Hello All:
I at least have the LoRa Pothos SDR project transmit part working on my Linux box.
I am able to transmit messages, but the receiver section does not seem to be working.
I ran the PothosGui with the Lora project, transmit at 800 MHz and using the RTL-SDR was able to see the spectrum at that frequency, and as you see by the images, the spectrum is being used. I am just unsure why it is not receiving.
I have both receive “antenna’s” (little black ones) on each of the Rx low and Rx high.
The same frequency and gain levels are on both Source and Sink.
Images are attached.
Logs:
[00:15:51.923000] SoapySDR: Make connection: ‘LimeSDR-USB [USB 3.0] 9062000C42220’
[00:15:52.093000] SoapySDR: Estimated reference clock 30.7196 MHz
[00:15:52.093000] SoapySDR: Selected reference clock 30.720 MHz
[00:15:52.094000] SoapySDR: Device name: LimeSDR-USB
[00:15:52.094000] SoapySDR: Reference: 30.72 MHz
[00:15:52.094000] SoapySDR: Init LMS7002M(0)
[00:15:52.094000] SoapySDR: LMS7002M cache /home/mikek/.limesuite/LMS7002M_cache_values.db
[00:15:52.095000] SoapySDR: Ver=7, Rev=1, Mask=1
[00:15:52.128000] SoapySDR: LMS7002M calibration values caching Enable
[00:15:52.134121] Pothos.Topology: Topology destructor threw: I/O error: RemoteProxyEnvironment::transact(): connection inactive
[00:15:52.668000] SoapySDR: Rx Filter calibrated from cache
[00:15:52.670000] SoapySDR: Tx Filter calibrated from cache
[00:15:53.409000] SoapySDR: Rx Filter calibrated from cache
[00:15:53.411000] SoapySDR: Tx Filter calibrated from cache
[00:15:54.071000] SoapySDR: Make connection: ‘LimeSDR-USB [USB 3.0] 9062000C42220’
[00:15:54.240000] SoapySDR: Estimated reference clock 30.7197 MHz
[00:15:54.241000] SoapySDR: Selected reference clock 30.720 MHz
[00:15:54.241000] SoapySDR: Device name: LimeSDR-USB
[00:15:54.241000] SoapySDR: Reference: 30.72 MHz
[00:15:54.241000] SoapySDR: Init LMS7002M(0)
[00:15:54.242000] SoapySDR: Ver=7, Rev=1, Mask=1
[00:15:54.275000] SoapySDR: LMS7002M calibration values caching Enable
[00:15:54.815000] SoapySDR: Rx Filter calibrated from cache
[00:15:54.817000] SoapySDR: Tx Filter calibrated from cache
[00:15:55.557000] SoapySDR: Rx Filter calibrated from cache
[00:15:55.559000] SoapySDR: Tx Filter calibrated from cache
[00:15:55.596000] ::1: SetFrequency using cache values vco:1, csw:210
[00:15:55.600000] ::1: SetFrequency using cache values vco:1, csw:208
[00:16:19.019000] ::1: ############################################################
[00:16:19.020000] ::1: Tx calibration values found in cache:
[00:16:19.020000] ::1: | DC | GAIN | PHASE
[00:16:19.020000] ::1: —±----±-----±-----
[00:16:19.020000] ::1: I: | 773 | 1973 | -9
[00:16:19.020000] ::1: Q: | 80 | 2047 |
[00:16:19.020000] ::1: ############################################################
[00:16:19.020000] ::1: ############################################################
[00:16:19.020000] ::1: Rx calibration using RSSI INTERNAL ON BOARD loopback
[00:16:19.020000] ::1: Rx ch.A @ 800 MHz, BW: 30 MHz, RF input: LNAL, PGA: 24, LNA: 15, TIA: 3
[00:16:19.020000] ::1: Rx calibration: using cached values
[00:16:19.021000] ::1: Rx calibration values found in cache:
[00:16:19.021000] ::1: | DC | GAIN | PHASE
[00:16:19.021000] ::1: —±----±-----±-----
[00:16:19.021000] ::1: I: | 0 | 2047 | 0
[00:16:19.021000] ::1: Q: | 0 | 2047 |
[00:16:19.021000] ::1: ############################################################
[00:16:21.835000] SoapySDR: L 1392640
Thanks,
MikeK
Va3TeC
