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CV455 MIL SPEC, 12AT7, ECC81, BRIMAR, LARGE FONT, FOOTSCRAY MARCH 1954 PRODUCTION
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CV455 MIL SPEC, 12AT7, ECC81, BRIMAR, LARGE FONT, FOOTSCRAY MARCH 1954 PRODUCTION CV455 MIL SPEC, 12AT7, ECC81, BRIMAR, LARGE FONT, FOOTSCRAY MARCH 1954 PRODUCTION

CV455 MIL SPEC, 12AT7, ECC81, BRIMAR, LARGE FONT, FOOTSCRAY MARCH 1954 PRODUCTION

  • £35.00

Only 1 left!

CV455 MIL SPEC, 12AT7, ECC81, BRIMAR, LARGE FONT, FOOTSCRAY MARCH 1954 PRODUCTION

On offer today is a lovely Brimar CV455, a premium quality ECC81 carrying the date code for March 1954.       Carrying smudged white print, it tests as excellent using my AVO Valve Characteristic Meter VCM163 with the following results: At Va = 250V Vg = -2.0V 

Section 1: Ia = 14 mA; gm = 5.3 mA/V

Section 2: Ia = 14 mA; gm = 5.5 mA/V

The specification for a new/100% emission valve is:

Ia = 10 mA; gm = 5.5 mA/V

As you can see, this result show a strong valve with excellent matching of each triode section within the envelope.


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