Original white electronics big & little foot coil plates

[Kennywhites]

https://ebay.io/m/kKEPNH

Up for auction is a 22-piece collection of official factory testing jigs, simulators, tooling molds, and lab bench instrumentation from White's Electronics in Sweet Home, Oregon.
This archive covers 40 years of engineering—from analog circuits to digital platforms.

IMPORTANT PROVENANCE NOTE: This entire lot was part of an active, operational quality-control setup and everything was in 100% working condition when carefully packed up and placed into storage in 2020. Because the gear has been sitting securely stored since then and has not been individually re-tested on a live bench this week, the lot is being sold strictly AS-IS for historical preservation.

INVENTORY:
1. "BigFoot" & "LittleFoot" Production Molds (1/15/93): 4 aluminum die blocks, 1 depth gauge, 2 vacuum-form trimming templates. Original tooling.
2. Tektronix 2221A Storage Oscilloscope: Bench waveform monitor with Avis Inotek audit sticker.
3. Fluke 8000A Bench Multimeter (DMM): Technical numerical readout engine with 2007 calibration stickers.
4. Heathkit IP-2728 Power Supply: Stamped "Mfg. By White's Electronics, Inc." 1-15V DC bench unit.
5. PT-3050 (TDI-SL Test Fixture): Gold-prospecting platform jig. Full user control simulation, 15µs–25µs Delay pot, speaker, cables.
6. PT-3094 (MX9 Digital Platform Cradle): /Final era test station with display pod, PT1066 board dock, pass/fail LED.
7. PT-3017 (Target/Ground Simulator): Has "NORMAL/SALT" phase toggle, Sensitivity/Target ID pots, speaker, test probes
8. PT-3113 (Dual-Channel Intensity Pod): Handheld module with twin analog meters (0-100) and 1/4" mono jack.
9. PT-1680 (Classic III Test Fixture): Faceplate controls, analog meter, internal speaker, audit label dated 7/25/06.
10. PT-1871 (Beachhunter ID Test Rig): Clear acrylic underwater dock to live-test sealed waterproof boards under 12V.
11. PT-1902 / Asset #1202 (Beach Hunter Simulator): Thumbwheel signal depth calibrator, Mode switch (Salt, Ferrite, $.05, $1.00), Iron toggle.
12. PT-1500 (Analog Calibration Stations): Trio of vintage jigs with ribbon cables, analog meters, tuning pots.
13. PT-3004 (Classic Prizm I Reference Loop): Black concentric search coil with dual metal retail jack and multi-pin board header.
14. Goldmaster Twin D Reference Loop (P/N 624-0373): High-frequency coil with hand-written lab markings ("GMZ", "PCB") and pin plug.
15. PT-1892 (Loop Balancing Jigs): Three multi-channel bench boxes with 1–5 selectors to balance Tx/Rx windings before epoxy sealing.
16. PT-2025 (JFET Semiconductor Tester): Component tester with J113 N-Channel JFET schematic sticker.
17. PT-1445 (EPROM Firmware Programmer): 1980s computing jig with 7/23/87 calibration card, green ZIF socket, safety toggle.
18. PT-2083 (TDI Signal Generator): Standalone pulse induction simulator. Injects gold-target pulses into TDI boards.
19. PT-1356-B (Multi-Voltage Battery Simulator): Rotary selector for 3.8V, 4.2V, 4.4V, 9.0V, 12V steps to test low-battery circuits.
20. PT-1315 (12V Component Docking Block): Heavy aluminum block topped with custom White's "W" contact board.
21. Set of (3) Factory Battery Trays: Modified compartments with test leads and integrated wood-grain alignment tracks.
22. Programming & Data Cables: DB9/DB25 serial cables (marked "A"/"B"), shielded breakout harnesses, ZIF microchip adapter.

LOGISTICS:
Due to the extreme weight of the aluminum industrial molds and the fragile nature of the analog glass meters,
this lot is strictly designated for Free Local Pickup in the Springfield/Eugene, Oregon area.
We will gladly coordinate loading with any private freight carrier arranged and funded entirely by the buyer. Sold AS-IS.
#metal detectors, #testing, #industrial, #jigs, #white's electronics, #coil, #factory plates, #gold tester, #bigfoot, #goldmaster, #tektronix, #oscilloscope, #fluke, #TDI signal generator, #classic 111, #beach hunter simulator, #calibration, #heathkit, #OOAK, #rare, #coil plates

https://ebay.io/m/kKEPNH

[ivconic]

You shouldn't have posted that... I'm going to the attic to hang myself!

[Carl-NC]

I recognize most everything in the pic, even some have labels I made. Unless you are building these detectors, the test fixtures have little value other than whatever parts you can strip off them. Some of them will have partial detector boards in them. The coil/target emulator is interesting, a useful thing to analyze if you ever wanted to make your own. The JFET tester is for matching JFETs used in the TDI. Otherwise, most of the value here is in the oscope and DMM.

[ivconic]

To you, everything seems like an ordinary thing, to me it is legend and history.
I grew up dreaming of many White's models, later having a few myself.
White's left a legend in this area. Along with a few other brands.
It's a shame it's all gone.
If nothing else; a dedicated museum should be created with all things from former companies.
Generations grew up with those names.
...
It's a pity that I'm not a rich man, I would collect all those remains from former big companies and make a unique museum.

[ivconic]

I am still keeping these two, fully operational and in pretty good shape:

[profesor]

To you, everything seems like an ordinary thing, to me it is legend and history.
I grew up dreaming of many White's models, later having a few myself.
White's left a legend in this area. Along with a few other brands.
It's a shame it's all gone.
If nothing else; a dedicated museum should be created with all things from former companies.
Generations grew up with those names.
...
It's a pity that I'm not a rich man, I would collect all those remains from former big companies and make a unique museum.

Hi Ken, welcome to the forum. I can't help but agree with master ivconic. Also, I'm a big fan of the Whites Eagle Spectrum. There are some incomplete schematics of this detector circulating online. Could you share them with Geotech1 forum members?