[R-390] missing pages in TM-11-856

[Mike Peace]

 TM 11-856 (1).pdf
<https://drive.google.com/file/d/1PiKtPSyNRLS7DYqH6cBbPY1qwH4ToVNa/view?usp=drive_web>
Hi Jacques, Larry and Dan,

I think this version of TM 11-856 may have the schematics that your looking
for.

See attached the google drive link to the very large file-size PDF.

Cheers,

Mike Peace

VK6ADA

On Sat, Apr 11, 2026 at 8:58 AM Jacques Fortin via R-390 <
r-390 at mailman.qth.net> wrote:

> Hi Larry, Dan,
> If I may comment...
> The BAMA document is a scan from the "straight photocopy" of the original
> I've done in 1984 or so: see the bottom of page 2...
> The Royal Signals copy (
> https://www.royalsignals.org.uk/radio-rx-R390/2460.pdf) is a completely
> restored document based on those same photocopies.
> But this document (from Collins Radio) is only a pre-TM11-856.
> The 1955 edition of the TM 11-856 contains more data, but the parts
> listing and other original details are no longer there.
> Be aware also that the "Corrections" C1, C2 and C4 have to be applied to
> provide a global document that make sense.
> I already posted about the errors contained in the TM 11-856 that were not
> present in the 1953 Collins manual.
>
> The most complete TM 11-856 copy is the one that was available from the
> Andy Moorer website (https://www.jamminpower.org/r390.html) which is
> apparently offline now.
> I have most of the related .pdf that came from, but they are all too big
> to be sent by email.
> In the Moorer's copy, all the docs that were in a "separate envelope" are
> reproduced at the end of the document, and there is also a set of those
> re-scaled in 11 x 17 format, but the file is 40MB big !
>
> IMHO, to fully understand a R-390/URR in and out, you need to read and
> compare the three manuals available for it:
> 1_ The 1953 Collins manual
> 2_ The TM 11-856 (the complete 1955 copy) + the C1, C2 C4 corrections.
> 3_ The TM 11-5820-357-35 from 1962 (The corrected copy attached to this
> email: most figures within are a mess, but it is searchable...)
>
> 73, Jacques, VE2JFE in Montreal
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