I have two Windows 10 machines on a local network, a tablet running Android 10, an RTL-SDR V3, RF Analyzer 2.0 full version, and the latest Osmocom binaries (64-bit from June 28, 2026).
When I run rtl_tcp on one Windows machine, the other Windows machine can access it through SDR Console v3.3 without problem, I can connect to it using SDR Touch on my tablet, but not using RF Analyzer, I always get the message "Couldn't connect to rtl_tcp instance". The connection does seem to initiate according to the rtl_tcp logs (as you can see with the line "client accepted") but it stops almost instantly :
E:\Radio\rtl_sdr>rtl_tcp -a 192.168.0.10 -p 1234
Found 1 device(s):
0: RTL-SDR Blog, RTL-SDR Blog V3, SN: 4
Using device 0: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
[R82XX] PLL not locked!
Tuned to 100000000 Hz.
listening...
Use the device argument 'rtl_tcp=192.168.0.10:1234' in OsmoSDR (gr-osmosdr) source
to receive samples in GRC and control rtl_tcp parameters (frequency, gain, ...).
client accepted! 192.168.0.12 55204
comm recv bye
Signal caught, exiting!
worker cond timeout
Signal caught, exiting!
all threads dead..
listening...
Of course I made sure that the IP address and port are correct and the firewall is not an issue, as I said it works correctly with SDR Touch. I also tried reading the RF Analyzer logs but they're a little overwhelming and I didn't find an obvious reference to the problem. This issue also looks similar to this other one.
Please help, thank you!
I have two Windows 10 machines on a local network, a tablet running Android 10, an RTL-SDR V3, RF Analyzer 2.0 full version, and the latest Osmocom binaries (64-bit from June 28, 2026).
When I run rtl_tcp on one Windows machine, the other Windows machine can access it through SDR Console v3.3 without problem, I can connect to it using SDR Touch on my tablet, but not using RF Analyzer, I always get the message "Couldn't connect to rtl_tcp instance". The connection does seem to initiate according to the rtl_tcp logs (as you can see with the line "client accepted") but it stops almost instantly :
Of course I made sure that the IP address and port are correct and the firewall is not an issue, as I said it works correctly with SDR Touch. I also tried reading the RF Analyzer logs but they're a little overwhelming and I didn't find an obvious reference to the problem. This issue also looks similar to this other one.
Please help, thank you!