search

gqrx-sdr / gqrx

Software defined radio receiver powered by GNU Radio and Qt.
http://gqrx.dk
GNU General Public License v3.0
3.11k stars 545 forks source link

AGC: Hardware vs Software #1371

Closed kelogs closed 2 months ago

kelogs commented 2 months ago

I think you are confusing hardware AGC with software AGC. The Airspy HF+ has no programming interface for setting any gain.

The AGC control you are referring to in SDR# must be the software AGC. Gqrx has that too under "Receiver Options". The hardware AGC is only available for some devices like RTLSDR. Unfortunately, gqrx can not know whether a device supports hardware AGC or not, so the only options I have is to show it or not for all devices.

I would like to hear a few words on these two AGCs.

AFAICT GQRX software implementation in CAgc class is not correlated in any way with Gnuradio's hardware AGC (in osmosdr::source class). Is it fine to use them both simultaneously ? Any other tips welcome.

Thank you

argilo commented 2 months ago

This issue tracker is for bug reports and feature requests. For questions about Gqrx functionality, please use the discussion group: https://groups.google.com/g/gqrx