Vintage White's Electronics PT 3004 Coil Tuning Test Mandrel

[Kennywhites]

Vintage White's Electronics PT 3004 Coil Tuning Test Mandrel — Authentic Factory InventoryUp for sale is an incredibly rare, industrial piece of metal detecting history.

https://ebay.io/m/WOTJuQ

[GeoMax]

Hi Kenny,

Do you happen to have original schematics for White's detectors that you can share here on Geotech? For instance, I’d be interested in the schematic for an old White's PI-150 pipe locator. I guess this is an old pulse induction detector based on the Whites PI1000 series from the mid 1980's. Do you happen to have that specific schematic, pictures or any other information about this detector available to share? Thanks.