What is R820T2?
The R820T2 is the main tuner chip used in most RTL-SDR dongles. Since it is one Chinese manufacturer producing all of RTL-SDR.com V3, NooElec, FlightAware and most generically branded dongles, the volume restriction is not a problem for them as long as the RTL-SDR is still in demand.
Can you transmit using SDR?
SDR Transceivers are able to both transmit and receive radio signals.
What is Nesdr?
NESDR (pronounced ‘any-ess-dee-are’) are ultra-low-cost, wide-band software defined radios–truly affordable radio for everyone! All models in this series are RTL-SDRs–based on the Realtek RTL2832U integrated circuit. All NESDRs have a warranty period of 1 year or greater.
What is the difference between The R820 and r820t2?
Peters first results show that the R820T2 has better reception and less spurious features at frequencies above about 1.45 GHz and improved frequency stability (with the newer R820T2 dongles that use the SMD oscillator).
Do rtl-sdr dongles with the r820t2 Tuner have better sensitivity?
Recently Nooelec began selling RTL-SDR dongles with the R820T2 tuner chip in them ( Ebay ). The R820T2 tuner has been anecdotally reported as having slightly better sensitivity (~2-6 dB better). It also works much better with Oliver Jowetts experimental RTL-SDR driver which enables HF reception without any hardware modifications.
How to fix the r820t2 SDR chip?
A fix may be to apply a blob of solder to the vias underneath the R820T chip, and then attach a heatsink. The problem also does not occur on the Airspy, a higher performance SDR that also uses the R820T2 chip in its design.
What happened to the Rafael r820t2 chip?
The R820T2 is the main tuner chip used in most RTL-SDR dongles. Several months ago Rafael Micro ceased regular production of their R820T2 chip, and the older R820T has also been discontinued for some time too.