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13EM7 GE branded Raytheon NOS 1960's (1.6/40ma) Image 1
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13EM7 GE branded Raytheon NOS 1960's (1.6/40ma) Nav Image 1

13EM7 GE branded Raytheon NOS 1960's (1.6/40ma)

$8.00 $9.99


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13EM7 Modwright Oppo


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Preamp tubes
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  • Description

1 tube) 13EM7 GE branded Raytheon NOS 1960's

1.6ma Gm=1800

40ma Gm=5900

 

Good mA triode #1 = 1.2-1.4ma

Good Gm triode #1 =1400-1600

 

Good mA triode #1 = 30-40ma

Good Gm triode #1 = 5500-7000

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