January 30, 2016

RTL-SDR Blog Dongle v2.0 #1

Just received the latest RTL dongle offerings from http://www.rtl-sdr.com. The orignal v1 model turned out to be a RFI nightmare for me. The v1 created noise in my other SDRS on the lower HF bands.

Now that the v2 is out I decided to give it another chance with hopes of minimal RFI. I have only had the v2 for less than an hour and it looks much much better. The new v2 model comes standard with  passive cooling and housed in a aluminum case.

The v2 has the same options as the v1

(v1 & v2) 1 PPM temperature compensated oscillator (TCXO) – Accurate tuning and almost zero temperature drift (2 PPM initial offset, 1 PPM temperature drift)

(v1 & v2)  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.

(v1 & v2)  R820T2 tuner – More sensitive than the older R820T tuner. 100% compatible with software for the older R820T.

(v1 & v2)  Improved component tolerances – Allows the RTL-SDR to work more optimally over all frequencies.

(v1 & v2)  Experimental: 4.5V USB powered bias tee - Can be enabled by soldering two pads on the PCB together. This allows the RTL-SDR to power LNA’s (like the LNA4ALL and HABAMP) and active antennas through the coax cable.

(v1 & v2)  Experimental: Break out pads for direct sampling - Allows easier soldering to pins 4 & 5 on the RTL2832U for enabling the direct sampling mod.

(v2) *NEW* Aluminium case and passive cooling - Our latest units that are shipping come stock with an aluminium case and passive cooling via thermal pad.

The top picture is the v1 & the 2nd picture is the v2. Click the pictures to go full screen.


  1. So v1 was the standard one in the plastic shell? I bought one like this in Feb 2015.

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  3. Yes v1 of the SDR-Blog 820t2 was in a black plastic shell. Still a good dongle but did not work well for me.