RTL-SDR Dongle in Linux

I wanted to get a better idea of how the dongle gain was manipulated through software. To do this I first got rtl-sdr and SDRSharp running on my Linux machine.
Added by Jeremy Wright over 5 years ago

I plugged the dongle into my laptop and ran lsusb. The following is the output.

Bus 003 Device 005: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T

The vendor and PID numbers match up with this entry on the rtl-sdr page:

0x0bda 0x2838 E4000 ezcap USB 2.0 DVB-T/DAB/FM dongle

Aaron mentioned that SDR# has the ability to adjust the dongle's internal preamp gain. It runs on both Windows and Linux (via Mono), so I decided to give that a try using the instructions here.

The installation of the udev rules doesn't seem to work properly in the instructions above, but you can follow these.

The kernel also automatically loads the dvb driver module for the dongle to make it available as a TV tuner. This causes rtl_test -t to complain that something is already using the dongle. You can blacklist the offending module in /etc/modprobe.d/blacklist.conf with the line:

blacklist dvb_usb_rtl28xxu

For a quick kill of the driver you can just do:

rmmod dvb_usb_rtl28xxu

SDRSharp should be able to access your dongle then.

What it looks like is that it's rtl-sdr, not SDR# that adjusts the gain of the internal preamp. From what I see in the repo SeeDeR uses rtl-sdr, so it should be possible to adjust the gain through the library without writing code to directly talk to the dongle. Tim and Scott may already know this. I'll start a thread on the forum to ask.


Comments

Added by kathleen swafford 5 months ago

Good post. It really helps us. Its give us lots of interest and pleasure. Its opportunity is Womens Leather Jacketshttps://www.hjackets.com/category/womens-leather-jackets/ so fantastic and working style so speedy. It's really a good article. It gives me lots of pleasure and interest..!!

Added by Carter Wine 5 months ago

If you are the one who likes the technical system then use Linux system because it is much expensive. The professional assignment writers share videos which you can watch and if you like then you go for it.

Added by renuka singh 5 months ago

CGC Jhanjeri is one of the best colleges in the North India and we are providing the best quality of education in various courses.
engineering college in chandigarh
best engineering College in north india
civil engineering college in punjab

Added by renuka singh about 1 month ago

There are many things that are needed to know while being in social networking and this will be a better platform.<br>
Rashpal singh dhaliwal
Rashpal singh dhaliwal
Rashpal singh dhaliwal

Added by Chris Coleman 26 days ago

It's so nice to know all of this.
Chris of concrete patios columbia sc

Added by renuka singh 16 days ago

Counter-Strike: Global Offensive is one of the most popular multiplayer games at the moment. For any CS GO fan out there, a good, well-reputed account is an absolute necessity.<br>
csgo accounts

Added by Barbara Parker 4 days ago

https://fortnitephonecase.com/Red-iPhone-7-Plus-Case Thanks, this website is very helpful.