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For Your Every Summer RSVP, with Code: SUMMER15
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" |
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Best
Format: Paperback
Best summer workbooks! Simple and quick for a summer day! They love getting the stickers to show they completed the page!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 5
Excellent Summer Learning Workbook
Format: Paperback
The Summer Bridge Activities Kindergarten to 1st Grade workbook is a fantastic way to keep kids engaged and learning over the summer! It covers a great mix of subjects, including math, language arts, science, social studies, and even fitness activities. The exercises are fun, age-appropriate, and designed to reinforce key skills while preparing kids for the next grade.
I love the balance between learning and interactive activities—it keeps children motivated without feeling like homework. The layout is colorful and easy to follow, making it a great resource for both parents and kids. Highly recommend for summer learning and skill retention!
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Reviewed in the United States on March 18, 2025
★★★★★ 5
Excellent Summer Workbooks - Keeps Kids Engaged and Ready
Format: Paperback
These workbooks have been an absolute lifesaver for keeping my kids on track over the summer! I was looking for a resource that would help them retain what they learned and prepare for the next school year without feeling like a chore, and these deliver perfectly.
What I particularly love is how well **organized they are by days**. This structure eliminates any guesswork and makes it incredibly easy to assign manageable chunks of work each day, which helps to **keep my kids consistently on track**. There's no overwhelm, just steady progress.
The content is engaging, and it genuinely seems to reinforce key concepts in a fun way. We've had **absolutely no complaints** from the kids, which is a huge win for any summer learning material! I highly recommend these workbooks for any parent looking for a structured and effective way to bridge the academic gap during the summer break.
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Reviewed in the United States on May 28, 2025
★★★★★ 5
⭐️⭐️⭐️⭐️⭐️ An Engaging Way to Prevent Summer Slide!
Format: Paperback
This Summer Bridge Activities Workbook is an essential tool for keeping kids engaged in learning over the summer! Covering reading, writing, math, science, and social studies, it ensures a well-rounded review of key subjects in just 15 minutes a day. The fun, interactive activities keep kids motivated, and the inclusion of flashcards, stickers, and online IXL practice adds extra value. I’ve recommended this to parents every year because it helps students transition smoothly into the next grade while maintaining their academic progress. If you want to prevent learning loss in a fun, low-stress way, this workbook is a fantastic choice!
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Reviewed in the United States on March 15, 2025
★★★★★ 5
Good review
Format: Paperback
This workbook touches on many important skills that are taught in 3rd grade. It’s a great workbook that can be used by parents or someone who is doing summer tutoring.
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Reviewed in the United States on February 10, 2026