Hallicrafters S-36A Rebuild

Picked this radio up on eBay, it's a Hallicrafters S-36A Ultra High Frequency Communications Receiver. They were first made in 1941 and some were used by the military during WWII. The receiver covers the 27.8 - 143MHz frequency range which at the time was called UHF but is now know as the lower half of the VHF frequency range. The front end uses 3 acorn tubes, a 954, 955, and 956. It has a total tube complement of 15 tubes and is capable of both AM and FM reception. This set sold for $415 in 1945.

Before Front Views

Here's some pictures of the set as I received it prior to starting any rebuild. The set is aged and has rust spots. Painting will take care of the front panel and the case. Couple problems noted, S-Meter faceplate is broke and the meter seems to be twisted in its mounting. Band change knob is broken so the pointer part of it is busted off but actual band switching is still functional. The ANL switch is broke. The tuning knob is not original and is loose but works. Finally, the top lid has a broken latch.

Before Guts View

Here's some before views of the guts. Very dirty but cleanable. At some time in its long life someone substituted a regular tube (6AF4) for one of the acorn tubes. You can see it on the middle picture of the RF section. Other than that everything looks in tact and in good condition. All the screws for the back panel connections (Speaker/Ant) are missing. Somewhere along the line someone removed all of them from the connection posts.

More Before Views

Underside looks to be in good condition as well, even though most of the components will be replaced. I will probably re-use the original wiring harness as it  is laid out very well. All the transformers check good which was a relief as they would be the hardest items to replace if bad. The underside seems to be coated with wax everywhere, which seems to be typical of these old receivers. Not sure if it's just melted off from the caps etc or if they intentionally coat everything with a waxy substance. Most of the tubes checked fair, only a couple showed low emission. I will probably end up replacing all them anyway.

 


Back Next

Back To Top Electronics Page

Back To The Kings Home Page

Home