Hallicrafters S-36A Rebuild (Continued)

Front panel is on. Really came out good after repainting. Had all kinds of problems with the S-Meter. Had to put the guts into another meter case I had. Meter still doesn't work quite right, probably as a result of flopping around loose in the original case (which was also a substitute but not of the right size to properly anchor the guts. Next steps are to start alignment and troubleshooting and problems that may arise. I still need to paint the cabinet yet as well.
For those that have been following this rebuild, I ran into some problems with the RF Assembly. It turns out to be a tricky little number. I was getting poooor sensitivity over the bands and found that wiggling the band switch for starters caused huge changes in sensitivity. I tore the whole RF Assembly  apart again and started the rebuild from scratch. For starters I discovered that a number of the wafer contacts had lifted and were intermittent. This as a result of pushing the shaft through all those wafer sections. I also ended up rewinding several of the coils in the RF assy. I did a little component rearrangement to try and minimize stray capacitance etc, and I soldered a lot of the ground connections to the chassis. I also discovered the band switch shaft was slightly bent, this was causing it to not line up and consequently would excessively push the wafer rotors causing the contactors to open up and make intermittent connection. I completely reassembled the RF assembly and the straightened shaft slide right through the wafer sections with no problem. The band switch now operates correctly. Next will be tuning up the RF amp, Mixer, and Osc stages of the assembly.

Finally finished. I purchased an R46 Speaker to go along with it, it has great sound with this speaker. I repainted the case of both the radio and the speaker. I'm still not totally satisfied with the sensitivity and will get back to fiddling with the RF section one of these days. But for now it's a beautiful piece of boatanchor equipment.


 

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