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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" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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.
- To process your return/exchange, please contact us at [email protected]
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4.4 ★★★★★
Based on 795 reviews
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Product Reviews
★★★★★ 5
Multifunctional dog toy, fetch, chew, dental health
This toy feels like soft rubber, unlike the super hard plastic
Size wise, it would be a good toy to toss and play fetch with. My Aussiedoodle took to it right away. It has numerous nubs that are great for dental health. I use it, as well as other toys with nubs, to offer to my pups with a bit of
smeared on it, to help with their dental health.
🤗 Thank you so much for taking the time to read this review, have a FANTASTIC day!!😊
5★
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Reviewed in the United States on December 27, 2025
★★★★★ 2
Not for aggressive chewers.
Size: Large
Our dog is a 50lb Pit mix. This toy lasted about a week before he took a hole knuckle off. Happy he did not swallow it.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Perfect Chew Toy, Not Too Soft Or Hard
I've been looking for new chew toys for my 2.5 year old German Shepherd that are durable enough to withstand her chewing, yet aren't so tough or hard that she dislikes it and won't chew or play with it at all. I'm so glad I got this large bone chew toy for her because the rubber is just the right amount of toughness without being too hard. She also loves the bacon smell. Another good thing about this is that there are 80 round nubs that stick out of the bone and are flexible to help clean the teeth. You can even put dog toothpaste on them to really help clean their teeth. This is perfect for my dog because she doesn't like toothbrushes or finger wipes. She also loves to play catch with this toy and since it's made of rubber I can throw it & it just bounces around. This is her new favorite toy and she loves it so much that when my Lab tries to play with her or take it away, she does a little warning growl telling her to stay away. She has only ever done that before with her favorite stuffed animal. All of their other toys they usually share, but I'm going to have to buy another one for my Lab. There is a warniìng that says "Not for aggressive dogs." I definitely recommend this chew toy for medium and large dogs that are big chewers, but not agressive. This toy is a good value for the money and will entice your dog with the bacon scent, keep them occupied chewing or playing, & also help with their dental hygiene.
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Reviewed in the United States on October 18, 2025
★★★★★ 5
Colorful, Sturdy & Great Value
Color: Large Set of 4
Purchased for our two puppies when they were 2 months old and weighed about 14 pounds so theses balls were a little big for them to hold in their mouths but that didn't stop them from trying. While they did like these balls they much preferred softer soccer balls, the later of which did not hold up well at all. I had hoped they would play with these balls more when they were older but that hasn't happened 5 months later. I guess it's no fun if you can't tear the toy apart. Colors are very bright and they do enjoy chasing after them as long as I am the one rolling them across the room for them. Maybe when they progress to batting things with their paws they will start to do this for themselves.
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Reviewed in the United States on May 18, 2025
★★★★★ 5
My pup loves them
Color: Large Set of 4
Colors are bright and my dog loves the squeaky! Good size no worries of choking.
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Reviewed in the United States on September 10, 2025