[R-1051] WTT: IF shield can; WTD: Component Layout picture; WTD: AGC Time Constants

[David Wise]

One of my IF modules is the original General Dynamics part made for the R-1051 plain through C, FSN 5820-078-4725.
These have only two AGC speeds, fast and slow.  Fast is selected when you set MODE to FSK; otherwise,
slow is used.

The other is also made by GD, but it's Assembly number A70244-001, which is NSN 5825-00-439-2375.
(S/N D01434, Rev A.)  Because its A1 board has 13 transistors instead of 9, it has three AGC
speeds (fast, slow, off), which means it's for the R-1051D and later, which added a three-position
AGC switch on the front panel.

The only manual I have that covers the 3-speed IF is the R-1051H manual, but I have a problem: my board
and the manual both show 13 transistors, but the layout is completely different from the picture.

Does anybody have a picture of my board's layout?  Maybe it's in the R-1051D manual or something.  The board
part number is A70655-001, if that helps.

This IF module came to me in the wrong shield can.  (The right can would have the layout silkscreened, and I
wouldn't be asking for a picture!)  The can is another 5820-078-4725.  You can have it
if you trade me a 5820-00-439-2375 can.

My old IF slow time constant is about half a second, and fast is about a quarter-second.
My new IF slow is about a quarter-second and fast is too short to eyeball.
Is this normal?

Thanks,
Dave Wise