Baja Bid | https://bajabid.com/category/previous-auctions/page/8/
) Keithley 2602A,, Tektronix DSA 8200, (2) JDSU MLCS-A1208P-M100-MFA, (6) Test Equity 1007S Chambers, (5) Newport ESP301-3G, (5) Terra Universal 1610-33A, Agilent 83402C Lightwave Source, Complete Fiber Optic Test System, Fiber Optic / Electronic Components, Micropositioner Probe Stations and more….. Online Auction – June 3 – 5, 2014
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/designators_topic1622_post6620.html
? or P? designator? Also, I took a look at what designators are Agilent and Keithley using in their hi-end products. As you can see, they avoid P? and use J? instead. https://farm8