I picked up one of those Pizeo 2810007-1 oscillators from a guy downtown. I was going to take it apart to see how it compared to the HP 10544A/10811, but they soldered the lid! So much for that idea (I don't have the heart to kill a perfectly good oscillator)...
Anyhow, does anyone know if it can drive a 50 Ohm load like the 10811? I remember reading that the 10544A can't (or isn't) supposed to drive such low resistance, so I figured it would be safer to ask first. Interesting bit of information, the guy deals with military surplus hardware, his warehouse is like a goldmine of neat stuff. Anyhow, he had several old military (AF) 5328A's. The NIB units had genuine HP 10811 oscillators, but all the 'reconditioned' units had the Pizeo's. Could there of been a bad batch of HP oscillators way back when? (I can ask him for the date on the reconditioning tag.) *Maybe* they originally had 10544A's and were upgraded to a 10811 equivalent (i.e. the Piezo units)? Maybe they were reconditioned after HP stopped making the 10811's and thus only 3rd party sources are available? When did HP stop making / selling the 10811's? I do recall seeing some engraving on one of the piezo units that a person tested it in 85. He has a couple more listed on eBay (with the military adapter board), you could probably pick one up cheap (cheaper than a plain 10811), and I know they all work as I tested them out when I was there. I don't think they have seen any use since the counters got 'reconditioned'. His eBay username is: hyde2 On a similar note with all the vintage stuff, he has an old Carol Electronics OS-8E/U oscilloscope (from the 50's?), with manual and everything (on eBay). IIRC he said this was one of the first portable oscilloscopes made for the navy. Jason _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
