RTL-SDR Blog V3 R820T2 1PPM TCXO HF BiasT SMA Software Defined Radio Software Defined Radio
Applications
An RTL SDR is great for many applications including general radio scanning, air traffic control, public safety radio, ADSB, AIS, ACARS, VDL2, trunked radio, P25/DMR digital voice, TETRA, POCSAG, weather balloons, APRS, NOAA APT or METEOR M2 weather satellites, Outernet, Inmarsat, Iridium, GSM, Milsatcom, radio astronomy, meteor scatter monitoring, DAB, or for use as a low cost panadapter with a traditional ham radio.
Just search our RTL-SDR Blog website (Google please, links are not allowed on eBay) for your application of interest to see some ideas.
Improvements
This RTL SDR unit has several improvements over generic and other brands including:
R820T2 tuner
Improved passive component tolerances
A 1 PPM temperature compensated oscillator (TCXO)
HF mode via direct sampling built in (can tune down to 500 kHz unlike basic RTL-SDR's which can only go to 24 MHz)
SMA F connector
Aluminium shielded case with thermal pad for passive cooling to improve L-Band performance
Software activatable 4.5v bias tee circuit
Improved PCB design for lower noise and less spurs
A USB noise choke, more bypass capacitors, and built in ferrites for less PC noise
Improved ESD protection (additional ESD diode and extra ESD discharge paths)
An improved front end circuit designed for wideband use (other models still use a circuit designed for DVB-T only)
Several breakout pads on the PCB for advanced users
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 (2.4 MHz max stable, 3.2 MHz max if your application is tolerant to USB drops). (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.
This model has several key 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. It also has HF reception capabilities. Most standard RTL-SDR dongles can tune down to 24 MHz at the lowest. This model has hardware that unlocks the "direct sampling mode", and allows for tuning down to 500 kHz. There is a built in 25 MHz low pass filter for optimizing this mode.
Various other improvements over other models have also been applied. For example a choke has been added on the USB line and additional bypass capacitors and power line ferrites have been added for reduced internal & PC noise, the PCB has been redesigned for significantly lower noise performance, ESD protection has been improved, the front end circuit has been optimized for wideband use (other models are still optimized for DVB-T frequencies), the LDO has been upgraded, and several break out pads have been added for advanced users.
The device 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 native USB 2.0 port just in case). Installation on Windows is simple, please Google for the RTL-SDR Blog Quickstart guide (links are not allowed on eBay sorry).
Can tune from 500 kHz to 1.7 GHz and has up to 3.2 MHz of instantaneous bandwidth (2.4 MHz stable). (HF reception below 24 MHz in direct sampling mode with reduced performance). Please note RTL-SDR dongles are RX only.
Package Contain:
1 * SMA Software Defined Radio
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✔ Delivery Time: 7-10 business days (continental U.S.).
✔ Tracking Info: Provided automatically via eBay.
✔ Shipping notification will be emailed to you once package has been shipped
Fast & Reliable Shipping – Your order is our priority!
❗ Note: Alaska, Hawaii, and Puerto Rico may have longer delivery times.
We package all items with care to ensure safe arrival!
Tracking number emailed as soon as your order ships!
ULTRA-FAST SHIPPING – Because you shouldn't wait!
We offer 60-day free returns for your peace of mind. To qualify for a full refund:
Contact Us First: Please message us through eBay Messages before opening a return request - we'll work with you to resolve any issues promptly.
For a faster resolution, please contact us first to discuss your return request.
If the return is due to change of mind, select "Didn't like item" or "Ordered by mistake".
For tem not as described, provide details and photos to help us assist you promptly.
Inspection Process: All returns are inspected upon arrival. We reserve the right to refuse refunds if:
Item shows signs of use/wear
Return doesn't match the original product condition：missing/damaged
How Returns Work:
✓ Contact us → We provide return instructions → Ship back securely
✓ Refunds issued within 3-5 business days after warehouse approval
✓ Original payment method will be credited (processing time may vary by bank)
Important Notes:
• Buyer pays return shipping if reason isn't seller error
• We recommend using tracked shipping for returns
• For defective items: Contact us immediately with photos/video evidence
We stand behind our products and will work to ensure your complete satisfaction!
♦Warranty Coverage:
✓ 90-365 Day Coverage (varies by product - see listing details)
✓ Excludes: Physical damage, liquid exposure, unauthorized repairs
✓ Required: Proof of purchase + clear defect photos/video
✓ Solution: Repair/replacement at seller's discretion
♦Claim Process:
Contact us within warranty period
Provide order number + defect evidence
We respond within 48h with solution
MadHornets has given our customers the best Auto parts, Motorcycle parts available on the market. We do it all, from motorcycle, cars and trucks to SUVs and more. Basically, if it’s on wheels and you need it, we can handle it.
With our extensive knowledge and experience in this industry, we continue to bring you the best auto, motorcycle parts.
We have more than 20,000 square meters of self-owned or third-party warehousing and logistics bases in the United States, the United Kingdom, Australia and other countries, and have a complete supply chain system to deliver high-quality products from all over the world to consumers. We are also committed to the development of Electronics, Home Garden, Stage Lights and other categories.
MadHornets continues to bring you superior quality and cost effective products. We always stand behind our products by our Money Back Guarantee and Manufacturer Warranty. Don't hesitate, add this store to you favorites
✔ Delivery Time: 7-10 business days (continental U.S.).
✔ Tracking Info: Provided automatically via eBay.
✔ Shipping notification will be emailed to you once package has been shipped
Fast & Reliable Shipping – Your order is our priority!
❗ Note: Alaska, Hawaii, and Puerto Rico may have longer delivery times.
We package all items with care to ensure safe arrival!
Tracking number emailed as soon as your order ships!
ULTRA-FAST SHIPPING – Because you shouldn't wait!
We offer 60-day free returns for your peace of mind. To qualify for a full refund:
Contact Us First: Please message us through eBay Messages before opening a return request - we'll work with you to resolve any issues promptly.
For a faster resolution, please contact us first to discuss your return request.
If the return is due to change of mind, select "Didn't like item" or "Ordered by mistake".
For tem not as described, provide details and photos to help us assist you promptly.
Inspection Process: All returns are inspected upon arrival. We reserve the right to refuse refunds if:
Item shows signs of use/wear
Return doesn't match the original product condition：missing/damaged
How Returns Work:
✓ Contact us → We provide return instructions → Ship back securely
✓ Refunds issued within 3-5 business days after warehouse approval
✓ Original payment method will be credited (processing time may vary by bank)
Important Notes:
• Buyer pays return shipping if reason isn't seller error
• We recommend using tracked shipping for returns
• For defective items: Contact us immediately with photos/video evidence
We stand behind our products and will work to ensure your complete satisfaction!
♦Warranty Coverage:
✓ 90-365 Day Coverage (varies by product - see listing details)
✓ Excludes: Physical damage, liquid exposure, unauthorized repairs
✓ Required: Proof of purchase + clear defect photos/video
✓ Solution: Repair/replacement at seller's discretion
♦Claim Process:
Contact us within warranty period
Provide order number + defect evidence
We respond within 48h with solution
MadHornets has given our customers the best Auto parts, Motorcycle parts available on the market. We do it all, from motorcycle, cars and trucks to SUVs and more. Basically, if it’s on wheels and you need it, we can handle it.
With our extensive knowledge and experience in this industry, we continue to bring you the best auto, motorcycle parts.
We have more than 20,000 square meters of self-owned or third-party warehousing and logistics bases in the United States, the United Kingdom, Australia and other countries, and have a complete supply chain system to deliver high-quality products from all over the world to consumers. We are also committed to the development of Electronics, Home Garden, Stage Lights and other categories.
MadHornets continues to bring you superior quality and cost effective products. We always stand behind our products by our Money Back Guarantee and Manufacturer Warranty. Don't hesitate, add this store to you favorites
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