how does rtl sdr work?
611265
What is RTL-SDR? RTL-SDR is a very cheap ~$25 USB dongle that can be used as a computer based radio scanner for receiving live radio signals in your area (no internet required). Depending on the particular model it could receive frequencies from 500 kHz up to 1.75 GHz.
397814
Protocol dependencies UDP: Typically, RTP uses UDP as its transport protocol. RTP does not have a well known UDP port (although the IETF recommend ports 6970 to 6999). Instead, the ports are allocated dynamically and then signalled using a different protocol such as SIP or H245.
1119861
The file size difference is the HDR files are compressed with HVAC a more efficient compression and the SDR are not. The file size difference is the HDR files are compressed with HVAC a more efficient compression and the SDR are not.
1456148
The specified candidate's sdpMid and sdpMLineIndex are both null . The RTCPeerConnection currently has no remote peer established ( remoteDescription is null ). This can happen for a number of reasons: ... Attempting to add the candidate fails for any reason.
528627
Loading FRC Firmware to OpenMesh radio Make sure the OpenMesh radio is selected in the Radio dropdown. Make sure the radio is connected to the PC via Ethernet. When prompted, plug in the radio power. The software should detect the radio, load the firmware and prompt you when complete.
522785
XM Radio's ground station transmits a signal to its two active GEO satellites, which bounce the signals back down to radio receivers on the ground. The radio receivers are programmed to receive and unscramble the digital data signal, which contains more than 170 channels of digital audio.
924376
First: Write the dmr id you want to call and press PTT directly. Menu->Contacts->Manual Dial, Write the dmr id, press PTT directly. Second: After write the dmr id, press the menu to confirm, then you can find the call alert. confirm again, you will send a Private call alert to the 4606001 radio.
390714
Full Member. Will the SX PRO dongle still work when 7.0.
959672
In DSL technique, the unused high range of frequency is used for broadband Internet access and the low range is used for voice transmission. In this technique, there is no analog to digital and digital to analog conversion, as there would be in a dial-up modem.
297965
Now for a UE to know the 40 millisecond boundary, all it has to find is 4 consecutive system frame numbers that are same. ... So for the best case, if the UE starts decoding the MIB from RF-0 it will see same system frame number for 4 consecutive radio frames and it will understand that RF-0 is the 40 millisecond boundary.
1471482
RTP stands for Real-time Transport Protocol. ... RTP sends real-time data through the two connected end systems that SIP put together. This means the talking and viewing aspect of your task. RTP works with many other protocols and services to make sure your phone conversation runs as smoothly as possible.
219573
The Wii Remote model number is RVL-003, a reference to the project codename "Revolution". The controller communicates wirelessly with the console via short-range Bluetooth radio, with which it is possible to operate up to four controllers at a distance of up to 10 meters (30 ft) from the console.
972802
['Run length encoding.', 'Differential pulse code modulation.', 'Dictionary based encoding.']
1350437
Mono FM receivers use only the L+R signal, while stereo FM receivers decode both L+R and L-R signals, and are able to reconstruct the original L and R signals. The L+R channel signal is transmitted as baseband audio limited to the range of 30 Hz to 15 kHz.
801318
If you are going TDM, you are slicing up Time and giving separate slots of time to different source signals. ... Frame Sync and Time Demuxing are easily achieved with digital bitstreams. So each source info must need to be digitised and multiplexed into its assigned Time Slot. Hence digital.
249782
Active RFID systems (otherwise known as active RTLS) use battery-powered sensor tags that connect to various access points throughout an area (like a building) and transfer data to the cloud. Active RFID is commonly used for real-time location tracking.
169315
It is possible to tune in RTL using "Add Channels" on a Sky Digibox but you would need an LNB switch to select the Astra-1 LNB whenever you want RTL. ... Likewise, it should be possible to tune in RTL with a Freesat receiver but, again, it could cause problems.