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Page 46 of the USMC Radio Operator’s Handbook

To learn how the U.S. Marine Corps teaches (or used to teach) about radio operation theory take a look at the USMC Radio Operators Handbook.

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There’s a lot to learn from this 1966 Army training film about the International Morse Code, but the most crucial component of good keying is rhythm.

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Earl (KR2L) submitted the link: http://www.ac6v.com/history.htm

This page has a detailed list of events that outline the beginnings of the Ham Radio hobby.

To submit links and articles send an email with the information to:
webmaster at k2jii dot org

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“Welcome to the Vintage Radio and Communications Museum of Connecticut,” is the headline on the museum’s website. The site also says, “Our volunteers are happy to give personal tours,” and that’s what today’s two videos are personal tours of the museum conducted by volunteer Bernie Michaels, known in ham radio circles as W2LFV.

(Video Link 1) (Video Link 2)

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Tired of looking at confusing band condition information? Visit: www.bandconditions.com

This experimental website developed by K5BIZ will help you maximize your ham radio experience. It can also be used to determine band conditions for Nets and casual QSO’s. The information provided on www.bandconditions.com is NOT based on software predictions or any kind of satellite based readings. It’s is based on a new Ionospheric sounding method called “HF Ionospheric Interferometry” which operates very similarly to the PolSAR system used by NASA.

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HamRadioCoin or HRC is a virtual currency. It is based on a decentralized peer-to-peer payment network. It is managed by its users without any unique authority or broker. It is intended to be used by anyone but primarily targeted ham radio operators.

HRC can be used to help spread the word of ham radio to people that otherwise would not know about the hobby and to introduce ham radio operators to the world of crypto-currencies. One of the interesting aspects of HRC is that it can be used to receive or send founds via ham radio using the digital mode PSK-63. Watch this video with a demonstration on how the exchange works.

How does it work?

From the user point of view, HamRadioCoin is nothing more than an application or computer program that provides access their personal HamRadioCoin portfolio. This application allows users to send and receive HRC to vendors or other users.

The authenticity of each transaction is protected by digital signatures that match the address of the sender, allowing all users to have full control over each HamRadioCoin sent or received by their personal addresses. In addition, anyone can process transactions using the computational power of their specialized hardware for rewards. This is often called a “mining”.

For more information visit the HamRadioCoin frequently asked questions page.

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This inexpensive Arduino based CW decoder was developed by Hjalmar, OZ1JHM. Hjalmar was nice enough to publish the schematics and source code for everyone to use.

The software programmed in to the Arduino is based on the Goertzel Algorithm.

In addition, to increase the flexibility this type of  microphone can be added to the circuit.

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] with your questions or comments.



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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

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