Lectrosonics IFBR1B

Available frequency bands for the IFBR1B: VHF (Red knob): 174-216 MHz (uses the IFBT4-VHF) A1 (Blue knob): 470-537 MHz (uses the IFBT4-470, 19, or 20) B1 (Blue knob): 537-614 MHz (uses the IFBT4-21, 22 or 23) C1 (Blue knob): 614-692 MHz (uses the IFBT4-24, 25 or 26) The unit runs for 8+ hours per charge, using the LB-50 lithium ion pack – the same battery as for the SSM micro transmitter.