KT66 Marconi full cup getter Clear glass UK made best KT66 clear glass CV1075 EL37 6L6G valves tubes
KT66 Marconi full cup getter £ 575 quartet
Description
The Marconi KT66 is a tetrode having an anode dissipation of 25 W.
It may be used as an audio amplifiers or an oscillator and radio frequency amplifier
As an audio amplifier up to 50W may be obtained from two valves, tetrode connected. As a push-pull triode it has no equal for use in high quality equipment when an output of 14/15 watts is required.
The KT66 is very robust, both electrically and mechanically, once it is suitable for many industrial applications.
This section attempts to cover all KT66 made from the post WWII till the 1960s
Matched quartet KT66 GEC brown base, clear glass with full cup getter! codes TF TK VC UJ also Z means made at Hammersmith. Late 1950s valves with stunning sound like all KT66s.
When the KT66 was launched it was named the Finest Audio Tube ever made!
KT66 GEC clear glass tested at 6.3 Volts filament
Anode and Screen 250 Volts
Negative grid – 15
Current 65mA
mA/V 6.3
Tested with AVO VCM 163 at: 79mA, 80mA, 80mA, 80mA 100% emission and working order
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