[R-390] Fw: Best manual for R-390A? (YK2 ... YK3?)

[Henry Mei'l's]

Hello,

I recall reading some comments about the best, most updated and most usable version(s) of the R390-A
manuals on the list . Which one(s)? Available as  internet downloads? -- how many MB?
I'm thinking in terms of alignment and possible future repairs, componenent replacements, AND possible retroing
of the AGC and detector system. I know I'd better replace the cap. leading to the mechanical filters.

I have no real problems with my R-390A at the moment -- did retro the audio stage two years ago. Last owner changed 
the AGC system and added product detection - seems to function quite well, but I know many on this list
aren't too happy about mods  -- I'm not a purist, but do like to keep my gear as original as possible.

(I don't want to get involved in the debate about pure originality vs. mods, etc. -- if you please.)

This is my 2nd R-390A. My first unit was original, in unmodified condition - except for my replacing the tube rectifiers
with diodes and  a series dropping resistor + utilizing the 12 vac tap when my ballast tube gave up the ghost.
Changes were done in a way that allowed rapid retroing -- with regard to  collector value. 


I do have the following partially complete manuals as photo copies,  i.e. TM 11- 856A & TM 11- 5820-358-10 & 35.
(The op. manual, .... 358-10 is complete).

My present R-390A:  Teledyne Systems CORP  
                                                35064-PC-62
                                     (Serial number is in the high 3000's)

Thanks in advance.

Henry  OZ3O (OZ1UF)  N2NR