Ham Radio General Class Practice Test

What is the maximum bandwidth permitted for Amateur Radio stations transmitting on USB frequencies in the 60 meter band?

1. 2.8 kHz

2. 5.6 kHz

3. 1.8 kHz

4. 3 kHz

The correct answer is: 2.8 kHz

The maximum bandwidth permitted for Amateur Radio stations transmitting on Upper Sideband (USB) frequencies in the 60 meter band is 2.8 kHz. This restriction is in place to minimize interference with other communications and to ensure that amateur transmissions remain within the designated frequency allocations. In the 60 meter band, which is a shared band, bandwidth limitations are crucial as they help to accommodate various modes of communication while maintaining a clear and usable spectrum for all operators. The 2.8 kHz limit allows for effective USB operation while ensuring that adjacent channels are not overly affected by out-of-band emissions. Other values presented as potential answers exceed the regulatory bandwidth limit for this band. For instance, a bandwidth of 3 kHz or greater may result in interference with nearby channels and is therefore not allowed under current amateur radio regulations.