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Updated Troubleshooting FAQ (markdown)

Jakob Ketterl 2023-05-18 17:37:35 +02:00
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Troubleshooting---FAQ.md

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This is a list of commonly occuring problems and questions, in no specific order.
### No audio on specific clients, receiver starts to behave odd as soon as specific clients connects
Please check which version of csdr you installed. One of the most common problems is the missing `deemphasis_nfm_ff` filter for 12kHz audio, which comes into play if your client runs 48kHz audio (or other multiples of 12kHz, other reported cases were using 192kHz).
Please install [my modified version of csdr](https://github.com/jketterl/csdr) to get rid of the error.
### My OpenWebRX installation is missing some / all of the digital demodulation buttons
... and ...
### OpenWebRX doesn't show the type of my SDR device on the "New device page", even though it is supposed to be supported
There's probably some dependency missing. Please navigate to the feature report in the settings area and check if all the requirements for the SDR device type / demodulator in question are fulfilled.
### My OpenWebRX installation is still missing DMR / YSF / D-Star and NXDN
... and ...
### My feature report says that `codecserver_ambe` is mssing. I have codecserver installed. What's wrong?
The digital modes DMR, YSF, D-Star and NXDN use the proprietary voice codec "AMBE" by DVSI. This codec is patented, and the only licensed distribution channel is through chip sales. The chips are available in retail, the most common form they are sold in is USB sticks (also sometimes referred to as AMBE sticks). In order to decode these modes you need to acquire one of these devices and configure it accordingly in codecserver.
It is probably worth noting that there is other methods to decode this codec out there, but since they are unlicensed (and thus likely constitute a patent infringement) are not supported by OpenWebRX.
### My OpenWebRX works fine at first, but stops working when I disconnect and connect again.
This is something that has occured to me when using SDRplay devices, and they seem to be especially prone to this error when connected to a Raspberry Pi. The most probable cause for this is insufficient power supplied to the SDR, so the immediate recommendation is to use a different powersupply and / or a powered USB hub to fix this.