[R-390] R-390A Manufacturer ID help

[Robb Urie]

Hello,

I have an R-390A that is missing the data plate from the front panel...besides removing the modules, any clue on how I can identify the manufacturer?  There is nothing on the rear panel that indicates the source, the PTO is a Collins version, but that may have been changed in the past.  It works great, but looks rough and looks as it was dropped on it’s right-rear panel at one time.  Plan to attempt to refinish the front panel someday and if I can ID the maker, will get a tag from Fair Radio.  It is currently rack mounted with a nice R-388 and a National HRO-5TA-1.

Any help would be greatly appreciated.

73,

Robb NØRU

rurie at bajabb.com