Somebodey knows what are these?

[pitronix]

I would like to get some infos bout these! Tx

 

[Nigel Goodwin]

They look like SWAF's - Surface Wave Acoustic Filters - used for the IF filtering in TV's.

Not much use for anything else!.

 

[pitronix]

Hm!!!

Well the second one (round on the right) come out of old car phone system!

 

[on1aag]

Hmmmmmmmmmmmmmmm !!

And these fell out of a television . . . after I hit it with a sledge hammer.

on1aag.

 

[pitronix]

You shouldn't hit a TV with sledge hammer, could hurt yourself

 

[pitronix]

But this look like what I have so I gues it is the same thing

 

[Nigel Goodwin]

But this look like what I have so I gues it is the same thing

Looks like it, they are made for other filtering purposes as well, but TV's are obviously the most common use for them.