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Mark Hennessy, Great Britain (UK) - Tube collection

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ID = 13760
Photo Mark Hennessy

Below you find a part of the tube collection Mark Hennessy.

Transistor sets, especially Hacker, Roberts, Dynatron, Grundig...
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Excerpt from the tube collection of Mark Hennessy. These images (tube photos) were uploaded to the respective tubes or valves by Mark Hennessy.

A 'T2' transistor found in a Hacker Sovereign II RP25B. Used for bias stabilisation - earlier versions used an OC71. This transistor was used in many other Hacker sets, including the RP37A, RP71, RP72, RP73, RP74 and RP75.

Apart from a red spot denoting the collector, there are no other markings on the transistor.
T2_tr
Common type Europe tube/semi... EU
 

Tube collector page of valve collector Mark Hennessy as «own HP at RMorg»
As a member of Radiomuseum.org Mark Hennessy displays items in his/her tube collection. Tubes are called valves in British oriented countries.
Valve and tube collectors as well as radio collectors are invited to join Radiomuseum.org. Every member can display separate collections of tubes, radios etc.

Mark Hennessy started his/her tube collection (valve collection) here on 19.Aug.2013. [index-en]

  
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