Comparison : Item # 240L, 40W, 10 kHz - 12 MHz RF Amplifier
Item # 2200L, RF Amplifier: 200W, 10 kHz - 12 MHz
Item # 2400L, 400W, 10 kHz - 10 MHz RF Amplifier
Item # 2500L, 500W, 50 kHz - 12 MHz RF Amplifier
Item # 2100L, RF Amplifier: 100W, 10 kHz - 12 MHz