Crystal?

[slideman82]

Anyone know what crystal is this? It's in a FM mic receiver...

 

[DF96]

My guess is 74.200MHz. Probably third or fifth overtone, which presumably means series resonance.

 

[slideman82]

Great! I suspected it was a 74,2 kHz crystal, but I can't find it in stores...

 

[Elvee]

My guess is 74.200MHz. Probably third or fifth overtone, which presumably means series resonance.

Yes, to be used after tripling in the LO of the receiver: (74.2 x 3) + 10.7 = 233.3

 

[DF96]

74.2kHz would be a much bigger crystal.

 

[slideman82]

74.2kHz would be a much bigger crystal.

Oh oh oh I haven't read that! MHz? Should I ask it like that?

 

[DF96]

Sorry, I don't understand your comment. If you want a 74.2MHz crystal, then that is what you ask for. You would also need to specify case style. Many crystal manufacturers will know what each type of equipment needs, so tell them what it is for.