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Buy RTL-SDR Dongles (RTL2832U)

Where to Buy RTLSDR RTL2832U DVB-T Tuner Dongles

The R820T2 RTL-SDR is currently the cheapest, most common and is the best in terms of general usability. The R820T2 has a frequency range of  24 – 1766 MHz (frequencies above 1.2 GHz may require cooling/heatsinking) and is fully 100% compatible with any software for the older R820T.

At RTL-SDR.com we sell significantly improved RTL-SDR dongles at low prices with free shipping. See our announcement post on our V3 units for a full overview of all the features, or scroll down for our store. Also see our V3 users guide for information on using special features of our dongle. Our dongles come with the following improvements:

  • 1 PPM temperature compensated oscillator (TCXO) – Accurate tuning and almost zero temperature drift (2 PPM initial offset, 0.5-1 PPM temperature drift)
  • SMA female antenna port – Most dongles use the less common MCX or PAL antenna ports. SMA is more common, so more adapters and antennas are available for it. It is also more durable and has lower insertion losses.
  • R820T2 tuner – More sensitive than the older R820T tuner. 100% compatible with software for the older R820T.
  • Improved component tolerances – Allows the RTL-SDR to work more optimally over all frequencies.
  • 4.5V USB powered bias tee - Can be enabled by running a simple program (link coming soon). This allows the RTL-SDR to power LNAs (like the LNA4ALL and HABAMP) and active antennas through the coax cable.
  • Experimental: HF Direct Sampling Mode - Listen to 500kHz to 24 MHz with direct sampling. Simply connect an HF antenna to the SMA port, and choose the Q-branch to use.
  • Aluminium case and passive cooling - These units come stock with an aluminium case and passive cooling via thermal pad.
US ShippingInternational Shipping
Purchase on Amazon and receive FREE domestic shipping for orders over $49 and free two day shipping for Prime subscribers! Or use our international cart for FREE shipping from China.FREE registered air mail from China! Paid express shipping also available. Please double check your address in PayPal and enter it using English characters only.

International Shipping Notices
Please note that China Post is increasing their parcel security and this is causing random delays with some parcels. To get around this we can optionally ship via Hong Kong with a carrier like Swiss Post. To use this option select the “Slightly Faster Registered Air Mail” option for $2 USD. Countries US/UK/AUS/RUS/FR/NZ do not need to select this option as they already support the faster EMS shipping option which is used by default for free.

 

Please remember that international air mail can take anywhere between 1 – 4 weeks on average for delivery. During peak times, for remote countries, or if your parcel is subject to random security checks then this may be stretched to 5-6 weeks or more.

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

Includes 1x RTL-SDR Blog brand R820T2 RTL2832U 1PPM TCXO SMA Dongle, 1x 6cm to 20cm telescopic antenna, 1x 20cm to 1.5m telescopic antenna and 1x 4.5cm diameter magnetic mount base with 1M RG174.

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 case with passive cooling, bias tee circuit and break out pads for easy direct sampling modification.

Commonly bought together with one of our SMA adapter sets for a 5% discount.

Amazon USA local in stock.
Chinese worldwide warehouse in stock.

 
RTL-SDR Blog R820T2 RTL2832U 1PPM TCXO SMA Software Defined Radio (Dongle Only)
RTL-SDR Blog R820T2 RTL2832U 1PPM TCXO SMA Software Defined Radio (Dongle Only)

Includes 1x RTL-SDR Blog brand R820T2 RTL2832U 1PPM TCXO SMA Dongle.

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 case with passive cooling, bias tee circuit and break out pads for easy direct sampling modification.

Commonly bought together with one of our SMA adapter sets for a 5% discount.

This product now has resellers based locally in the [UK], [Japan], [India] & [Spain] who can provide fast local customs free shipping. Please note that these are resellers, and they can charge their own independent prices.

Amazon USA local in stock.
Chinese worldwide warehouse in stock.

 
RTL-SDR Blog SMA Pigtail Antenna Adapter Set
RTL-SDR Blog SMA Pigtail Antenna Adapter Set

Includes 1x SMA Pigtail adapter set (6 adapters)

Set of six SMA pigtail adapters with 20cm of RG316 cabling. Contains five SMA to female (Type N, UHF, BNC, PAL, Type F) adapters and one bonus SMA male to SMA male adapter which is often used to connect to devices like upconverters.

Amazon USA local in stock.
Chinese worldwide warehouse in stock.

 
RTL-SDR Blog SMA Straight Antenna Adapter Set
RTL-SDR Blog SMA Straight Antenna Adapter Set

Includes 1x SMA straight adapter set (6 adapters)

Set of six straight adapters with. Contains five SMA to female (Type N, UHF, BNC, PAL, Type F) adapters and one bonus SMA male to SMA male adapter which is often used to connect to devices like upconverters. Less loss than the pigtail adapters.

Amazon USA local in stock.
Chinese worldwide warehouse in stock.

 
RTL-SDR Blog MCX Pigtail Antenna Adapter Set
RTL-SDR Blog MCX Pigtail Antenna Adapter Set

Includes 1x MCX Pigtail adapter set (7 adapters)

Great for if you have the older or other brand dongles that used the MCX antenna connector. Contains 6 MCX to female (Type N, UHF, BNC, PAL, Type F, SMA) adapters and one bonus MCX to SMA male adapter which is often used to connect to devices like upconverters. These do not fit onto our new SMA RTL-SDRs, these are for the older MCX style dongles.

Amazon USA local in stock.
Chinese worldwide warehouse in stock.

 
RTL-SDR Blog Metal Case and Thermal Pad Upgrade
RTL-SDR Blog Metal Case and Thermal Pad Upgrade

Includes 1x Metal Case Set and 1x Thermal pad

Can be used to upgrade any of our older RTL-SDR Blog SMA units that came in a plastic case. Helps prevent interference and also helps to passively cool the R820T2 and other chips. 

Please note that you do not need this for our currently sold RTL-SDR units as those all come with the case and thermal pad by default. Warning: May fit the older plastic case PCBS a little loosely.

Only available from our Chinese warehouse.

Chinese worldwide warehouse in stock.

 
The Hobbyist's Guide to the RTL-SDR: Really Cheap Software Defined Radio (Book)
The Hobbyist’s Guide to the RTL-SDR: Really Cheap Software Defined Radio (Book)

A comprehensive guide to the RTL2832U RTL-SDR software defined radio by the authors of the RTL-SDR Blog. This book is about tips and tutorials that show you how to get the most out of your RTL-SDR dongle. 

The paperback includes the eBook via the Kindle matchbook program. Amazon Prime customers can borrow the book for FREE. Also available for purchase from Amazon sites in UKDE, FR, IT, ES, JP, IN, CA, BR and MX.

 

If for some reason you feel like you don’t trust us then please see our Amazon reviews from our previous RTL-SDR model product sales and our Amazon store seller feedback.

Shipping Information (Click to Expand)

USA

For US customers we highly recommend purchasing our products from Amazon. Amazon will provide you with fast local shipping and shipping is free for orders over $35. If you are a Prime subscriber you also get free 2 day shipping.

US customers may also purchase from our international checkout and choose free shipping from China and we will send via priority air mail (EMS).

International (All countries outside the USA)

Please enter your address using English characters only!

Please note that we have an approximate 1-2 day working day processing time before international parcels get shipped (even express orders).

International orders bought on our cart will be shipped from our warehouse in China. Shipping is free and for supported countries (US/UK/AUS/RUS/FR) we will use priority mail (EMS) meaning an average delivery time of 1 week from the shipped out date. For other countries that don’t support priority mail the item should get to your door within 2 – 4 weeks (possibly longer during peak periods). Please note that this time is highly dependant on the efficiency of the postal and customs agencies within your country, and please understand that this processing time is totally out of our hands. Countries such as Italy, Canada, Brazil, and middle eastern countries are known to sometimes have extremely slow customs agencies. If you need faster shipping please select an express option.

International buyers are reminded that as with any international parcel you are fully responsible for any duties or customs clearance fees required by your country, and that you take full responsibility for the legality of importing. If you have questions about the declared value and customs fees please feel free to contact us at rtlsdrblog_AT_gmail.com. Please watch the tracking information and contact your postal agency if there are any significant delays. If your parcel does not arrive within 4 weeks (6 weeks during December/Christmas period) and the tracking looks stuck, then please contact us at rtlsdrblog_AT_gmail.com and we will open a postal investigation and resend or refund your item. 

Express air courier shipping is also available but this costs much more and we only recommend this for larger shipments, or countries that don’t support priority air mail. With this option we will use either DHL, UPS, or EMS air couriers. Depending on your country your package should arrive within 2-8 business days with express shipping (plus the 1-3 working day processing time). If you wish to use this option then please select your country from the shipping options in the cart. Note that most express couriers will not deliver to a PO box and they may charge additional fees for duty/customs processing. Also please note that there is often a slightly longer initial processing time with express couriers, as they are more slow to provide us with the tracking information. You can expect the tracking info to be provided 2-3 working days after the “in processing” status is sent.

Note that depending on the weight, cost and destination country of your order we may upgrade your shipment to express shipping for free. We will only do this for large orders as express shipments can potentially incur additional duty processing fees.

Note that we have special distribution available in New Zealand, and will ship these parcels via a local express carrier.

Shipping status meanings:

All shipping status updates will come through an email from PayPal.

‘In process’ means that your order and address information has been checked and sent to the warehouse and the parcel is being packed. A tracking number will follow usually by the next 1-2 business days.

‘Shipped’ means that the order has been shipped and can be tracked with the provided tracking number.

How do I track my shipment?

Please note that tracking updates may initially take a few days to start working after receiving the shipped status.

If sent via registered air, then mail will usually be sent either by postal services: China Post, China Post EMS Air Mail, Deutsche Post, Hong Kong Post or Swiss Post. You can initially track the parcel on their respective websites, or aftership.com. However, once the parcel enters your own country tracking on these sites may stop when the parcel is handed over to the local post office, who will usually attach their own tracking sticker. You can then track your parcel on your local post office website. In some countries you may need to call your post office to get an updated tracking number.

Warranty Information (Click to Expand)

We will provide 6 months warranty on manufacturing defects. Please note that if you try the direct sampling or bias tee mods then any warranty will be voided, so please ensure your dongle is working before trying these.

If you suspect a manufacturing fault please contact us through Amazon if you bought there, or email us at rtlsdrblog@gmail.com if you bought from our cart and include your order number and name. Please include details of the fault and a picture of the fault if it is physical damage. If the unit is faulty we will issue either a full refund or send a new unit out depending on your preference.

Wholesale Information (Click to Expand)

If you want to buy 10+ units please contact us directly at rtlsdrblog@gmail.com for a wholesale quote.

Alternative Payment (Click to Expand)

If you don’t want to use a credit card or PayPal we will accept payment through Bitcoin for orders of 2 or more items. Please email us at rtlsdrblog_AT_gmail.com to arrange payment. 

 

Recommended accessories from other sellers

Antennas

Probably the most important part of a radio system is the antenna. There is no one size fits all antenna, every different design will have a trade off. For instance, wide band antennas can receive more frequencies, but will have less gain at any one particular frequency. If you want to receive everything then get a wide band antenna. If you want to receive one frequency with optimal reception, find a tuned narrow band antenna.

Discone Antenna
Discone Antenna

Discones are wideband antennas. This makes them ideal for the RTL-SDR as using a Discone will allow you to receive at almost any frequency with decent performance.

 
FlightAware ADS-B Antenna
FlightAware ADS-B Antenna

A 1090 MHz ADS-B antenna from FlightAware. Is weather proofed and has 5 dB of gain. Uses an N-type antenna connector. See our review post for more information.

Upconverters

The lowest frequency an RTL-SDR can comfortably tune to is about 24 MHz. An upconverter allows you to use your RTL-SDR on HF frequencies which are between 0 – 30 MHz. They work by shifting frequencies between 0 – 30 MHz “up” by a fixed amount into a frequency range that is receivable by the RTL-SDR.

Spyverter
SpyVerter Upconverter

Currently we recommend the SpyVerter as the upconverter of choice. Although it was designed to be used with the Airspy, it works perfectly with the RTL-SDR. It uses a 120 MHz oscillator, has excellent filtering and can be powered via USB cable or via the bias-tee on our RTL-SDR Blog dongles. The SpyVerter uses an innovative new architecture that reduces overloading, has better SNR than other options and can operate all the way down to DC.

With the above performance and features, the included metal case and adapters and at a similar or even lower price compared to other upconverters we think this one is the best value. See our review post for more information.

 
SV1AFN Upconverter
SV1AFN Upconverter

An alternative to the SpyVerter is the upconverter designed by SV1AFN.

It based on the ADE-1 mixer chip, uses a 200 MHz oscillator, has good filtering and works almost down to DC.

 
Ham-It-Up Upconverter
Ham-It-Up Upconverter

Another recommended option is the Ham-It-Up Upconverter. 

This one like the SV1AFN is also based on the ADE-1 mixer, but uses 125 MHz oscillator and is based on an open source design. There is also a metal case available on Amazon and eBay. However, currently we would recommend the SpyVerter or SV1AFN over this option.

RF Filters

RF filters connect between your antenna and RTL-SDR dongle. They help to significantly reduce out of band interference and noise which is very helpful when trying to improve signal strength.

MCM Electronics FM Trap
MCM Electronics FM Trap

If you have strong FM band interference a good FM trap band stop filter such as this MCM one can help reduce this interference. These can be bought for under $1 USD.

 
118 - 138 MHz Air Band Bandpass Filter
118 – 138 MHz Air Band Bandpass Filter

If you are monitoring ACARS or air traffic signals then you may want an air band bandpass filter if you find that you have lots of interference from nearby stations such as FM broadcasts and Pagers.

 
FlightAware ADS-B Filter
FlightAware ADS-B Filter

FlightAware sell a very affordable ADS-B band pass filter. Many users have reported significantly improved reception when they started using this filter. This is probably the best filter to get if you are interested in ADS-B. See our review post for more information.

 
ADS-B HABamp LNA + Filter Combo
ADS-B HABamp LNA + Filter Combo

We also highly recommend the ADS-B HABAmp for receiving ADS-B signals. This is a filter + LNA combination that works very well and will significantly improve ADS-B performance.

We’ve tested these ourselves with the activatable bias tee in our units and found them to definitely work very well.

 
Adam's ADS-B/H-Line/FLARM Filters
Adam’s ADS-B/H-Line/FLARM Filters

Adam (9A4QV) also sells some good low cost filters for ADSB, Hydrogen Line Radio Astronomy or FLARM.

The Hydrogen line is a physics phenomona that can be observed with an RTL-SDR dongle and FLARM is a protocol similar to ADS-B but used more often with gliders and helicopters.

 
Multi HF Bandpass Filter
Multi HF Bandpass Filter

This product is great for if you are using an upconverter together with your RTL-SDR, or other SDR. Contains seven band pass filters that range from 1.6 – 2.5 MHz, 2.5 – 4.7 MHz, 4.7 – 7.5 MHz, 7.5 – 14.5 MHz, 14.5 – 21.5 MHz, 21.5 – 33 MHz and 33 – 56 MHz.

Low Noise Amplifiers

If you have long runs of coax cable then a low noise amplifier (LNA) can help to significantly improve your reception. Coax cable is lossy and the longer it is the more your received signal is attenuated. By adding an LNA near the antenna this loss can be reduced.

LNA4ALL
LNA4ALL

The LNA4ALL is a very affordable wide band low noise amplifier that is very commonly used with the RTL-SDR. Has the ability to be powered externally from any voltage between 6V – 9V, or with a simple modification with 3V – 5V in bias tee mode.

We have tested the LNA4ALL in bias tee mode with the activatable bias tee in our units and found it to work well.

 
Other LNA's
Other LNA’s

There are also several low noise amplifier circuits that can be found very cheaply for sale on eBay and most will do a good job. Unfortunately most don’t provide a bias tee option like the LNA4ALL or HABamp does.

 
ADS-B HABamp LNA + Filter Combo
ADS-B HABamp LNA + Filter Combo

We also highly recommend the ADS-B HABAmp for receiving ADS-B signals. This is a filter + LNA combination that works very well and will significantly improve ADS-B performance.

We’ve tested these ourselves with the activatable bias tee in our units and found them to definitely work very well.

Other Accessories

MCX Dongle Aluminum Case
MCX Dongle Aluminum Case

This aluminum case fits the older styled MCX dongles. An aluminum case can help shield the dongle from signals that are received from sources other than through the antenna. Can really help to reduce out of band interference.

Note that we are currently working on a similar aluminum case for our own SMA TCXO units.

 
Active USB Extension Cable
Active USB Extension Cable

Ideally you want to get the RTL-SDR dongle as close to the antenna as possible. Normal USB cables have a length limit of about 5m before they stop working, but with an active USB cable this can be extended up to 10 to 15 meters.

We recommend these Monoprice cables as they have been reported to work successfully with the RTL-SDR dongle.

 
Active USB Extension Cable
RG6 Coaxial Cable

We recommend using RG6 coaxial cable for most links between your antenna and RTL-SDR. RG6 is low loss cable and it is also very cheap because it is used commercially with satellite TV installations.

RG6 is 75 Ohm cable. Note that the mismatch between 50 and 75 Ohm impedances is completely negligible for RX applications.

 
Clip on USB Ferrite Core
Clip on USB Ferrite Core

Noise and interference can sometimes be induced in the USB cable itself which can show up in the RF spectrum. To stop this noise use clip on ferrite cores on the USB cable. These cores help to suppress unwanted currents in the USB shield.

 
Raspberry Pi 2
Raspberry Pi 2

A Raspberry Pi is a credit card sized computer that runs Linux, or even Windows. With it you can connect an RTL-SDR, run a server, and then remotely send a signal or processed data such as ADS-B aircraft locations back via WiFi or Ethernet cable.

 
USB OTG Cable
USB OTG Cable

A USB on-the-go (OTG) cable is required to use the RTL-SDR on Android phones with software like SDR Touch and Wavesink. We recommend trying to find cables that come with power plugs so that you can use it with a power pack. Using an RTL-SDR can increase CPU usage which can quickly drain a mobiles battery.

 
9:1 Balun
9:1 Balun

If you are using a long wire or random wire antenna with a HF modded RTL-SDR or an upconverter you should use a 9:1 impedance transformer to get good SWR.

There are also several other alternatives available on eBay that use a larger iron core.

 
Wideband Noise Source
Wideband Noise Source

A wideband noise source can be used together with an RTL-SDR dongle to perform measurements on filters and to measure the SWR of an antenna.

See our tutorial here for more information.

 
Wyrd USB Decrapifier
Wyrd USB Decrapifier

If you want the best performance with any SDR you need to find a way to isolate the SDR from any USB/PC noise.

The Wyrd USB Decrapifier does the job of cleaning up any USB signal. When buying a USB isolator then you need to ensure it can handle the speed (Hi-Speed 480 Mbps) and current (260 mA+) needed by the RTL-SDR dongles. We have not tested it, but this unit appears to fit the bill.

 

Recommended alternative SDRs

Airspy
Airspy

We think the Airspy is the SDR with the best RX capabilities in the mid priced SDR market right now. It really shines when used in tough RF environments, such as those found in city and suburban areas. The Airspy is an excellent upgrade from an RTL-SDR dongle. Requires the SpyVerter upconverter add on to receive HF signals.

See our review post for a comprehensive comparison between the Airspy, SDRplay RSP and HackRF.

 
SDRplay RSP
SDRplay RSP

Another good mid range SDR is the SDRplay RSP. This SDR is great value for the price and can receive HF frequencies without an upconverter, but it not as good as the Airspy when running in tough RF environments with many strong signals.

See our review post for a comprehensive comparison between the Airspy, SDRplay RSP and HackRF.

 
Nooelec Nano 2+ RTL-SDR
Nooelec Nano 2+

This is an alternative RTL-SDR to the version we sell. This RTL-SDR is very small and is great for using with portable equipment such as mobile phones and tablets. Costs more than ours but also comes with a TCXO.

 
E4000 RTL-SDR Dongle
E4000 RTL-SDR Dongle

The E4000 is more expensive as it has become rare since it has gone out of production. It has a frequency range of 52 – 2200 MHz with a gap from 1100 MHz to 1250 MHz.

The E4000 RTL-SDR dongle can still be bought from Nooelec on Amazon as well. Due to its rareness, the cost of the E4000 is slowly rising. These dongles used to sell for $20, but are now going for around $50-$100! Best to get them now if you need them before they sell out completely. Though note that for most cases an R820T2 unit is usually better.