Brand: Sonotone
The Sonotone 26T is a type of vacuum tube, specifically a triode tube, that was commonly used in radio and early television receivers. It was manufactured by the Sonotone Corporation, which was primarily known for their audio products such as phonograph cartridges and amplifiers. The 26T tube had a gain of around 40 and was rated for an operating voltage of 150-250 volts. It was popular for use in intermediate frequency (IF) stages of receivers due to its relatively low noise and high gain. The Sonotone 26T tube can still be found in some vintage audio equipment today and is considered a classic collectors' item.