Ft8cn on Rfinder android tablet to kx2 through digilink
It almost works. It receives and decodes beautifully. Without using digirig, it does the transmission cycle giving a solid 15 second transmission on the selected portion of the frequency. So, VOX will work
Digigig is USB c to USB c on cat. Audio is digirig out split to headphones and microphone on the kx2. Cables are correct and working
The audio reaching the radio is not the transmission cycle. It is a quick blip followed by nothing for the cycle. I tested this with a separate speaker So, it’s not the radio
That leaves Ft8cn, the tablet USB and the digirig
Ft8cn seems to create the correct signal when not connected. So, something is happening when the digirig system is connected
The digital ct connection seems to work. For example, the program can be used to change the radio frequency and the cycles appear to be correct. The transmit light goes on when it should. But there is no sign of a signal to be transmitted
I noticed enquires about other radios with a similar issue so I am thinking that there is an issue that is not radio or tablet specific
This is a picture of what pops up when opening ft8cn. It accords with what the troubleshooting guide suggests should be in a pc. But my reading suggests that this is not consistent with an Android tablet’s USB
Can this be the problem?
I forgot to thank you for your earlier prompt response. My apologies
I reinstalled FT8cn and put nothing in the settings except a call sign. Connected to nothing it goes through the routine to receive, and goes to transmit on cue. I interrupt the transmit cycle by plugging in the Digirig but without the radio connected.
It interrupts the transmission, asks for confirmation of the connection and then says rig connection confirmed. Again, it cannot know the type of radio because I didn’t input that. It can only know that something was connected to the USB
It carries on with the remainder of the transmission cycle but there is no audio or spectrum. The picture was a screenshot taken at the moment of plugging the digirig into the USB of the tablet.
So, somewhere between the program and the digirig the correct transmission communication is lost. It doesn’t seem to be in the usualFT8cn settings, because I didn’t set anything and got exactly the same result as I get when the KX2 settings are input and the radio connected. I checked the FT8cn settings before and after attaching the USB cable and there is no change
I had the exact same problem when trying to link a smartphone to my Yaesu. Perfect receive, would trip the rig to transmit on transmit cycles, but would send nothing for 15 secs before reverting to receive.
The answer, it turns out, is that there is nothing wrong with anything (!). The problem lies in that the developers at Google have chosen to remove audio from the micro-USB / USB-c connector from Android 11 / 12 onward. Your hardware and mine were working fine within their specs, except the specs had been changed. In earlier versions of Android, you can go into Developer Mode and ensure audio is available at said connector on your device BUT BEWARE. Most smartphone / tablet sellers do tweak the version of Android they put out. Samsung famously loads their devices with a load of their own programs, which you can’t uninstall. Some disable audio at the USB connector.
I solved the issue by going down another route altogether, using purely audio signals. I ignored the USB connector, and instead used the 3.5mm jack on my 'phone, linking the 'phone’s speaker output to my rig’s mic, and my rig’s headphone output to my smartphone’s mic. Not my invention, I did exactly what is stated here…
and it worked supremely well.
CAVEATS - 1. There is no longer a digital link between your rig and the tablet/smartphone. Changing the frequency on one will not change the frequency on the other, so for the purposes of the auto-generated log if nothing else, you have to tell both devices yourself.
Most tablets do not have a socket for an external mic. You may need to use an external soundcard. Or you could use a smartphone…
ADVANTAGE - No software downloads or installs, the same exceedingly simple and low-cost interface will work across a whole host of devices.
As you can imagine I cannot offer any guarantees that this will work or that you will not overload the inputs to either device using the audio route. You do this at your own risk. All I can tell you is mine works supremely well (PS I put mine in a nice little box)