[Boatanchors] [R-390] R390-A Paint Formula

rbethman rbethman at comcast.net
Sat Dec 4 12:58:56 EST 2010


Going back to "posted" information regarding to Paint Specifications, I 
located the following:

> The original procurement specification for the R-390 (non-A) dated 28
> Aug 1950 as amended 28 Aug 1952 calls for the front panel to be
> "semi-gloss, non-wrinkle, gray enamel of a shade conforming to No. 2610
> of Federal Specification TT-C-595".
>
> R-390A Front Panel Drawing SM-D-283246 Revision 2, 3-Mar-60 calls for
> the panel surface to be "Finish P513F per Spec. MIL-F-14072".  It also
> calls for filling the engraving with "White, color chip #27875 per Fed.
> Std. 595".
>
> Military Specification MIL-R-13947B(SigC) dated 26 October 1960, in
> section 3.9 states "The final paint film on Type I surfaces shall be
> final film E, semigloss, light-gray enamel, conforming to MIL-F-14072".

Bob - N0DGN


On 12/4/2010 12:34 PM, Ray wrote:
> I don't have the formula, but have 2 gallons of St. James Gray.  Is this the
> color scheme for the R-390A and associated cabinet?   I don't have the
> CY-917 which I assume is an official collins type cabinet.   What I do have
> are some cabinets that fit the R-390A and have a flip top that is louvered
> as well as louvers on the back.  The back has a section that only goes
> 2/3rds of the way down and an area without metal to allow access to the
> terminal board of the R-390A and will also fit my R-390, R-389 and 75A4 I
> assume.  I have not measured the others as some have realllllly detiorated
> and need lots of reworking.    I plan to paint these all St. James Gray, and
> any Radio that I refill the engraved lettering.  Now if I could only engrave
> those front panels that look like silk screening.  Any comments on paint
> cabinets will be appreciated.  Yes, I know, the cabinets are not the actual
> original ones, but I am not a purist and the radios will not mind if they
> wear a different "coat".  I after all, just moved to Illinois from Hawaii,
> and I am wearing a different coat.
>
> Ray



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