[R-390] R390/URR manuals

[Michael, W1RC]

At 07:40 AM 3/8/2011, 2002tii  wrote:
>1962:
>Army TM 11-5820-357-35
>I believe there were 4 field change orders.

There was also a manual that Collins Radio produced an Instruction 
Book for Radio Receiver R-390/URR23 October 1953 14214-P-51 about 220 
pages.  This was renamed TM11-856.  It contains the three manuals 
that were published subsequently.

As timing would have it right now I am working on an R-390 and need 
to know if anyone has the Field Change Orders.  Specifically I need 
some information contained in both C1 and C3.  There is a "Zero 
Adjustment" caution that I would like to see.  I am just about to 
remove the front panel and there is a handwritten notation in my 
TM11-5820-357-35 that I should see these items.

If anyone has C1 and/or C3 would you be so kind as to post these 
cautions.  I haven't played much with these radios for about 13 years 
and I don't want to damage anything by virtue of forgetfulness.

73,

Michael, W1RC