Repeaters: 146.700- Mhz | 146.970- Mhz | 443.700+ Mhz | 445.075- Mhz | PL: 100 hz

Arduino Based CW decoder. *UPDATED*

This Arduino based CW decoder was developed by Hjalmar, OZ1JHM.

Hjalmar published the schematics and source code for everyone to use.

The “sketch” programmed in to the Arduino is based on the Goertzel Algorithm for those who are interested on how it works.

To increase the flexibility a microphone like this can be added to the circuitry.

If you are interested on building this CW decoder, but need assistance or have any questions feel free to send an email to: [webmaster (at) k2jji (dot) org].

UPDATED 9/18/2015:

This post was made 1 year ago exactly to the date but it is the most viewed article on this site. I receive a lot of questions on this project. Most of the questions I get are about how to connect the components. I have deiced to post the schematics of my implementation and also the code I use on my version of this project. In addition I also designed a single sided PCB version of the board for those who want to give it a try. You can etch, CNC machine or send out the files for fabrication.

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Coordinated Universal Time (UTC) Explained

UTC ExplainedCoordinated Universal Time (UTC) is the basis for civil time in many places worldwide. Many timekeeping devices use this 24-hour time standard, which is determined using highly precise atomic clocks. The hours, minutes, and seconds that UTC expresses is kept close to the mean solar time at the Earth’s prime meridian (zero degrees longitude) located near Greenwich, England.

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Thank you, Earl KR2L, for submitting this link.
Do you have any other Ham Radio links to share? Send the details to: webmaster at k2jji dot org

New Amateur Radio Vanity Call Sign Fee Set at $21.40

The FCC has adjusted very slightly downward — to $21.40 — its proposed Amateur Service vanity call sign regulatory fee for Fiscal Year 2014. In a June Notice of Proposed Rule Making (NPRM), the Commission said it was planning to hike the current $16.10 vanity fee to $21.60 for the 10-year license term. The FCC released a Report and Order and Further Notice of Proposed Rulemaking (R&O) in the proceeding on August 29, in which it recalculated the fee to $21.40 for the 10-year license term. The $5.30 increase still represents the largest vanity fee hike in many years. The new $21.40 fee does not go into effect until 30 days after the R&O is published in The Federal Register

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