Ham Radio General Class Practice Test

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In what segment of the 20 meter band are most PSK31 operations commonly found?

At the bottom of the slow-scan TV segment, near 14.230 MHz
At the top of the SSB phone segment near 14.325 MHz
In the middle of the CW segment, near 14.100 MHz
Below the RTTY segment, near 14.070 MHz

The correct answer is: Below the RTTY segment, near 14.070 MHz

Most PSK31 operations are commonly found near 14.070 MHz because this frequency is part of the digital segment of the 20 meter band, which is specifically designated for various digital communication modes including PSK31. This positioning aligns well with the characteristics of PSK31, which is a popular digital mode used for keyboard-to-keyboard communication. Furthermore, operating around 14.070 MHz helps avoid interference with other modes, such as SSB phone or CW, which occupy adjacent segments of the band. The choice of this frequency also promotes accessibility for operators using digital modes, creating a dedicated area for such operations within the band. This is important for maintaining effective communication without disrupting other users who may be utilizing different modes on nearby frequencies.