Which HF bands have segments exclusively allocated to Amateur Extra licensees?
All HF bands
80 meters, 40 meters, 20 meters, and 15 meters✓پاسخ درست
All HF bands except 160 meters and 10 meters
60 meters, 30 meters, 17 meters, and 12 meters
توضیح
Comparing the Amateur Extra table with the Advanced and General tables, only four HF bands start lower for Extra: 3.500, 7.000, 14.000 and 21.000 MHz. Those bottom 25 kHz segments are the only HF spectrum no other class may use.