Everything looks OK, I can make the self test, I can update the firmware of the LimeSDR (but sometimes it see usb 2.0 instead of 3.0)
But when I trying to receive some signals with gqrx the reception is very weak, just a noise!
Ok, it’s bad, but this is not the end. Signal transmission also works very bad. I tried to use this example to tranmit data at 90 Mhz
but it looks like it only works for the first couple of seconds (program is work, but i hear a noise in FM radio from my mobile phone for about 1 second)
Please help me, i’m new to limesdr. I have no clue if I am doing something wrong, or if my limesdr mini is defective.
Now i am not familiar with gqrx so much nor Limesuite, But
in Lime suite do the automatic update(skip if version is= i FW:5 HW:1 Protocol:1 GW:1.27 )
(Modules -->programming–>(new window) Program mode should be automatic)
unplug replug
then connect
for each tab press default after that’s done
press gui—> chip!
as for Gqrx it should do the calibrations IQ and DC spike removals it self(i think or have options like other sdr software supporting Lime mini) Sdrangel is also a good option a bit of a learning curve but has a heap load of features, also on windows only sdr-console works great thou newest version does not work with my limesdr mini so i use 3.0.2
P.S
i usually have TIA and LNA gain at max and adjust PGA
Thx for fast reply. I repeated your actions in the program. But received signal is also very weak. When I use TIA, LNA and PGA gain in gqrx it just makes more noise, no signal.
I have an two antennas with SMA connectors. Bought them along with lime mini from store.
The problem is that in all review articles and videos the signal was quite good. But I seen just a noise or very low signal (I can’t even catch the fm radio that my mobile phone catches.)
Thou i do believe there is a change your Lime mini suffers same fuckup as mine goes Deaf and not even TETRA tower thats 500M away makes much of a signal lol and thats with a stacked dipole on freq with dual LNA’s lol but it randomly works just fine and beats my other sdr’s by a mile
[ Clock Network Test ]
->REF clock test
Test results: 3670; 16867; 30064 - PASSED
->VCTCXO test
Results : 6710987 (min); 6711141 (max) - PASSED
->Clock Network Test PASSED
[ FPGA EEPROM Test ]
->Read EEPROM
->Read data: 12 07 1A 12 07 1A 02
->FPGA EEPROM Test PASSED
[ LMS7002M Test ]
->Perform Registers Test
->External Reset line test
Reg 0x20: Write value 0xFFFD, Read value 0xFFFD
Reg 0x20: value after reset 0x0FFFF
->LMS7002M Test PASSED
As I can see, your board is OK. Hence it looks like configuration issues.
Do you have a possibility to connect RF output of LimeSDR–USB to RF input via cable? Then we can prepare register setup to test the board.
I have a similar problem with my LimeSDR Mini, in my case I can not obtain any signal from the TX port.
Could you please help me? Maybe a test (as you have mentioned) could help me to figure out if there’s a solution to my problem. I have a cable (SMA-SMA) to connect the output and input ports.
I’ve posted the info related to my problem, unfortunately I haven’t received any comments.
100Mhz NO antenna connected