Audio
Telex BTR-300 troubleshooting
The Telex BTR-300 problems live-event techs bring to Ask Roadie most (also called BTR-300/TR-300, BTR300, RadioCom BTR-300, RadioCom TR-300). Pick your symptom, or describe your own in plain words, and get the likeliest fix first, with the manual page when there is one.
Common BTR-300 errors & problems
What techs run into most, and what's usually behind it. The step-by-step fix for your exact unit is in Ask Roadie.
- Step-by-step fixGet the fix →
beltpack audio distorted, hiss, or low level on TR-300
Likely cause: Proper gain staging keeps the FM link out of overmodulation and above the noise floor.
- Step-by-step fixGet the fix →
BTR-300 picks up other radio / interference on a channel
Likely cause: An open FM receiver with no carrier passes whatever is on frequency.
- Step-by-step fixGet the fix →
BTR-300 power supply / what voltage does BTR-300 take
Likely cause: Under-rated supplies cause dropouts/brownouts under load.
- Step-by-step fixGet the fix →
BTR-300 won't work with Clear-Com / RTS party line
Likely cause: Each party-line standard uses different impedance/level and channel wiring.
- Step-by-step fixGet the fix →
dropouts / swooshing, short range on BTR-300 wireless
Likely cause: VHF range depends on correct antenna length for the band, polarization match and clear placement.
- Step-by-step fixGet the fix →
loud squeal / howl from BTR-300 with no wired intercom connected
Likely cause: An unterminated 2-wire interface reflects the base's own audio back as feedback.
- Step-by-step fixGet the fix →
no audio at base or beltpack headsets
Likely cause: Base transmitter off or channel disabled mutes the return path.
Not on the list? Describe it your way, or paste the error code off the display. Ask Roadie works the problem with you until it's fixed or you have a clear next move.
How Ask Roadie helps with the BTR-300
- 1. Pick the Telex BTR-300. It's already in the list.
- 2. Describe what you're seeing. In your own words, or the error code off the screen.
- 3. Get the likeliest fix first. Steps in order, the manual page when there is one, and a note when other techs have confirmed it.
- 4. Still broken? Tap 👎 and it keeps going from where you left off.