DK91 TELEFUNKEN

Description

DK91 Telefunken Vacuum Tube – Vintage Pentagrid Converter for Classic Radios

The DK91 Telefunken is a high-quality miniature pentagrid converter tube, ideal for AM radio frequency applications. Manufactured by Telefunken—renowned for precision engineering and durable components—this tube is a popular choice among vintage electronics enthusiasts and radio restorers alike.

Designed to serve as both an oscillator and mixer, the DK91 combines functionality and reliability in a compact 7-pin glass envelope. Because of its low power consumption, it was frequently used in portable and battery-operated radios from the 1950s and 1960s. Additionally, it is a direct equivalent to the 1R5, making it compatible with a wide range of classic radio models.

Furthermore, the DK91 Telefunken delivers stable signal conversion with minimal noise, helping to preserve authentic sound characteristics. Whether you’re restoring a vintage radio or maintaining antique communication equipment, this tube provides dependable, long-lasting performance.

Key Features:

• Miniature pentagrid converter tube for AM radios

• Manufactured by Telefunken – known for reliability and innovation

• Functions as oscillator and mixer in one tube

• Compatible with 1R5 for easy replacement

• Low power use – perfect for battery radios

• Ideal for restoring and maintaining classic radio equipment

With the DK91 Telefunken, you can confidently revive the performance and charm of your vintage radio gear.