"ALL" SP-600 VLF receivers have six (6) bands. As follows: Band 1, 10 to 16 khz Band 2, 16 to 28 khz Band 3, 28 to 50 khz Band 4, 50 to 100 khz Band 5, 100 to 217 khz Band 6 217 to 540 khz. Les Locklear Gulfport, Ms. DX'ing Since '57 http://www.hammarlund.info/