GNU Radioでrtl-sdrドングルを使う

​$sudo apt show gr-osmosdr

[sudo] user のパスワード: 
Package: gr-osmosdr
Version: 0.2.0-2
Priority: optional
Section: universe/libdevel
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: A. Maitland Bottoms <bottoms@debian.org>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 8,738 kB
Depends: python3 (<< 3.9), python3 (>= 3.8~), python3:any, libc6 (>= 2.17), libgcc-s1 (>= 3.0), libgnuradio-osmosdr0.2.0 (>= 0.2.0), libgnuradio-pmt3.8.1 (>= 3.8.1.0~rc1), libgnuradio-runtime3.8.1 (>= 3.8.1.0~rc1), liblog4cpp5v5, libpython3.8 (>= 3.8.2), libstdc++6 (>= 5.2)
Recommends: gnuradio, gr-fosphor
Homepage: http://sdr.osmocom.org/trac/wiki/GrOsmoSDR
Download-Size: 953 kB
APT-Sources: http://jp.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
Description: Gnuradio blocks from the OsmoSDR project
The Osmocom project is a family of projects regarding Open source
mobile communications.
.
While primarily being developed for the OsmoSDR hardware, this block
as well supports:
 - FUNcube Dongle through gr-fcdproplus
 - FUNcube Dongle Pro+ through gr-fcdproplus
 - sysmocom OsmoSDR Devices through libosmosdr
 - RTL2832U based DVB-T dongles through librtlsdr
 - RTL-TCP spectrum server (see librtlsdr project)
 - MSi2500 based DVB-T dongles through libmirisdr
 - gnuradio .cfile input through libgnuradio-blocks
 - RFSPACE SDR-IQ, SDR-IP, NetSDR (incl. X2 option)
 - Great Scott Gadgets HackRF through libhackrf
 - Nuand LLC bladeRF through libbladeRF library
 - Ettus USRP Devices through Ettus UHD library
 - Fairwaves UmTRX through Fairwaves' fork of UHD
 - AIRSPY Receiver
 - AIRSPY HF+ Receiver
 - SoapySDR support
 - Red Pitaya SDR transceiver (http://bazaar.redpitaya.com)
 - FreeSRP through libfreesrp
.
Example applications include osmocom_fft, osmocom_siggen,
and osmocom_spectrum_sense.
.
By using the OsmoSDR block you can take advantage of a common
software API in your application(s) independent of the underlying
radio hardware. This package provides C++ header files,
documentation, and Python3 wrappers to the library.

$

RTL2832U based DVB-T dongles through librtlsdr
これがインストールされるようだ。

無事インストールされました。