Re: HackRF

2020-04-14 Thread Cinaed Simson
Hi Joe - there is certainly a problem with the libraries and firmware of the HackRF:    hackrf_info version: unknown    libhackrf version: unknown (0.5)    Found HackRF    Index: 0 Also, it's unlikely that you want to be running the firmware version    Firmware Version: 2018.01.1 (API:1.02)

Re: HackRF

2020-04-14 Thread Cinaed Simson
Hi Joe - I just noticed you're running the HackRF in a virtualmachine on a PC - which implies you're most likely having problems with the USB drivers on Windows. I don't know anything about Windows. -- Cinaed On 4/14/20 12:16 AM, Joe crossen wrote: Hi guys, I have a HackRF One connected

USRP LO stabilization time ?

2020-04-14 Thread jean-michel.fri...@femto-st.fr
I am considering frequency sweeping a PlutoSDR and a B210, both fitted with AD936x RF frontends. As I was writing the application and reading the libuhd documentation, I read at https://files.ettus.com/manual/page_general.html "After tuning, the RF front-end will need time to settle into a usable

HackRF

2020-04-14 Thread Joe crossen
Hi guys, I have a HackRF One connected to my PC, and a virtual machine running Ubunutu 18.04. Getting the following error when running my flow graph (Osmocom source to WX GUI Scope Sink). Traceback (most recent call last): File "/home/mike/GNURadio/Programs/HackRF_rx_Osmocom_GUI.py", line 97,

Re: USRP LO stabilization time ?

2020-04-14 Thread Sebastian Sahlin
Hi, I believe the following paper may be of interest: https://pubs.gnuradio.org/index.php/grcon/article/view/2 It is indicated that the B210 needs around 3.3 milliseconds minimum to settle and it is, as you say, due to the hardware frontend. What is causing the extra delay I can only guess but

Re: USRP LO stabilization time ?

2020-04-14 Thread Derek Kozel
Hi JM, What is the definition for settled for your application? The LO should be on frequency within a few milliseconds. Possibly you should look at disabling the IQ and DC tracking loops in the AD936x frontends. The USRP has arguments exposed in GRC for that. Derek On 14/04/2020 12:39,

Re: USRP LO stabilization time ?

2020-04-14 Thread jean-michel.fri...@femto-st.fr
For the record ... thanks to the excellent reference provided in this answer, I became convinced that the timing issue does not lie with the B210/libuhd but with the PlutoSDR. After reading

Re: USRP LO stabilization time ?

2020-04-14 Thread Marcus D. Leech
On 04/14/2020 07:39 AM, jean-michel.fri...@femto-st.fr wrote: I am considering frequency sweeping a PlutoSDR and a B210, both fitted with AD936x RF frontends. As I was writing the application and reading the libuhd documentation, I read at https://files.ettus.com/manual/page_general.html "After

Re: HackRF

2020-04-14 Thread Marcus D. Leech
On 04/14/2020 03:16 AM, Joe crossen wrote: Hi guys, I have a HackRF One connected to my PC, and a virtual machine running Ubunutu 18.04. Getting the following error when running my flow graph (Osmocom source to WX GUI Scope Sink). Traceback (most recent call last): File