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Weird component needing identification

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kripacharya

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Here are the pics.

#1 is an SOT-23 package device which looked obvious, but none of my usual sources has it listed anywhere...

R8W.jpg

#2 appears to be a crystal, but has a strange housing. And I do not see any need for a crystal in the circuit I am repairing... The marking clearly etched on the crown (silvery part) is of '2V'

crystal-2.jpg crystal-3.jpg

#3 lastly is what looks like an etched PCB inductance. But the pattern is on an independent square of PCB material 7.25x7.25mm, and 1.5mm thick. Could it be an etched transformer ?? The markings close to it are T5 and X102. Here it is

Antenna.jpg Antenna 1.jpg

All of these are in the same circuit, which is apparently an AM/FM Car Antenna.

Any help or pointers would be great !
 
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crystal-2.jpg and crystal-3.jpg is a 10uF 16V electrolytic capacitor.
'antenna' is a transformer, you umight find it has diodes underneath it in which case it could be a balanced mixer. Most likely it is just two windings, one on each side of the substrate.

No idea what R8W is I'm afraid.

Brian.
 

Thanks Brian,

I figured the 10u/16v bit almost immediately after I posted. Silly oversight, but I got confused by the unusual packaging. Good to have confirmation though.

There's no diodes on the 'antenna' thing. It does have traces going out at 4 places, 2 and 2 with resistances commensurate with a trafo winding. And another which disappears underneath but is shorted with a 'center' tap. So it DOES seem to be a transformer. That plus the stenciled X102 .... very interesting. I will unravel the circuit connections and post here again soon.

The lack of info on R8W is strange, unless we are mis-reading the etched markings ?
 
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