6SK7 – Variable-Mu RF Pentode NOS (New Old Stock)

6SK7 – Variable-Mu RF Pentode NOS (New Old Stock)

The 6SK7 is a variable-mu RF pentode designed for use in radio frequency and intermediate frequency amplifier stages, particularly in AM radio receivers and military communications equipment. It was introduced in the late 1930s and became a standard tube during WWII due to its reliability and controlled gain characteristics. The 6SK7 features a metal envelope and was often used in circuits requiring automatic gain control (AGC). ([r-type.org](https://www.r-type.org/exhib/aaa0126.htm))

• Tube Type: Variable-Mu RF Pentode
• Base: Octal (K8A)
• Heater Voltage: 6.3V
• Heater Current: 0.3A
• Typical Anode (Plate) Voltage: 250V
• Use Cases: RF and IF amplifier stages in AM radios, military and communication receivers
• Equivalents: 6SK7GT (glass version), VT-86, CV280

The product image is not necessarily taken of the product being sold. Always check the datasheet for specs. The values listed are taken from various sources and may not always be accurate.