SDRTrunk Second tuner with SDRTrunk error

KM6IIN

Newbie
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Jun 15, 2025
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3
Hooked up a second dongle. My primary is an RSPlay and this new one is an RTLsdr. I have the RSP Monitoring 2m and would like to have the RTL on 70cm. SDR Trunk recognizes the RTL but whenever I try to select it as the prefered tuner I get this message. Anyone have a solution to this?

No Tuner.JPG
 

Enforcer52

Broadcastify, Calls Platform, Public Playlist
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Sep 4, 2023
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Lake Livingston, TX
If you unplug the RSP and start SDRT with only the R820T, does in still say it is unavailable?

Have you tried a different usb port? If not try that, I have a usb port on my desktop that refuses to talk to a R820T even though it loads, when all the other usb ports work fine.

Is it plugged into a usb hub? or straight to computer. Hubs can cause issues if not a powered hub.
 

KM6IIN

Newbie
Premium Subscriber
Joined
Jun 15, 2025
Messages
3
If you unplug the RSP and start SDRT with only the R820T, does in still say it is unavailable?

Have you tried a different usb port? If not try that, I have a usb port on my desktop that refuses to talk to a R820T even though it loads, when all the other usb ports work fine.

Is it plugged into a usb hub? or straight to computer. Hubs can cause issues if not a powered hub.
Ends up working out the same, when I only have the RTL plugged in SDRt recognizes that the RTL is plugged in but I still get the no tuner available even though the RTL is selected. I then switched the RTL to the port the RSP was using and still had the same issue.

Side note, RTL works just fine when using SDR++

A USB hub is not currently being used.
 
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