Help required for SDC Skimmer for Flex

Hi!

I would like to ask for help from my esteemed colleagues.

When controlling the slice tuning frequency, the center frequency of the panorama is often changed. This leads to constant resetting of all decoders in the skimmer program. Also it can lead to IQ stream out of the frequency plan.

Q: Can I get an IQ stream that will not be linked to a SmartSDR panorama?

Are you asking about a list of Flex API TCP commands?

There is a section in the Flex WiKi for this: https://github.com/flexradio/smartsdr-api-docs/wiki/SmartSDR-TCPIP-API

In the list of TCP commands:

Alan. WA9WUD

Thank you, Alan!

I see a lot of interesting information. Hopefully, I'll find some answers.

Questions I want to ask before studying the documentation:

• What UDP port number does the transceiver open to receive DAX-TX datagrams?
• Is the CALLBACK process used to send datagrams, or do I have to define the time at which to send datagrams myself?

From the Primer:

Setting the UDP streaming port

In a multi-client environment each client needs its own UDP streaming port if it wants to receive streamed data. Most clients will want streaming data. It includes, for example, meter values such as signal strength, power output, etc. The default streaming port is 4991 and that is fine if you will be in the unusual position of being the only client talking to the radio. In most practical cases you’ll need to set the port to something else.

Generally, it makes sense to set the streaming port at the beginning of a session. The following command is sent on the TCP port:

c<command_number>|client udpport <port#>

e.g.

You may not know what UDP ports are already in use, so it’s a good idea to first find a free port. Try starting at, say, 4993, test the port and keep moving up by one until you find a few port.

The radio will respond with R1|0|

At this point, you will start receiving streaming data on the specified port. Make sure you’ve initialised the port!

KC2G made an open source Linux based Flex DAX application.

GitHub - kc2g-flex-tools/nDAX: Flex 6xxx DAX (digital audio transport) connector to PulseAudio

https://github.com/kc2g-flex-tools/nDAX

Flex 6xxx DAX (digital audio transport) connector to PulseAudio - GitHub - kc2g-flex-tools/nDAX: Flex 6xxx DAX (digital audio transport) connector to PulseAudio

Perhaps you can see how he returns (TX DAX) the audio stream to the Flex Server (radio).

Alan. WA9WUD