[Boatanchors] Hallicrafters SX-28 S-meter

[Al Parker]

Yes, it did crack on its own.  I think the actual mechanism was "stress
corrosion cracking" due to internal stresses as Drew mentioned.  Deep
drawing causes extreme stresses, it's not uncommon.  Most SX-28 meters I've
ever seen were that way, plus some others.
73,
Al, W8UT
(many yrs in the aluminum production/manufacturing industry)

----- Original Message -----
From: "david knepper" <collinsradio at adelphia.net>>
OK, tell me that the metal split on its own!
>
> Dave, W3ST/W3CRA
> > Drew Papanek wrote:
> >>
> >> Hi All,
> >>
> >> I have a Hallicrafters SX-28 whose S meter housing has split open,
> >> looking like the staves on a barrel. Evidently the brass was not
annealed
> >> sufficiently at manufacture and internal stresses took over......
> >>