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acquisition card Realtek Semiconductor Corp. RTL2838 DVB-T
model: Realtek Semiconductor Corp. RTL2838 DVB-T(model id: 897)
possible other names of the device:
RTL2832U
RTL-SDR model V4 (https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/)
vendor:
Realtek Semiconductor Corp.
VendorID:ProductID code of the device:
0bda:2838
year of commercialization:
2025
interface:
USB
tested on:
Trisquel 5.5 Brigantia
tested with the following kernel libre:
3.0.0-24-generic-pae
does it work with free software?
yes
free driver used:
Description:

works with https://github.com/ambrosa/DVB-Realtek-RTL2832U-2.2.2-10tuner-mod_kernel-3.0.0

Seem not to have a firmware, can also do SDR (http://sdr.osmocom.org/trac/wiki/rtl-sdr).

Driver not included in trisquel 5.5 (must be compiled separately).

lsusb
Bus 001 Device 005: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
lsusb -v -d 0bda:2838
Bus 001 Device 005: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
Negotiated speed: High Speed (480Mbps)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0bda Realtek Semiconductor Corp.
  idProduct          0x2838 RTL2838 DVB-T
  bcdDevice            1.00
  iManufacturer           1 RTLSDRBlog
  iProduct                2 Blog V4
  iSerial                 3 00000001
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0022
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          4 USB2.0-Bulk&Iso
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              5 Bulk-In, Interface
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              5 Bulk-In, Interface
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      2
Device Status:     0x0000
  (Bus Powered)
I's an USB radio receiver, please see https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/

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