[R-390] looking around for r390-a

[John Kolb]

On Sat, 29 Jun 2002, Paul H. Anderson wrote:

> But the main point is, after 40 years, they're mostly facing the same
> problems - leaky audio filter caps, under AF deck electrolytic cap, maybe
> not so not mechanical filters (recall recent thread about the goo in
> them).

The mechanical filters with "goo" problems are only a
particular series of Japanese Kokusai brand filters -
I haven't seen anyone report problems with decomposing
foam in Collins filters although there may be problems
with some of the early Collins filters in rectangular
cases that used standard rubber O-rings for support.
None of this applies to the F455N series of filters
used in the R-390A's.

John