713A Vacuum Tube

A Military-Grade Sharp-Cutoff Pentode for Precision RF Work

The 713A is a military-specification sharp-cutoff pentode designed for IF amplifier and RF applications in communications and radar equipment. Built to JAN (Joint Army-Navy) standards, it was manufactured to tighter tolerances and tested more rigorously than civilian equivalents — making it one of the most reliable tubes available for any circuit that demands consistent, predictable gain. For restorers working on military communications receivers or high-performance vintage radio equipment, the 713A is the correct and highest-quality choice.

Tested and Ready to Install

Every 713A we sell is individually inspected before it ships — checked for emission, shorts, and noise. You receive a tube that is ready to install and perform. One tube per order. Inquire about specific brands at a 20% premium, or ask about tested used tubes for a 20% discount.

Military Precision for Demanding Circuits

When your restoration demands the best, military-specification tubes deliver. The 713A brings JAN-grade reliability to your IF amplifier or RF stage — the kind of performance that made these tubes the choice of engineers who couldn't afford to have equipment fail in the field.

Specifications:

• Type: Sharp-cutoff pentode (military specification, JAN)
• Application: IF amplifiers, RF stages, military communications receivers
• Condition: Tested and inspected
• Includes: 1 tube per order
• Premium brands available: +20% (inquire)
• Tested used tubes available: −20% (inquire)

Note: The product photo is a representative example. Actual tube appearance — including label style, glass envelope shape, and getter position — varies by manufacturer and production era.