[R-390] Where is the xtal Y201 located?

[Roy Morgan]

At 03:55 PM 9/24/2007, David Wise wrote:
>Download a copy of the Y2K R-390A manual; it's figure 6-11,
>and you could have searched for it by name.  After my brain,
>this manual is my first service tool.


Ahem,

Jim Green posted recently that he is working on an R-390/URR, The fabled 
"non-A":

"By the way, My R-390 is a R-390/URR (not A). I can find no xtal oven
on the top side right (or left) rear of the RF deck...."

My memory can't answer whether the R-390/URR HAS a Y-201 or not,  nor can I 
remember what the mixing scheme differences are.

My pictures of one indicate that it has only one small oven of the sort 
that's in the R-390A, with one crystal in it, on the calibrator chassis 
under the radio.

Roy



- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
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