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Need Help With a Phone Part. What was this used for? 664B Trans. Unit

Started by John S, August 21, 2016, 06:31:00 PM

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John S

I came across a small phone part today.  I can't find any information on it.  It looks like a little speaker that was installed inside a phone.  I just can't find information on it.  I think I have seen them inside a phone as a little speaker before? Can anyone lead me in the right direction? Here are some pictures of it.

John

poplar1

664B transmitter was installed inside phone for use with Home Interphone.
"C'est pas une restauration, c'est une rénovation."--François Martin.

poplar1

"C'est pas une restauration, c'est une rénovation."--François Martin.

Jim Stettler

The only""in use" panel phone I have every seen was part of a home interphone setup.


Jim S.
You live, You learn,
You die, you forget it all.

John S

I have seen them before inside phones.  I thought they were kind of rare and hard to find. Would be cool to have one all set up for use.

John