[rollei_list] Re: Rollei Tropical Models
- From: Don Williams <dwilli10@xxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 06 Jul 2005 01:16:48 -0700
At 12:51 AM 7/6/2005, you wrote:
Hello Richard
in the world of radio (I'm radioam.) we speak of
tropical model when a varnish recover the intern
parts of the device. I had a few years earlier
an old BC??? receiver from the US army you could
put it in water. There were perhaps a few models of Rollei prepared so.
Claude
There were a lot of WWII radios which were
varnish or shellac coated and could be cleaned
with water in shipyard repair shops without
damaging the electronics. I was surprised when
I first saw that done in Long Beach Naval
Shipyard in 1955, when we went in for an
overhaul. I was electronics officer and followed
the overhaul on a daily basis.
The radios I'm speaking of used vacuum tubes, and
of course would not be able to operate under
water. They could probably have been cleaned
just about as well with a vacuum cleaner or air
hose, but water was the norm then.
I have the feeling that such a treatment would
freeze all the moving parts together, and if not,
would surely affect the timing of shutters, etc.
Accédez au courrier électronique de La Poste : www.laposte.net ;
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Don Williams
La Jolla, CA
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