SKU: 5291128550

Comtek BST-25/216 Synthesized Base Station Transmitter

Sale price$130871.25 Regular price$145412.50
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Description

Comtek BST-25/216 Synthesized Base Station Transmitter57 Channels in the 216 217MHz Range Single Window, Bright LED Display VU Bar Graph Meter Test Tone Generator Balanced Mic or Line Level Micro Controller Rackmountable Telescopic Antenna Mounts Operates w the Phonak MicroEar Receiver 12 Volt DC Power The BST 25 216 Synthesized Base Station Transmitter from Comtek is an auxiliary base station transmitter designed to operate in the newly assigned 216 217MHz band under part 95 of the FCC regulations. For

  • 57 Channels in the 216-217MHz Range
  • Single Window, Bright LED Display
  • VU Bar Graph Meter
  • Test Tone Generator
  • Balanced Mic or Line Level
  • Micro Controller
  • Rackmountable
  • Telescopic Antenna Mounts
  • Operates w/ the Phonak MicroEar Receiver
  • 12 Volt DC Power

The BST-25/216 Synthesized Base Station Transmitter from Comtek is an auxiliary base station transmitter designed to operate in the newly assigned 216-217MHz band under part 95 of the FCC regulations. For highest fidelity operation, the PR-216 receiver must be used with the wide-band companded channels.

This transmitter may be used for personal cueing, for tour guide applications, language interpretation and for assistive listening. The BST-25/216 also operates with the Phonak microEar VHF in-ear receiver in the narrow-band non-companded channels.

The BST-25/216 transmitter incorporates the latest digital and analog technologies to produce low residual noise, wide dynamic range, and extended frequency response rendering the most natural sound possible from a wireless system.

57 user-selectable channels in the 216 to 217MHz range: 38 standard narrow-band, non-companded channels; 19 high-fidelity narrow-band channels with companded audio processing
Single window, bright LED display for exact frequency and channel, VU bar graph meter, antenna condition and lock-out indicator
Test tone generator for receiver testing and audio level referencing
Balanced mic or line level with 60 dB of control range to accommodate any audio level
Micro controller automatically sets the modulation deviation, audio mode for processing, and the EQ when corresponding channels are selected
It can be rackmounted for AC or 12 V DC power and can accommodate a variety of remote antennas
In the Box
Comtek BST-25/216 Synthesized Base Station Transmitter
  • C-16 Carrying Case
  • BST-25 Operator's Manual
  • TWA-72 Whip Antenna
  • AP-12V1 Power Adapter
  • 1-Year Warranty
Audio Inputs Mic XLR, 600 ohm balanced -40dBV (nominal)
Line XLR, 10 kohm balanced 0dBV (nominal)
Connectors XLR-3 female audio input connector for mic and line input
XLR-4 male power input 12 V
BNC type RF output connector
Indicators LED bar graph VU meter displays audio input (modulation)
Two digit alpha numeric display shows operating channel
Five digit numeric display shows operating frequency
Antenna indicator displays deficient antenna condition
Lock out indicator shows tuning has been disabled
Antenna Telescopic antenna mounts directly into top of transmitter
BNC RF output connector for optional external antenna
FCC Compliance Type accepted under Part 95
Power Requirements 12 V DC, 300 mA max
Freq. Response (Rec/Repro) 80Hz-8kHz
Audio Distortion Less than 1% at 80% modulation
Modulation Soft compressor type with high (25 dB) linear overload protection, attack time less than 1ms, recovery time 10ms
Gain Control Greater than 40 dB
Generators Test tone: 400Hz 0.05% distortion
Modulation Frequency: 5 and 10kHz deviation
RF Output Power Set for 100mW for FCC Part 95
Frequency Stability Better than 20 ppm. digitally synthesized, crystal controlled
Operating Frequency 216-217MHz
Harmonic & Spurious Emissions Better than 55 dB below carrier
Dimensions (W x H x D) 6.5 x 1.8 x 5.6" (165.1 x 45.7 x 142.4mm)
Weight 2.8 lb. (1.2kg)
Packaging Info
Package Weight 8.0 lb
Box Dimensions (LxWxH) 24.0 x 11.0 x 8.0"
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 5291128550

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★★★★★ 5
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Color: Rustic Brown and Black, Color: Rustic Brown and Black
Super nice shelf, looks high end
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Reviewed in the United States on April 23, 2026
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Gloria
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★★★★★ 5
A great and strong book stand!
Size: 4-Tier (10.43"x14.17"x45.67")
This book stand is great and strong. Each shelf holds up to 5 kg and it is quite easy to put together and in the video I show exactly how to do it. And there are some hooks that you hang in the sides of the stand if you want to hang anything there! You make sure to see the measurements because they are right, and for me was just right!
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Reviewed in the United States on January 12, 2025
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audrey
Louisville, US
★★★★★ 5
4 tier shelf
Size: 4-Tier (10.43"x14.17"x45.67")
quick and easy assembly. i use these in my pantry. its a rental so i couldnt add shelves.
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Reviewed in the United States on April 23, 2026
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kittydancer02
Birmingham, US
★★★★★ 4
Pay attention to instructions
Size: 4-Tier (10.43"x14.17"x45.67")
You definitely need to pay attention to the instructions when building because it’s very easy to build this incorrectly. The numbers on the instructions are small so please pay attention. Other than that the bookshelf is sturdy, lightweight, and holds so many books.
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Reviewed in the United States on January 26, 2026
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Cuba, US
★★★★★ 5
Nice bookshelf
Size: 4-Tier (10.43"x14.17"x45.67")
Nice bookshelf
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Reviewed in the United States on March 6, 2026

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