Quote History Quoted:
One of these days I need to build a few more benches because I am out of room in my shack.
I have a Hallicrafters SX-28 that I bought in unknown working condition.
Well it doesn’t light up and have not dug into it yet.
Wish I could find a tech to rebuild it- from reading about them some of the caps are hard to get at.
It is one beautiful looking receiver.
View Quote
You're singing my tune, brother! I built the new shack just a little bit larger than I planned, but I could use twice the room. Can't expand further without infringing upon the space where my machine tools go.
I love the SX-28, but had always heard they were devilish to work on. I saw a Craigslist ad for TWO SX-28As, along with the PM-23 speaker for $100. I set a land speed record getting to the spot, and found a lovely estate where it seemed the gent had simply lost interest in amateur radio. He had a literal pile of fine Collins and later generation Hallicrafters gear in his stable. I would like to have bought the lot, but counted myself fortunate to have the SX-28s.
So I rebuilt both of these units, and it was indeed a challenge. There are four separate RF sections to be removed in turn if you are going to replace all of the electrolytics. It was quite a job, and for a dim bulb like me, it required expending considerable effort in identifying each wire as it was unsoldered, so that I could restore everything to its proper place. With all that, I still made one wiring error, and failed to spot one well buried capacitor which required me to remove two RF sections a second time.
Tedious work, but fun none the less!
Here's the unit out of the chassis, showing the four RF sections:
Hallicrafters-SX-28-Rebuild-004 copy by
Jim QRB, on Flickr
Here is one of the RF sections removed:
IMG_3174 copy by
Jim QRB, on Flickr
Here's an example of how I had to mark things with color codes:
IMG_3192 copy by
Jim QRB, on Flickr