[R-390] R-390/URR RF deck tuning slug colors

[Don Heywood]

Guys, I have a really nice R-391/URR which shows the colors as dots on the 
top of the slugs. I have copied the RF deck cover which has on the underside 
a chart showing the tuning cans and their component designations, also the 
frequencies to be injected and which adjustment is tuned be it the slug (low 
freq) or the trimmer cap (high freq) to aid in alignment. Anyway, I have 
edited this picture showing the color dots on the slugs in this cherry 
receiver. I have checked these colors against another Collins made R-390. 
For the most part they are the same except for the size of the slug in the 
16-32 range of transformers. The R-391 has smaller diameter slugs than the 
second R-390. Also the first row across the front (antenna transformers) 
have two colors in the R-391 and only one color in the R-390. All this 
aside, these colors should be a guide to replacing slugs. Also it shows 
these slugs are in fact different and should remind you to keep the slug 
racks intact when disassembling the RF deck.
This .jpg is too large to attach so if you want me to send you a copy, 
respond off line to   wc4g at knology.net   and I will send you a copy.
      Note: this data is NOT for the "A" model.

73
Don WC4G
Charleston, SC