Visual Sound, Inc. Antenna RF Booster Module AB 2

Sennheiser Electronic Corp. Antenna RF booster module (10 dB); specify frequency range A, B, or C (pair). Antenna RF booster module, 10 dB; specify frequency range A, B or C (each sold individually) A range: 518 - 554 MHz B range: 626 - 662 MHz C range: 740 - 776 MHz