Audio
Eartec Comstar troubleshooting
The Eartec Comstar 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 Comstar 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 →
Best practice for battery life and long-term storage
Likely cause: Lithium chemistry degrades from deep-discharge and long storage at 0%; partial charge and correct battery type preserve capacity and safety.
- Step-by-step fixGet the fix →
Can I expand past 8 users, and is Comstar compatible with other Eartec systems (UltraLITE, EVADE, PRO16)?
Likely cause: Each Eartec product line uses a different pairing scheme; mixing lines fails to register.
- Step-by-step fixGet the fix →
Charger LED colors — what do green / red / flashing red / no light mean?
Likely cause: The charger reports battery state by LED color; flashing red is a hard fault, not a low charge, so swap the cell rather than waiting.
- Step-by-step fixGet the fix →
Full specs — weight, power, battery, range, temperature
Likely cause: Consolidated from the manufacturer spec sheet so a tech can size power, batteries and range at a glance.
- Step-by-step fixGet the fix →
How do I mute my mic, and what is the repetitive beep in my ear?
Likely cause: Grey button = mic mute with tone confirmation; the low-battery warning is a repeating beep so techs do not confuse it with a mute tone.
- Step-by-step fixGet the fix →
How do I power the Com-Center in the field with no wall outlet?
Likely cause: The base is designed for on-location use and accepts AC, an internal Li battery, or AA cells so a crew is never tied to mains power.
- Step-by-step fixGet the fix →
How do I split the crew into two groups (dual channel) and use the conference feature?
Likely cause: Comstar Com-Centers carry two independent DECT talk groups plus a hardware bridge; the LED color tells you which mode is active.
- Step-by-step fixGet the fix →
Range is short / dropouts on a big site — how do I maximize range?
Likely cause: DECT at 1.9 GHz is line-of-sight limited; raising the base and clearing obstructions is the single biggest range lever.
- Step-by-step fixGet the fix →
The two AC adapters look alike — are they interchangeable?
Likely cause: Different output voltages (5 V vs 9 V) for charger vs base; using the wrong one starves or over-drives the device.
- Step-by-step fixGet the fix →
What band/frequency does Comstar use? Will it cause RF interference or need an FCC license?
Likely cause: DECT 6.0 uses GFSK modulation with TDMA/TDD (1.152 Mbps, ADPCM 32 kbit/s speech) in the licence-exempt 1.9 GHz voice band, physically separate from 2.4 GHz Wi-Fi/Bluetooth.
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 Comstar
- 1. Pick the Eartec Comstar. 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.