15, New Old Stock, Tested 1960’s Redspot Audio Transistors

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15, New Old Stock, Tested Redspot 1960’s Audio Transistors Description You are bidding for 15, New Old Stock, unmarked but tested OC71 redspot type transistors. The gains may vary but all should be useable. The transistors have been tested and have an Hfe of between 40 and 300. These Transistors were AF types rejected because they did not meet the tight specifications at the time of manufacture. As you can see a high Hfe was a reason for rejection as well as a low Hfe. These are ideal for use where you need a germanium PNP audio transistor and are almost certainly interchangeable with the OC71-75 series. Read Practical Electronics, Practical Wireless and Radio constructor of the 1960’s to see what you can do with these. Great for experimenting and restoring equipment unused specimens of red spots are becoming increasingly rare for users and collectors alike. Ideal for repairing early Audio and musical instruments. Nice buy for an electronic musical instrument or early audio repairer Please go to BIDDERS FROM WITHIN THE UK STERLING CURRENCY AREA , below to see the UK postage for this item. Bidders from outside of teh UK domestic postal system, please ask for postage to your country. By bidding you agree to make purchase using my Conditions of sale. Conditions Step 1 . . . . Are You Eligible to bid ? Please read this now ! read more