@@IMSAIGuy I suggest you buy a new 3 1/2 Gal White painters bucket+lid and disassemble it inside, deep down at the bottom. Make sure you get every bearing out before li lifting the Rotor&Stator out. Cover (but don't snap it down). Proceed with Video. Reassemble. Return the Bucket and Lid (it will be clean) to the store.
I found it in the HP catalog 1965 on page 246 with some description of the accuracy and the price of 500$. On this basis also the signal generators with klystron were built as the 8614 and 8616 for the range of 800 to 4500MHz shown with a small circuit overview in the HP catalog 1968 p 363.
I think the "shaft" engages with the notch in the side of that cap on the end of the plunger. This enables the plunger to rise and fall as the cylinder is turned. The screw that engages the "shaft" is fitted after the plunger is engaged and everything is aligned. Just my thoughts not an expert's donation!
You went way past my file 13 point. Actually to the point of OUCH. Thanks for sharing this headache with us. And what an amazing feat of electrical and mechanical engineering disciplines to have designed this back in the days before most of our modern engineering advances we enjoy now days.. Simply amazing !!
Just recently used a similar thing for simple 10GHz measurements in one of the labs at uni. Well, that had a rectanular waveguide instead of N connectors, but the operation, and quite possibly the inner workings are similar. They have a tunable resonant cavity (suprising I know) that is loosely copuled to your main transmission line, so it's "simply a coax" with a tunable (and sharp) trap or notch filter. You need to connect a power meter after the device, and then you can tune the cavity until you see a small dip in the power level, when your cavity is resonant and thus removing small amounts of power from your transmission line. It was advised to us to mistune it after we wrote down the frequency, so it won't effect the other measurements (and thus we don't need to remove it from the system).
Can remember seeing one of those things in the Lab in the early 80’s. Didn’t know how it worked, nor did I see any of the older chaps using it, so for me it was just a sign of a bygone-era, but yeah, from your video it looks like a tuneable double tuned cavity-filter.
Respect! RF measurement with a precision machine in 1962. My best teardown was an infrared spectrophotometer from 1971. I predict part two will be the reassembly and calibration since you've figured out how it works. ;-)
Used to use these in the 7.25-7.75 GHz range to set up the sweep generator sending a test signal into the cryogenically cooled low noise parametric amplifier we used in the receiver of a military satcom antenna back in the 1970s. Used a detector diode on the output and fed that into an oscilloscope that had the X axis driven by the sweep output voltage of the signal generator. The frequency meter was used to generate a notch in the display at the start and end frequencies and we would mark those with a grease pencil on the O'scope display. Then you had to make adjustments to the 1st and 2nd stage of the amplifier to adjust gain and flatness across the band.
@1:20 Hi IMASI guy! That is so cool! I’ve wanted one of these for a while. My problem is, I buy stuff that I don’t have a use for because it’s cool but keep it. Looking forward to the fix!
This looks exactly like business end of the plugin modules for the nixie frequency counter devices that Curious Marc has several videos on repairing recently.
I’d like to find some modules for the HP 5300 Measuring System. I have the 5300B and the 5302A. One day hopefully I’ll get all modules because I’m really loving the design they chose back then.
@@IMSAIGuy yea definitely need something reading above 1Ghz. I’ll keep my eye out for it as well as all other modules. Do not think I’ll need the battery pack. Still wouldn’t mind having one to rebuild, bc by now it would probably need it. 😂 It’s Great little counter so far. I guess when running the 5300B display with A type modules only 7 digits operate instead of 8. But still I love this system.
I wonder if anybody ever used those for a quickie preselector filter? For example with the HP 8555A spectrum analyzer which has no preselector. I’ve always thought of them as for their intended frequency meter usage, but they would have other uses as well since it’s just a tuned cavity. Would be interesting to see a measurement of the insertion loss, filtering shape, and the bandwidth. 😊 I have a small one of these but it has waveguide connections rather than connectors, so I haven’t messed with it (I don’t have the proper coupling from waveguide to N or SMA.)
No, since it's setup as a hi-Q but losely coupled notch filter - i.e. your measurement will 'dip' at the selected frequency. It is intentionally a very small dip, so it won't effect your system much (but still, it is advisable to tune off the dip when doing other things).
I ran the auction at SPD a couple of years in the late 80s. Then finance came in and figured they weren’t getting what the equipment was worth and stopped employee auctions and only sold to outside brokers or other companies.
I was surprised that in the small 24GHz radar module for 50$ there is a real by 8192 divider to 3MHz inside. I tested it in reference to another 24GHz module. It must work like a synchronized oscillator, in first stage(s). ... (I found the number: K-LC7-RFB-00H) On high frequency dividers: "The Signal Path" TSP 227 "A 30GHz Static Frequency Divider from Fraunhofer"
