The Israelis have used this mode for years for station 4XZ.ĬW Continuous Wave (Continuous Wave) uses the simple On-Off Keying modulation ( OOK On-Off Keying Modulation). In addition the Russians have been using this mode for years for their military (including their 'Bear' net, used by their Air Force), as well as the Single Letter HF High Frequency (3-30 MHz) Beacons (SLHFB), the actual purpose of which is not fully understood. In addition to military and some amateur radio use, there are any number of Numbers stations that send cut numbers using CW Continuous Wave. The most common use of this is for Call-sign Beacons by both Amateur and Military operators. Morse Code is the simplest form of transmission found virtually all over the RF Radio Frequency bands for a variety of uses.
CW Morse Code is the simplest form of transmission found virtually all over the RF bands for a variety of uses.
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