CV4024, MATCHED PAIR OF MULLARD MITCHAM  MIL SPEC ECC81, SAME DATE CODE, FROM 1978
Move your mouse over image or click to enlarge
CV4024, MATCHED PAIR OF MULLARD MITCHAM  MIL SPEC ECC81, SAME DATE CODE, FROM 1978 CV4024, MATCHED PAIR OF MULLARD MITCHAM  MIL SPEC ECC81, SAME DATE CODE, FROM 1978

CV4024, MATCHED PAIR OF MULLARD MITCHAM MIL SPEC ECC81, SAME DATE CODE, FROM 1978

  • £36.00

Only 1 left!

On offer today is a lovely matched pair of Mullard Mitcham CV4024, a premium quality ECC81 carrying the date code for 1978.       Carrying slightly smudged white print, it tests as excellent using my AVO Valve Characteristic Meter VCM163 with the following results: At Va = 250V Vg = -2.0V 

U20: Section 1: Ia = 11.0 mA; gm = 6.0 mA/V

U20: Section 2: Ia = 11.0 mA; gm = 5.8 mA/V

U22: Section 1: Ia = 13.0 mA; gm = 6.5 mA/V

U22: Section 2: Ia = 12.0 mA; gm = 6.0 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 pair of valves, well matched both inter valve and also showing excellent matching of each triode section within each envelope.


We Also Recommend