Audio
Telex BTR-800 troubleshooting
The Telex BTR-800 problems live-event techs bring to Ask Roadie most. 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-800 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-to-beltpack talk-around (ISO) not available
Likely cause: The RadioCom system supports wireless talk-around (ISO) that lets packs converse independently of the main intercom channels; it must be enabled and the packs must share the base group for the path to exist.
- Step-by-step fixGet the fix →
Finding clean frequencies in RF-congested venues
Likely cause: The BTR-800 is frequency-agile in 25 kHz steps.
- Step-by-step fixGet the fix →
How do I check the base software/firmware revision?
Likely cause: The BTR-800 has no separate firmware menu; the boot screen is the authoritative place to read the installed software revision, which support uses to confirm whether an update applies.
- Step-by-step fixGet the fix →
Hum, echo or feedback when connected to a two-wire party line
Likely cause: A two-wire line carries send and return on the same pair; if the base is in the wrong mode or the null is not trimmed, the outgoing signal leaks back as hum/echo.
- Step-by-step fixGet the fix →
Interference with nearby systems, or wanting longer beltpack battery life
Likely cause: RF output is switchable (100 mW / 10 mW).
- Step-by-step fixGet the fix →
Multiple BTR-800 systems in one venue interfering with each other
Likely cause: Co-located frequency-agile systems will collide if they land on the same or adjacent channels.
- Step-by-step fixGet the fix →
No mic or no audio at the base headset jack despite good RF
Likely cause: The base headset jack is factory-wired to a specific pinout/standard; Telex and RTS headset wiring differ, so a mismatched headset connects mechanically but the mic/earpiece pins do not line up.
- Step-by-step fixGet the fix →
Random noise bursts or channel opening on RF noise
Likely cause: Tone-code squelch requires the correct sub-signal to open the channel and the RF-noise gate blocks static; trimming the threshold keeps noise out without choking the wanted signal.
- Step-by-step fixGet the fix →
Weak signal or dropouts after remoting the base antennas
Likely cause: UHF signal is heavily attenuated by long or lossy coax runs and by obstructions; proper low-loss cable and correct antenna spacing/height preserve the link budget and diversity performance the receiver needs.
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-800
- 1. Pick the Telex BTR-800. 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.