Basic Qualification · B-001 Regulations and policies · B-001-016-007
In which of the following amateur radio bands is single sideband prohibited?
- A 18.068 MHz to 18.168 MHz
- B 24.890 MHz to 24.990 MHz
- C 7.000 MHz to 7.300 MHz
- D 10.100 MHz to 10.150 MHz
Correct answer: D — 10.100 MHz to 10.150 MHz. From the official ISED question bank, verified word for word.
Why
The 10.100 MHz to 10.150 MHz band, known as the 30-metre band, is strictly limited to narrowband digital modes and Morse code to protect international radio services, so single sideband voice transmission is prohibited here. The full explanation — and one for every question — is in Pro.
Practise this section
The rules: who may operate, what the certificate allows, station identification, third-party traffic, what you may and may not transmit, and how ISED regulates the amateur service.