R12 844.17
(R14 770.80 incl VAT)
Short description:

Mini Base Station Transmitter with Pro Audio EQ


The Comtek BST 75-216 P Mini Base Station Transmitter with Pro Audio EQ is simple to use and features Flash Memory synthesized channel programmability with a manual, 10-channel selectable switch. A multi-function RF indicator detects bad antenna load, RF presence, and coaxial cable open condition for quick and easy troubleshooting. To accommodate a variety of receivers, the BST 75-216 Transmitter can operate with both non-companded receivers and companded receivers for higher fidelity sound reproduction. A practical, compact, all-metal enclosure is suitable for permanent rack-mount installations or for standalone portable use.

The BST 75-216 P is configured with all 10 channels using the wide band compounded channels for use with the PR-216 receiver only. It also offers extended low end frequency response.

  • Full fidelity frequency response
  • Suitable for sound carts
  • Compact design
  • Easy setup and installation
  • User selectable RF output power level


  • 216 MHz
  • Remote Program Monitoring
  • Personal Cueing
  • Point-to-Point RF Audio Links
  • Assistive Listening


Audio Inputs Line level balanced input 0 dBm for 80% modulation (+20 dBm maximum, XLR-3F)


Unbalanced input (+5 dBm maximum) or 2 wire electret microphones with bias voltage for electret microphone (-35 dBV at 5 kΩ) with 1/4” phone jack

Connectors XLR-3F Combo with 1/4” phone jack


Barrel type 5.5 x 2.1 mm power jack DC

BNC type RF output

Indicators Operation Indicators:


LED bar-graph VU meter

LED antenna load and SWR indicator

LED DC power indicator

Antenna Short loaded BNC whip antenna


BNC RF output connector for an external antenna (sold separately)

FCC Compliance Type certification and type acceptance under FCC Part 95
Power Requirements 12 VDC, 200 mA maximum
Frequency Response 100 Hz to 10 kHz
Audio Distortion Less than 1% at 80% modulation
Gain Control Audio: Limited to 20 dB
Limiter Modulation Limiter: Peak compressor type with high linear overload protection (25 dB)


Attack time less than 1 minutes, recovery time 10 ms

Audio Processing Companded and non-companded to accommodate a variety of receivers
RF Output Power Maximum power output for FCC Part 95 (100 mW)
Frequency Stability Better than 0.002% digitally synthesized, crystal controlled
Frequency Modulation 10 kHz deviation companded


5 kHz deviation non-companded

Operating Frequency 216.0125 to 216.9750 MHz (57 channels)


Custom factory programmed to 10 of 19 available high-fidelity companded channels or may be programmed to 10 of 38 standard non-companded NB channels

Harmonic & Spurious Emissions Better than 50 dB below carrier
Dimensions 3.75 x 1.63 x 5.25" (9.53 x 4.14 x 13.34 cm)
Weight 17.00 oz (481.94 g)
  • Comtek BST 75-216 P Mini Base Station Transmitter with Pro Audio EQ (216 MHz)
  • C-75 Carrying Case
  • SLW-216-75 Short Load Helical Whip Antenna (216 MHz)
  • Antenna Bracket
  • AP-12V1-75 Universal Switching Power Supply (12VDC Output)
  • Limited 2-Year Warranty

Data sheet (BST-75-216_sheet.pdf, 716 Kb) [Download]

Manual (BST-75-216_manual.pdf, 1,559 Kb) [Download]

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