BasicB-001-016-006
Which of the following amateur radio bands has a maximum allowed bandwidth of less than 6 kHz?
A
Answer
Regulations and administration
Type
A
10.100 MHz to 10.150 MHz
B
18.068 MHz to 18.168 MHz
C
24.890 MHz to 24.990 MHz
D
1.800 MHz to 2.000 MHz
Answer Notes
The 30-meter band (10.100 to 10.150 MHz) is unique in amateur radio due to its shared status with other radio services on a secondary basis. Because amateurs must not interfere with primary users, this band has strict regulatory bandwidth restrictions.
In Canada, the maximum allowed bandwidth on the 30-meter band is limited to 1 kHz, which is well below the 6 kHz threshold mentioned in the question. This makes it a haven for radiotelegraphy (CW) and narrow digital modes, but it prevents the use of wide modes like standard voice.
The other options listed (17m, 12m, and 160m bands) all permit maximum bandwidths of 6 kHz or more, which accommodates standard voice emissions like Single Sideband (SSB). Therefore, the 30-meter allocation is the only correct answer.
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The maximum bandwidth of an amateur radio station's transmission allowed in the band 50 MHz to 54 MHz is:
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In which of the following amateur radio bands is single sideband prohibited?