Question
How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?
Answer Options
- A) Spread spectrum only
- B) Fast-scan television only
- C) Emergency traffic only
- D) Fixed digital message forwarding systems only
Correct Answer: D
Explanation
The narrow 219 to 220 MHz segment of the 1.25-meter band is subject to special limitations because the primary user of this band segment is a licensed industrial service. To prevent interference with these primary users, the FCC restricts amateur operations here to fixed digital message forwarding systems only.
This includes long-distance data links and digital store-and-forward bulletin board systems (BBS). Regular voice (phone) transmissions are generally not allowed here, and operators must be registered with the frequency coordinator.
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