Question
In what portion of the 630-meter band are phone emissions permitted?
Answer Options
- A) None
- B) Only the top 3 kHz
- C) Only the bottom 3 kHz
- D) The entire band
Correct Answer: D
Explanation
The 630-meter band runs from 472 kHz to 479 kHz. Unlike many other amateur bands, the FCC rules for 630 meters (as specified in Part 97.305(c)) do not differentiate between emission modes across different segments of the band, other than the overall 2.8 kHz maximum bandwidth limit.
Therefore, phone (SSB or other narrow-band voice modes, given the bandwidth limit) emissions are generally permitted throughout the entire band from 472 kHz to 479 kHz. The primary restrictions on this band are the 5 Watt EIRP power limit and the mandatory pre-operation notification to the Utilities Technology Council (UTC).
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