Comtek BST 25-216 Synthesized Base Station Transmitter

A synthesized base station transmitter for the 216-217 MHz band, the Comtek BST 25-216 has 57 user-selectable channels and a balanced mic or line input.

For the highest fidelity it pairs with PR-216 receivers on the wide band companded channels. On the narrow band non-companded channels, it uses a special EQ setting and also works with other makers’ all-in-ear receivers in the band. The microcontroller sets the modulation deviation, the companding mode, and the EQ as soon as a channel is selected.

The front panel shows the channel and the exact frequency on bright LED displays, beside a bar graph VU meter. An antenna indicator warns of a deficient antenna, and a lock-out indicator shows when tuning is disabled. A built-in 400 Hz test tone helps test receivers and set audio levels. The telescopic antenna mounts in the top of the transmitter, and a BNC output feeds an optional external antenna.

This stand-alone version comes with a 12 V DC power supply, a TWA-216 telescoping whip antenna, and a C-16 carrying case. RMK-25-216 faceplates install one or two transmitters in a rack. The BST 25-216 serves program monitoring, personal cueing, tour guide systems, language interpretation, and client listening on location.

Features

• 57 user-selectable channels from 216 to 217 MHz
• Balanced XLR mic or line input
• Companded and non-companded audio processing
• Channel and frequency LED displays with VU meter
• Antenna and lock-out indicators
• 400 Hz test tone generator
• 100 mW RF output
• Power supply, telescoping antenna, and C-16 case included