My basic 1U4 solid state replacement is designed as a standard replacement for the 1U4 tubes in your radio. For a step up in performance I also make the 1U4IF. It's a high performance IF amplifier tube replacement featuring a 455 kHz ceramic filter to improve the selectivity of your radio. (The IF amplifier tube in the Zenith transoceanic is located near the center rear of the chassis. The 1U4 located near the left rear should be replaced with a standard 1U4.) The 1U4IF is currently $35 To order fill in the contact form below or contact me at email@example.com
Note: Your radio IF adjustments should be properly aligned to 455 kHz to prevent audio distortion. Also, the 1U4IF will not function as an RF amplifier tube replacement.