The last Antique Electronics Autopsy was a bunch of fun. I got a lot of feedback that people wanted more information included and more pictures per page, so here you are! This time we're going to be doing an autopsy on a Heathkit Grid Dip Meter. Lets begin!
The Heathkit Grid Dip Meter was initially released in 1953 for $20. The designed use of the grid dip meter is to measure high-frequency radio and television equipment. As you'll see from the schematic on the last page, it is basically just a high-frequency oscillator. There were several listed uses for this device, including detecting resonant frequencies and acting as a tone generator.
The entire user manual, including assembly and operation instructions, is available in PDF form here.
Close view of the display shows that it was manufactured by Simpson Electric Co. Chicago. It is Model 127.
Click here to enlarge.
Continue on to the next page as we disassemble the unit.