Samson CB288 Beltpack Transmitter for Concert 288 Wireless System (Band H, Channel A) User Manual | 104 pages | Also for: Concert 88x Wireless Guitar System (K: 470 to 494 MHz), Concert 288 Presentation Dual-Channel Wireless Microphone System with 2 Headset Mics & 2 Lav Mics (H: 470 to 518 MHz)