CW
CW (Continuous Wave), often referred to as Morse code, is one of the oldest forms of communication in amateur radio. It involves transmitting a series of on-off tones to spell out messages using an internationally recognized alphabet.
CW is highly efficient in terms of bandwidth and signal-to-noise ratio, making it ideal for making contacts under challenging conditions, such as low power or weak signal environments.
General Ham Resources
CW Examples
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QRP Operation: CW is commonly used in QRP (low-power) operation because it is highly efficient, allowing contacts to be made even with very low power levels. This efficiency makes it ideal for portable and battery-powered setups. Learn more about CW QRP Operation.
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DXing with CW: Many DX enthusiasts prefer using CW for contacting rare or distant stations because it can often be heard and understood in conditions where voice signals fail. This makes CW an effective mode for DXing. Find details on CW for DXing.
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Contesting: CW contests are popular events where operators try to make as many contacts as possible within a set time, using Morse code. These contests help improve operating skills and offer a challenging, rewarding experience. Read more about CW Contesting.
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Emergency Communication: CW is still used in emergency communication because it can be understood in noisy environments where voice communication might be impossible. It is an important skill for operators involved in emergency preparedness. Discover more about CW in Emergency Communication.
Local Club Activities
May RARS members enjoy using CW. We have experts that can help.
Our recommendation is to use online classes to learn and practice. Here are a couple:
CW Academy
Long Island CW Club