General Microwave (GM) attenuator 1674, 0.5GHz to 2.0GHz, tested, w/data

exact item shown - this is a GM attenuator dated 1988, I couldn't find any data on it but it's old enough that it has discrete parts to look at, and I could look them up to see what voltages it needs - which turns out to be rather obvious, 5, 12, -12. I traced out the circuit board from the proper IC pins to the connector to be sure of what voltage goes where, and the postit on the back of the unit has those results. specifically pin 15, red wire = +5VDCpin 4, green wire = common/groundpin 13, blue wire = +12 to +15pin 14, purple wire = -12 to -15 I tested with -12V, you can see the analyzer traces - I adjusted the sensitivity for the last 4 images, as you can see the signal level is stepping up, I was energizing 1 step at a time by grounding the respective pin on the connector. I didn't take photos of the smaller valued bits, they work but it was hard to see in a photo. The markers on my analyzer are set to the spec limits on the device's label, e.g. 1/2 GHz and 2 GHz. Looks like this attenuator is fine up to at least 3 GHz from the analyzer traces Note to me: computer hutch, top shelf behind doorI normally ship within 24 hours of your order, but the post office does not always initiate tracking when I put the packages in the drop off box. Check out my other items!