dmesg |egrep "firmware|dvb|frontend|usb" return
[ 0.080131] raspberrypi-firmware soc:firmware: Attached to firmware from 2021-01-27T22:26:53, variant start
[ 0.090148] raspberrypi-firmware soc:firmware: Firmware hash is 99d9a48302e4553cff3688692bb7e9ac760a03fa
[ 0.142130] usbcore: registered new interface driver usbfs
[ 0.142196] usbcore: registered new interface driver hub
[ 0.142267] usbcore: registered new device driver usb
[ 2.021404] usbcore: registered new interface driver lan78xx
[ 2.021472] usbcore: registered new interface driver smsc95xx
[ 2.951132] dwc_otg 3f980000.usb: DWC OTG Controller
[ 2.951171] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[ 2.951224] dwc_otg 3f980000.usb: irq 89, io mem 0x00000000
[ 2.951675] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[ 2.951693] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.951708] usb usb1: Product: DWC OTG Controller
[ 2.951723] usb usb1: Manufacturer: Linux 5.10.11-v7+ dwc_otg_hcd
[ 2.951738] usb usb1: SerialNumber: 3f980000.usb
[ 2.954130] usbcore: registered new interface driver usb-storage
[ 2.962434] usbcore: registered new interface driver usbhid
[ 2.962446] usbhid: USB HID core driver
[ 3.374499] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 3.614887] usb 1-1: New USB device found, idVendor=0424, idProduct=9514, bcdDevice= 2.00
[ 3.614913] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.934481] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 4.064861] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00, bcdDevice= 2.00
[ 4.064887] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 4.184854] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:1a:39:ce
[ 4.494585] usb 1-1.3: new high-speed USB device number 4 using dwc_otg
[ 4.635355] usb 1-1.3: New USB device found, idVendor=2040, idProduct=5200, bcdDevice= 0.01
[ 4.635381] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4.635398] usb 1-1.3: Product: NovaT 500Stick
[ 4.635413] usb 1-1.3: Manufacturer: Hauppauge
[ 4.635429] usb 1-1.3: SerialNumber: 4035345063
[ 7.966191] dvb-usb: found a 'Hauppauge Nova-TD Stick (52009)' in cold state, will try to load a firmware
[ 7.983102] dvb-usb: downloading firmware from file 'dvb-usb-dib0700-1.20.fw'
[ 8.028506] usbcore: registered new interface driver brcmfmac
[ 8.057103] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.raspberrypi,3-model-b.txt failed with error -2
[ 8.197838] dib0700: firmware started successfully.
[ 8.715482] dvb-usb: found a 'Hauppauge Nova-TD Stick (52009)' in warm state.
[ 8.716051] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
[ 8.716993] dvbdev: DVB: registering new adapter (Hauppauge Nova-TD Stick (52009))
[ 8.717029] usb 1-1.3: media controller created
[ 8.720228] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
[ 9.175911] usb 1-1.3: DVB: registering adapter 0 frontend 0 (DiBcom 7000PC)...
[ 9.175986] dvbdev: dvb_create_media_entity: media entity 'DiBcom 7000PC' registered.
[ 9.496119] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
[ 9.497654] dvbdev: DVB: registering new adapter (Hauppauge Nova-TD Stick (52009))
[ 9.497846] usb 1-1.3: media controller created
[ 9.501815] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
[ 9.732981] usb 1-1.3: DVB: registering adapter 1 frontend 0 (DiBcom 7000PC)...
[ 9.733042] dvbdev: dvb_create_media_entity: media entity 'DiBcom 7000PC' registered.
[ 10.023689] dvb-usb: Hauppauge Nova-TD Stick (52009) successfully initialized and connected.
[ 10.024091] usbcore: registered new interface driver dvb_usb_dib0700
[ 12.458734] SMSC LAN8700 usb-001:003:01: attached PHY driver [SMSC LAN8700] (mii_bus:phy_addr=usb-001:003:01, irq=POLL)
[ 12.691875] usb 1-1.3: DVB: adapter 1 frontend 0 frequency 0 out of range (45000000..860000000)
[ 12.765747] usb 1-1.3: DVB: adapter 0 frontend 0 frequency 0 out of range (45000000..860000000)
pi@raspberrypi:~ $
The usb DVB-T device works on a server in VM under Proxmox (debian) with Plex server --> it's under linux.
(personally I don't want to use Plex but Tvheadend which is more suitable for my use)
My usb DVB-T device also worked perfectly on my Vu+Duo Twin Linux Receiver under enigma that I had a few years ago and that I sold.
It seems complicated for me to do the tests with dvb-apps. I installed it but then I don't know what to do...