Amateur Radio operators have lost a fair amount of spectrum over the years. Please make sure you use what we have, so that commercial and government users can’t claim that we’re wasting them.

• 80 meters (lost during WWII, regained later)
• 2 ½ meters (112–116 MHz) moved to 2 meters in 1945?
• 11 meters Lost to Class D CB Radio, in September 1958

Ham Bands Gained

• 6 meters gained in 1945
• 30 meters gained in 1982
• 24 MHz and 902 MHz gained in 1985
• 17 MHz gained in 1989

1949, the US amateur allocations in Mc

3.5-4 CW 3.85-4 Phone, Class A only	220-225 CW/Phone
7-7.3 CW	420-450 CW/Phone (50 watt power limit)
14-14.35 CW 14.2-14.35 Phone, Class A only	1215-1295 CW/Phone
26.96-27.23 CW/Phone (shared service)	2300-2450 CW/Phone
28-29.7 CW 28.5-29.7 Phone	5250-5650 CW/Phone
50-54 CW/Phone	10000-10500 CW/Phone
144-148 CW/Phone	21000-22200 CW/Phone

The US amateur allocations in 1956⁸

1.8-1.825 1.875-1.925 1.975-2 CW/Phone (Subject to geographic and power limitations)	(Technicians had all privileges above 30 MHz except 144-148)	3300-3500 CW/Phone
3.5-4 CW 3.8-4 Phone Novices 3.7-3.75 CW	50-54 CW/Phone	5650-5925 CW/Phone
7-7.3 CW 7.2-7.3 Phone Novices 7.15-7.2 CW	144-148 CW/Phone Novices 145-147 CW/Phone	10000-10500 CW/Phone
14-14.35 CW 14.2-14.3 Phone	220-225 CW/Phone	21000-22000 CW/Phone
21-21.45 CW 21.25-21.45 Phone Novices 21.1-21.25 CW	420-450 CW/Phone (50 watt power limit)	All above 30000 CW/Phone
26.96-27.23 CW/Phone	1215-1300 CW/Phone
28-29.7 CW 28.5-29.7 Phone	2300-2450 CW/Phone