i am selling lots of rubiduim oscillators and gps disciplined one ebay.
if you want to buy

see the item on ebay

HP z3816a :ITEM NO  300210068706
trimble gps disciplined : ITEM NO 300210065008
hp Z3817A. Remote High Stability Oscillator come with HP E1938A Quartz
Oscillator ITEM NO 300210127000

please bidding for what you want buy.

i come from china.the all the thing  i had tested and working good
before i send

i also have fei fe-5882a rubiduim oscillator, SRS PRS10 rubiduim
oscillator ,fei fe-5680a (without J1 ) , if you want buy please
contact me.

I got my hands on a defunct Trimble Navigation unit PN 27760-10.  I don't
know much about the unit other than it used to work very well in the late
90s until someone decided to do a firmware upgrade on it.  The newest
firmware version is not compatible and now it's having some issues.

It can't be reflashed, on top of that I don't have the old flash file.  It
would be extremely interesting to get this working.  There are 4 antennas
labeled M, 1, 2, 3.  Antennas 1, 2, and 3 are not working, only M.

Trimble said there are no parts available and they BERed (beyond economic
repair) it when it was sent back to them.  The packing list from Trimble
lists the description is OBSO Vector TANS RPU ASSY 28V.....

Anyone familiar with it or if I'm really luck have an older version of the
firmware I could burn.

Thanks Shane