[Boatanchors] Collins R 390 and an R 391 sets

[w8au@sssnet.com]

At 11:40 PM 03/16/2004, William L Howard wrote:
>There have been a Collins R 390 and an R 391 sets recently on the bay
>auction. I fail to see a difference in these set from looking at the
>pictures. Can anyone educate me on the difference?

The most obvious difference is that the R-391 is an "autotune"
set, requiring an associated rack mounted DC power supply.
(to run the motors)

w8au