Hi to all,
hi AndyPilgrim,
Worth a try :
Company Vectracom in Paris, France has been operating since 2001 to transfer archives on vintage VTR/VCR formats to newer media. A lot of the work involved 2" Quadruplex tape.
The company was founded by 3 ex-SFP engineers, the SFP was the production branch of the three state-owned French television channels (ORTF era).
The SFP was a RCA VTR stronghold going back to the TR-22 and TR-70 during the 1960s.
They also had some TR-600s.
When Vectracom was set up, the 3 founders recuperated the Quad machines from the SFP.
On the slideshow of the web site's home page you can see an Ampex AVR-2.
Try sending a message through the Contact page asking if they still have documentation on the TR-600, especially the volume you're missing.
You never know, they aren't the sort of people who throw things out.
http://www.vectracom.fr/en/
in this article about Vectracom, seems they have the machine you're looking for, see photo :
https://mediakwest.com/mk35_vectraco...du-patrimoine/
Good Luck &
Best Regards
jhalphen/Ex-Ampex