Crystal Frequency ?

• Crystal Frequency ?
  Posted by alin_im on 23 May, 2015 15:32
• Hey guys,
  
  How can I find the frequency of a crystal if it does not have any marking on it
• #1 Reply
  Posted by PA0PBZ on 23 May, 2015 15:41
• Build an oscillator and measure it  But really, no markings at all seems a bit odd. Did you take it from a pcb? Any pictures?
  
  
• #2 Reply
  Posted by continuo on 23 May, 2015 16:30
• W2AEW made a very nice vid on building such an oscillator, check it out 
  
  
• #3 Reply
  Posted by alin_im on 23 May, 2015 16:53
• Quote from: continuo on 23 May, 2015 16:30

  W2AEW made a very nice vid on building such an oscillator, check it out 
  
  
  

  
  wow nice ! thank you very much that is exactly what i wanted.
• #4 Reply
  Posted by PA0PBZ on 23 May, 2015 18:20
• I planned to post that after you came back with maybe more info, but I see somebody already did! Good luck, you will learn something new.
• #5 Reply
  Posted by w2aew on 23 May, 2015 20:01
• It's always great to see when one of my videos helps someone.
• #6 Reply
  Posted by PA0PBZ on 23 May, 2015 20:16
• Quote from: w2aew on 23 May, 2015 20:01

  It's always great to see when one of my videos helps someone.
  

  
  Your videos get quoted a lot here Alan, because you are very good at explaining the basics and you cover a lot of different subjects.
  Well done 
• #7 Reply
  Posted by Isad on 23 May, 2015 21:44
• I watched that video 5 times before bulding one for my self dont know
  why i watched them but they just seemed helpfull.Btw just
  asking i have build that circuit and i am measuring the out with a
  rigol ds1074z oscilloscope and i wanted to know whats the
  precision on the frequency counter on the rigol?
  Sorry if this might be of topic.