Hallicrafters SX-25 Super Defiant Receiver | Part 10: I.F. Alignment + Crazy HOT Sensitive Receiver!

Hallicrafters SX-25 Super Defiant Receiver, Made In: United States 1940-1946

Circuit Complement: 6SK7 1st RF Amp, 6SK7 2nd RF Amp, 6K8 1st Detector-Mixer, 6SK7 1st IF ANL, 6SK7 2nd IF Amp, 6SQ7 2nd Detector/AVC/1st Audio Amp, 6SQ7 Phase Inverter, (2) 6F6 Audio Amp, 6H6 ANL, 6J5GT BFO and 80 Rectifier.
Features: • ¼" Head. Jack • S-Meter • Tone (2 Pos.) • Bandspread • RF Gain • Mute Line • Standby • Speaker Terminals • ANL • AVC • Dial Lamp • Hinged Top Cover • BFO • Flywheel Tuning
Ranges: .54-1.7, 1.7-5.1, 5-15.7 and 15.2-42 MHz. The true bandspread covers: 80, 40, 20 and 10 meters.

The "Super Defiant"
The SX-25 is was introduced in 1940. It is an upgrade to the lower cost SX-24 "Defiant" introduced the prior year. With 12 tubes compared to 9 in the SX-24, the SX-25 featured push-pull audio in place of the single-ended audio of the SX-24 and an additional tuned RF stage for all bands except AM broadcast.

At roughly 52 pounds this is a true Boatanchor.

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Thanks! A like and subscribe from me. This is the best video I have seen on the SX-25. I have one and want to restore it. I am not new to radio restorations or Hallicrafters radios but always like to see someone else do it before I do one. I also have some other Hallicraters receivers lying around I need to restore such as a SX-28, SX-100 Mark 1A, S-40, S40A, S-40B, S-20R, S-38C.