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The BST-75 from Comtek is a compact and versatile synthesized base station transmitter. The compact all-metal housing allows you to install multiple units in a single rack space, perfect for diverse professional use. The transmitter provides RF audio with a full frequency response and with a wide transmitting range.

The BST-75 offers 98 programmable channels with a manual 10-channel selectable user switch. It also has a multifunction RF indicator that can detect bad antenna load, RF presence, a coaxial cable short, or open condition for easy troubleshooting. In order to work with a wide variety of receivers, the transmitter can operate in both companded and non-companded modes.

Compact all-metal housing allows you to install multiple units in a single rack space
RF audio with a full frequency response and a wide transmitting range
98 programmable channels with a manual 10-channel selectable user switch
Multifunction RF indicator detects bad antenna loads, RF presence, coaxial cable shorts, or open conditions for easy troubleshooting
Operates in both companded and non-companded modes for wide compatibility with a variety of receivers
Operating Frequency 72.02 to 75.98MHz
Frequency Stability Better than 0.002% (Digitally Synthesized, Crystal Controlled)
RF Output 120mW (Max for FCC Part 90)
Frequency Response 80Hz - 10kHz
Distortion < 0.5%
Compander Companded or Non-Companded Operation
Limiter Peak Type
Connectors 1 x XLR/TRS Combo Input
1 x BNC RF Output
1 x Power Connector
Indicators 1 x LED VU Meter
1 x Antenna Load LED
1 x Power LED
Antenna 19" Telescopic Antenna, Top Mount
BNC Antenna Connector
Power Requirements 12V, AC or DC, 200mA Max
Dimensions (WxHxD) 3.75 x 1.6 x 5.25" (95 x 41 x 133mm)
Weight 15.25 oz (432g)
Comtek BST-75 Synthesized Base Station Transmitter
  • 1-Year Limited Warranty