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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

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Old 13th Feb 2018, 12:22 pm   #1
NANETTE
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Default R1155. Langite...?

HELLO. Inside the case of my R1155, on the rear cork, is stamped in red “AERO”. This I assume I undersatand. However also is stamped “LANGITE”. Does anyone have a clue what this might mean ( in this context). Many thanks. David
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Old 13th Feb 2018, 12:46 pm   #2
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Post Re: R1155. Langite...?

Langite is a copper mineral formed from the oxidation of copper sulphides.

Obviously, an R1155 has lots of copper wiring in it! So it may indicate that sometime in its history, someone has identified such corrosion. If this radio has spent a large chunk of its life in close proximity to many lead-acid batteries in a charging room, that would explain it. The dreaded 'green spot' now springs to mind. So I suggest a thorough investigation of as much wiring as is accessible. (Err, this is an R1155 ).

Al.
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Old 13th Feb 2018, 12:51 pm   #3
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Default Re: R1155. Langite...?

https://www.gracesguide.co.uk/Cork_Manufacturing_Co

Lawrence.
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Old 13th Feb 2018, 1:04 pm   #4
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Default Re: R1155. Langite...?

That's an interesting article, Lawrence. Make me wonder if this R1155 has had a modification: the fitting of sheets of langite. Perhaps it is simply that that aforesaid cork sheet is, in fact, langite.
To me, that last idea sounds a good deal more likely that my earlier suggestion.

Al.
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Old 13th Feb 2018, 3:48 pm   #5
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Default Re: R1155. Langite...?

Sounds like cork to me - Many thanks everyone. (How dissapointing!).
David
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