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RTL-SDR Blog R820T2 RTL2832U 1PPM TCXO SMA Software Defined Radio with 2x Telescopic Antennas

4.3 out of 5 stars 212 customer reviews
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  • Includes 1x RTL-SDR Blog brand R820T2 RTL2832U 1PPM TCXO HF Bias Tee SMA Dongle (V3), 1x 6cm to 20cm telescopic antenna, 1x 20cm to 1.5m telescopic antenna and 1x 4.5cm diameter magnetic mount base with full braid RG174.
  • Great for many applications including general radio scanning, air traffic control, public safety radio, ADSB, AIS, ACARS, trunked radio, P25 digital voice, POCSAG, weather balloons, APRS, NOAA APT weather satellites, radio astronomy, meteor scatter monitoring, DAB, or for use as a low cost panadapter with a traditional ham radio.
  • Several improvements over generic brands including use of the R820T2 tuner, improved component tolerances, a 1 PPM temperature compensated oscillator (TCXO), SMA F connector, aluminium shielded case with thermal pad for passive cooling, activatable bias tee circuit, thick braid RG174 coax on the antenna base and a copper foil sticker on the antenna base for improved antenna performance.
  • Can tune from 500 kHz to 1.7 GHz and has up to 3.2 MHz of instantaneous bandwidth. (HF reception below 24 MHz runs in direct sampling mode)
  • The included telescopic antennas are great for beginners! Our long and short antennas cover almost the entire frequency band that is receivable by the RTL-SDR. Our antenna base has a larger more stable 4.5cm diameter and also comes with full braid RG174 coax which is a large improvement over the lower quality cabling used by the generic brands.
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Technical Details

  • Brand Name: RTL-SDR Blog

Product Description

This is an RTL-SDR software defined radio receiver with RTL2832U ADC chip, R820T2 tuner, 1PPM TCXO, SMA F connector and aluminium case with passive cooling. Tunes from 500 kHz to 1.7 GHz with up to 3.2 MHz of instantaneous bandwidth. (HF works in direct sampling mode - V.3 models and above only). Perfect for use as a computer based radio scanner with free software like SDR#, HDSDR, SDR-Radio, Linrad, GQRX or SDR Touch on Android. Works on Windows, MacOS, Linux, Android and even embedded Linux computers like the Raspberry Pi.

Great for many applications including general radio scanning, monitoring air traffic control, public safety, ADS-B aircraft radar, marine AIS, ACARS, trunked radio, P25/MotoTRBO digital voice, POCSAG, weather balloons, APRS, NOAA APT and Meteor M2 weather satellites, radio astronomy, DAB, or for use as a low cost panadapter with a standard ham radio.

Includes two telescopic antennas with magnetic mount. The short antenna is perfect for ADS-B when collapsed and works up to around 230 MHz when extended. The larger antenna is perfect for frequencies between 230 MHz down to 50 MHz. You can improve reception and stability of the large antenna by placing the magnetic base on any metal plate such as a cookie tin lid. For custom antennas note that this dongle has an SMA F connector (not RP-SMA).

This model has several improvements over other models. It uses the improved R820T2 tuner, has a 1PPM TCXO (2 PPM initial offset, 1 PPM temperature drift), has improved component tolerances and an SMA F connector. It also comes with a software activatable bias-tee circuit for powering external devices such as LNA's and active antennas.

Requires USB 2.0 (works on most USB 3.0 ports, but we cannot guarantee it to work on all so please ensure your PC has a USB 2.0 port just in case). Installation on Windows is simple, please Google for the free RTL-SDR Quickstart Guide for installation instructions.


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Customer Reviews

Top Customer Reviews

Verified Purchase
This is by far the best dongles I've used to date. I have a bunch of R820T's along with a r820t2. I didn't notice much of a difference between those units. When I saw these units appear I was hesitant because I already own a t2 but when I noticed the higher accuracy TXCO I decided to go in for 2 of them w/ the antennas. At first I was not impressed at all with the reception due to not being able to pickup the noaa. My little Baofengs have no problem with stock whips. All my other R820t's are connected to roof antennas and I didn't have the proper adapter to test with that antenna. So after playing around for awhile positioning the antenna I decided to mount the antenna onto a metal object, I used an old side cover from a PC tower and prepped the surface - removed paint in a small area.. That improved the signal, I could actually hear something now. I still wasn't satisfied, so I removed the sticker off the bottom of the antenna mount and checked for continuity. I noticed the metal dish had a good ground but the magnet did not, it was glued in. I removed the magnet, cleaned off the old glue, set the magnet back in and glued around the sides of it allowing the back of the magnet cover to sit metal to metal. (Removing the glue and redoing it might be over kill since the metal dish would make contact also) I also pried out the dish that the magnet sits in and re-seated it, getting it started where the ground wire gets pinched and on a flat level surface, I press down. Being this is mass produced it was uneven. I left the sticker off the base and retested, OMG I was getting crystal clear reception. I was getting as good as a signal as my roof mounted antenna!!

As for the freq correction (ppm) both my units are ZERO and centered on the freq.
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Verified Purchase
What a wonderful world we live in when we can get such astonishing electronics for equally astonishing bargain prices.

I bought an earlier R820T based RTL-SDR a few years ago. It was a fun thing to play with, but that was about all it was - a plaything. Something caused me to recently rediscover it, and to my delight, the 'state of the art' has moved forward in the several years that have passed.

I know there are 'entry level' units currently offered on Amazon for half the price of this unit, but I decided to be 'extravagant' and get this unit instead. The manufacturer is a reputable and respected company that contributes generously to the radio community overall with an excellent blog full of great content and I was pleased to support them, and to see what I'd get in return.

The unit didn't disappoint. Quite the opposite - it exceeded expectations greatly.

It is hard to know how much of the improvement is related to the two antennas provided and in truth I attach little value to their proud claim of using 1% tolerance components - well designed circuits rarely need such exactness.

Actually, I sort of do know the impact of the antennas. Using the older product and then comparing it to the newer product with the short antenna set to a similar length to the older product's supplied antenna, I saw a few dB of signal improvement. That's nice, particularly from my unfortunately located in the basement shack. Oh - and when I used the larger telescoping antenna, I could adjust that to bring in another 20 dB of signal over the noise floor. Wow. That's stunning (but also mainly the antenna rather than the dongle).
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First off, I received this new dongle as a RTL-SDR.COM contest winner. I've been RTL-SDR'ing for a while, both from my PA home and my temporary apartment in WA. The original RTL-SDR dongle worked great in the PA country side, especially using a log periodic at 55 feet. A FM trap was all that I needed.
The 'old' plastic covered design has had major noise problems here in WA.
I stayed up most of the night enjoying my 'new' dongle and, I have been amazed at just how much difference the new design and the aluminum case make. Laptop noise is all but gone and the frequency stability is amazing. 'Should have ordered one months ago; it would have saved me a lot of time building filters that mostly didn't work.

This is the way to go! Metal case. Great stability. You will need a SMA set of adapters to daisy chain your filters, especially a SMA to F connector for a good FM trap. Do the base ground mod recommended by …....... The 'long' antenna can be adjusted to the best length for your frequency. There are “wind your own” band pass filter designs for those that need them; just google what you need.

You can buy cheaper dongles; BUT don't. You will wind up buying this one later anyway!
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Verified Purchase
The RTL-SDR Blog R820T2 RTL2832U 1PPM TCXO SMA Software Defined Radio with 2x Telescopic Antennas is a nice, introductory SDR starter kit for the price and given RF performance. I getting the device operating in about 5 minutes, to include the downloading and installation of the 3rd party, bulk USB driver, using the program SDR# for the control interface.

The SDR radio with supplied antenna, beyond the standard UHF/VHF bands, providing a casual radio listener with numerous additional options from listing to stereo FM (see photo) to NOAA Weather Service (see photo) to simultaneous monitoring of all 40 channels in the CB band (see photo). The 24 MHz to 1.7 GHz frequency range of the device not permitting for the listening of general AM broadcast.

The RTL-SDR device and very understandable given a cost of $24.95, not providing any means to decode various digital modes such as C4FM, P25, D-Star ... Since the price of the device and included hardware in the kit permits for a broad range of users, the principle limiter being access to a computer, will not delete any points for not including the necessary driver program and user interface software to control and operate the SDR.

Such device and similar, being optimal for use in advance middle and high school RF projects or part of a greater curriculum with an SDR kit provide to a small group of students (e.g. 4 students per radio). The radio providing an opportunity to learn via interaction of a real, not simulated nature, the general properties of radio to the more mathematical IF and FFT, along with carrier and transmission modes (AM, FM, USB, LSB ...), to include in a direct feedback manner for the student, how alterations in tuning, bandwidth, modes, filter, ... contribute in the received or audible output of the radio.
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