- Amplitrex AT1000 Advance Digital Tube Tester,- Hickok 752a tube tester,- AVO Type 160We have been in the valve and tube Business Since 1970’s.Previously we were better Known as a Wholesaler,but recently, We are offering more retail items.All item are tested and guranteed and suppliedWe have Aproximately 3,00,000 Valve and Tubes Stock PLEASE CONTACT US IF YOU REQUIRE FURTHER INFORMATION ABOUT THIS TUBES & VALVES.