building radios <3 this is strangely heartwarming

@BigBuggyBastage  
Right, right. What I was going on about with the PCBs is that all the traces are 45 degree (or whatever you want to call it). Did they do that (restrict themselves to 45/90 degree traces) before CAD stuff? I know some stuff was hand-drawn, very organic (my boss refers to “rubylith”).
 
That and the green soldermask.
 
The All-American Five, I’ve never dealt with personally, but I love/hate them from what I know.
 
On the one hand, they were live-chassis, weren’t they? (correction, some early ones were, apparently).
 
On the other hand, circuits designed by people who knew what they were doing, optimized until there’s nothing left to squeeze out? Yessss…

Add some fluorescent fixtures and a few duplex outlets, it looks almost exactly like my bench! :D]
 
Seriously, I ♥ this, so friggin’ much.
 

 
@gallagher117  
I have some Heathkit and HP instruments with PCBs from the late-1950s through early-1960s. Granted, the masks were hand-cut, and the material isn’t exactly high-quality FR4, but it gets the job done. Depending on the year, who made it, and what the instrument does, they can be all-tube, some tubes plus silicon (or selenium [yuck!]) rectifiers for their B+ supply, or something crazy in between.
 
Heh, a rather sick side-joke kinda slipped into my mind: the PCBs could mean both “printed circuit boards” and “polychlorinated biphenyls”, because I’m fairly sure at least one of my instruments has both! lol
 
Consumer-grade PCBs really took off in later All-American Five radios - anything the manufacturers could do to save a penny, they jumped on. I just checked with my Beitman guides, and it looks like PCBs were in at least a few popular models as far back as 1955, perhaps further.

@HDPlayer  

 
If you’re going to complain about anachronisms, get it right.  
ICs? I see none here. Vacuum tubes are at least somewhat consistent with analog oscilloscopes using circular CRTs.
 
Her cutie mark is an NPN BJT, but those were used at the same time as vacuum tubes (e.g. Kenwood hybrid transceivers).
 
I don’t know the history of green solder resist.
 
The only thing that stands out to me is the PCBs, which look a little too modern, but I’m not sure about that.

Love the background work <3

Vacuum Tubes?  
really?  
We got Integrated Circuits…  
Also did some Tagging for once.  
just because Electronics are Awesome.