element14 Community
element14 Community
    Register Log In
  • Site
  • Search
  • Log In Register
  • Community Hub
    Community Hub
    • What's New on element14
    • Feedback and Support
    • Benefits of Membership
    • Personal Blogs
    • Members Area
    • Achievement Levels
  • Learn
    Learn
    • Ask an Expert
    • eBooks
    • element14 presents
    • Learning Center
    • Tech Spotlight
    • STEM Academy
    • Webinars, Training and Events
    • Learning Groups
  • Technologies
    Technologies
    • 3D Printing
    • FPGA
    • Industrial Automation
    • Internet of Things
    • Power & Energy
    • Sensors
    • Technology Groups
  • Challenges & Projects
    Challenges & Projects
    • Design Challenges
    • element14 presents Projects
    • Project14
    • Arduino Projects
    • Raspberry Pi Projects
    • Project Groups
  • Products
    Products
    • Arduino
    • Avnet & Tria Boards Community
    • Dev Tools
    • Manufacturers
    • Multicomp Pro
    • Product Groups
    • Raspberry Pi
    • RoadTests & Reviews
  • About Us
  • Store
    Store
    • Visit Your Store
    • Choose another store...
      • Europe
      •  Austria (German)
      •  Belgium (Dutch, French)
      •  Bulgaria (Bulgarian)
      •  Czech Republic (Czech)
      •  Denmark (Danish)
      •  Estonia (Estonian)
      •  Finland (Finnish)
      •  France (French)
      •  Germany (German)
      •  Hungary (Hungarian)
      •  Ireland
      •  Israel
      •  Italy (Italian)
      •  Latvia (Latvian)
      •  
      •  Lithuania (Lithuanian)
      •  Netherlands (Dutch)
      •  Norway (Norwegian)
      •  Poland (Polish)
      •  Portugal (Portuguese)
      •  Romania (Romanian)
      •  Russia (Russian)
      •  Slovakia (Slovak)
      •  Slovenia (Slovenian)
      •  Spain (Spanish)
      •  Sweden (Swedish)
      •  Switzerland(German, French)
      •  Turkey (Turkish)
      •  United Kingdom
      • Asia Pacific
      •  Australia
      •  China
      •  Hong Kong
      •  India
      • Japan
      •  Korea (Korean)
      •  Malaysia
      •  New Zealand
      •  Philippines
      •  Singapore
      •  Taiwan
      •  Thailand (Thai)
      • Vietnam
      • Americas
      •  Brazil (Portuguese)
      •  Canada
      •  Mexico (Spanish)
      •  United States
      Can't find the country/region you're looking for? Visit our export site or find a local distributor.
  • Translate
  • Profile
  • Settings
Community Hub
Community Hub
Member's Forum SMD 121.5Mhz Oscillators
  • Blog
  • Forum
  • Documents
  • Quiz
  • Events
  • Leaderboard
  • Polls
  • Files
  • Members
  • Mentions
  • Sub-Groups
  • Tags
  • More
  • Cancel
  • New
Join Community Hub to participate - click to join for free!
Actions
  • Share
  • More
  • Cancel
Forum Thread Details
  • State Suggested Answer
  • Replies 7 replies
  • Answers 2 answers
  • Subscribers 577 subscribers
  • Views 710 views
  • Users 0 members are here
  • oscillators
  • frequency oscillator
Related

SMD 121.5Mhz Oscillators

alikhanyz
alikhanyz over 7 years ago

Hello All, I am trying to source 121.5 Mhz SMD oscillators but not having any luck so far. Looked on all the major supplier sites but they are either 120Mhz or then 122Mhz. Can someone please help?

 

Thanks!

Ali

  • Sign in to reply
  • Cancel

Top Replies

  • cozytom
    cozytom over 7 years ago +4
    What are you using 121.5MHz for? That is "Guard Band" for aviation. Emergency Locator Transmitters will use that frequency in the case of a crash (along with 406MHz).
  • shabaz
    shabaz over 7 years ago in reply to cozytom +3
    I once purchased about 50 surplus crystals, for an experiment, turned out they were nearly all 121.5MHz : ( I disposed of them instead of sticking them on ebay, to prevent them being resold.
  • alikhanyz
    alikhanyz over 7 years ago in reply to cozytom +1 suggested
    Hello Tom, This is being used in a RF drive within a laser marking machine at a fabric manufacturer. See photo attached. kind regards, Ali
Parents
  • cozytom
    0 cozytom over 7 years ago

    What are you using 121.5MHz for?

     

    That is "Guard Band" for aviation. Emergency Locator Transmitters will use

    that frequency in the case of a crash (along with 406MHz).

    • Cancel
    • Vote Up +4 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • alikhanyz
    0 alikhanyz over 7 years ago in reply to cozytom

    Hello Tom,

     

    This is being used in a RF drive within a laser marking machine at a fabric manufacturer. See photo attached.

     

    kind regards,

    Ali

    image

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Verify Answer
    • Reject Answer
    • Cancel
Reply
  • alikhanyz
    0 alikhanyz over 7 years ago in reply to cozytom

    Hello Tom,

     

    This is being used in a RF drive within a laser marking machine at a fabric manufacturer. See photo attached.

     

    kind regards,

    Ali

    image

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Verify Answer
    • Reject Answer
    • Cancel
Children
  • shabaz
    0 shabaz over 7 years ago in reply to alikhanyz

    Hi Ali,

     

    Are you sure about that? It looks like a date code.

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • luislabmo
    0 luislabmo over 7 years ago in reply to alikhanyz

    Hi Ali,

     

    I think shabaz got a point. That may be like a date code. I googled SMD oscillators images and seems most of them print the rated frequency with a high precision (many zeroes, indicating KHz, MHz, and so on), so I wouldn't count on this one being 121.5 Mhz as there is no decimal point or MHz in the marks anywhere. I'd say the number at the top may give you a better indication but can't read it properly.

     

    Luis

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
element14 Community

element14 is the first online community specifically for engineers. Connect with your peers and get expert answers to your questions.

  • Members
  • Learn
  • Technologies
  • Challenges & Projects
  • Products
  • Store
  • About Us
  • Feedback & Support
  • FAQs
  • Terms of Use
  • Privacy Policy
  • Legal and Copyright Notices
  • Sitemap
  • Cookies

An Avnet Company © 2026 Premier Farnell Limited. All Rights Reserved.

Premier Farnell Ltd, registered in England and Wales (no 00876412), registered office: Farnell House, Forge Lane, Leeds LS12 2NE.

ICP 备案号 10220084.

Follow element14

  • X
  • Facebook
  • linkedin
  • YouTube