Description
Dependable Triode-Heptode Solution
The Mullard ECH35 is a classic triode-heptode vacuum tube designed for frequency conversion and RF signal mixing in vintage AM radio receivers. It was widely used in British and European sets during the 1940s and early 1950s. As a result, it became a trusted solution for superheterodyne designs requiring stable performance and minimal interference.
Smooth Oscillation and Mixing
Inside the ECH35, the triode section operates as a local oscillator, while the heptode mixes this with the incoming RF signal to produce a clean intermediate frequency. Moreover, Mullard’s renowned precision engineering ensures strong gain, low background noise, and smooth signal flow. In addition, its consistent performance helps maintain tuning accuracy and audio clarity. Consequently, this tube plays a key role in restoring full functionality to vintage AM receivers.
Authentic Style and Compatibility
Fitted with the distinctive IO (octal) base and metal shell, the ECH35 offers full electrical and mechanical compatibility with radios designed for this format. Therefore, it’s perfect for restoring Bush, Ekco, and other UK-manufactured sets from the post-war era. Furthermore, its metal shielding helps reduce noise and interference—essential for clear reception in compact radio designs.
Mullard Craftsmanship and Longevity
Known for their superior vacuum tube production, Mullard delivered consistent quality and performance in every unit. The ECH35 showcases rugged construction, stable operation, and low microphonics. Additionally, it handles thermal cycling and long operating hours with ease. As a result, collectors and technicians continue to rely on Mullard for authentic restorations that last.
Perfect for Authentic Restorations
Whether you’re a vintage audio collector or a professional restorer, the Mullard ECH35 offers clean signal conversion, accurate performance, and original-period authenticity. Choose this tube for its legendary build quality and seamless integration into early AM radio circuits.
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