Question
Which of the following VHF/UHF band segments are limited to CW only?
Answer Options
- A) 50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz
- B) 219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
- C) 902.0 MHz to 902.1 MHz
- D) All these choices are correct
Correct Answer: A
Explanation
To ensure a clear operating space for weak-signal operations like Earth-Moon-Earth (EME) and general long-distance Morse code, the FCC designates the absolute lowest segments of the 6-meter and 2-meter bands for CW (Morse code) only. These reserved segments are 50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz.
These sub-bands are crucial for technical experimentation and are strictly protected from wider-bandwidth modes like voice (FM/SSB) or digital transmissions.
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