Request for additional support for RTL-SDR and SDRplay

[radiojitter]

Hello I could not find a forum where i could request for features.

Friends, i am proposing for a paypal donation based campaign to request Andras to add few features for RTL-SDR and i need your suggestion. There are few requests mentioned in http://blog.sdr.hu/support but i am not sure these are directed toward RTL-SDR and SDRplay.

The proposed request.

1. To add more control in browser like KiwiSDR. For example to control /change frequency,gain,sampling rate
2. device string , to support direct sampling so that HF can be received in RTL-SDR via direct sampling

Please suggest/comment as appropriate. Many Thanks Priyasloka

[sq2mo]

I believe direct sampling can be set by editing start_rtl_command in config_webrx.py.

[pumatrax]

You need to use a different rtl-SDR build to use I or Q branch. I believe keenerd has a fork on github for you. You just add a -D x where x is 0,1,2

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I believe direct sampling can be set by editing start_rtl_command in config_webrx.py.

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[radiojitter]

thanks Pumatrax , i will try that.

In GQRX and GNU RADIO block or even SDR Sharp software we have option to choose Q channel. I believe those must be different implementation.

from config_webrx.py

start_rtl_command="rtl_sdr -s {samp_rate} -f {center_freq} -p {ppm} -g {rf_gain} -".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate, ppm=ppm) format_conversion="csdr convert_u8_f"

I was trying to see the option associated rtl_sdr executable

rtl_sdr -? rtl_sdr, an I/Q recorder for RTL2832 based DVB-T receivers

Usage: -f frequency_to_tune_to [Hz] [-s samplerate (default: 2048000 Hz)] [-d device_index (default: 0)] [-g gain (default: 0 for auto)] [-p ppm_error (default: 0)] [-b output_block_size (default: 16 * 16384)] [-n number of samples to read (default: 0, infinite)] [-S force sync output (default: async)] filename (a '-' dumps samples to stdout)

[ha7ilm]

Hi Priyasloka,

Regarding your second question, I hope this helps:

https://github.com/simonyiszk/openwebrx/wiki/Using-RTLSDR-in-direct-sampling-mode-with-OpenWebRX

The first one is already being worked at (however, I am still doing the university thus progress very slowly with new features).

Cheers,

Andras

[bennybubble]

Hello Andras,

I ran into this piece of art yesterday, installed everything today (lubuntu, rtlsdr) and it worked the first time. Very impressive !! I second the plan to (remotely) set a frequency and gain!

Keep up the good work!

-ben

[djbr1]

Hello Andras, Just installed openwebrx with sdrplay, works like charm. Please go ahead with option to set a frequency. thx HB9TXB