ADALM-PLUTO (PlutoSDR) Revision C

categories: radio
tags: plutosdr sdr

Analog Devices sells a relatively inexpensive software-defined radio ADALM-PLUTO (PlutoSDR). PlutoSDR has a built-in Linux OS, and by attaching a USB-OTG (on the go) type Ethernet adapter, you can remotely observe radio waves without a microcomputer.

In the articles on PlutoSDR Memorandum, Modification of PlutoSDR, Operation Test of Modified PlutoSDR, [S-band GNSS signal]](https://blog.goo.ne.jp/osqzss/e/2f20d39f8ed94f35ada91d65fabc96e3), Prof. Takuji Ebinuma of Chubu University has reported the results on challenging satellite signal reception of Indian positioning satellite IRNSS (NavIC) using L5 band and S band Signal.

In the articles, it was written about remodeling to 2 channels each for transmission and reception and replacing with a highly stable TCXO (temperature compensated crystal oscillator). I thought that PlutoSDR had only one channel each for sending and receiving, so I was surprised. I had purchased PlutoSDR before, but I wanted to remotely observe radio waves at the university, so I purchased an additional one.

The top is the Revision B that I purchased before, and the bottom is the PlutoSDR board photo of the Revision C that I purchased this time.

PlutoSDR comparison between Rev. B and C

In Revision C, it was upgraded to 2 channels each for transmission and reception. Also, an external clock input and output has been added, and the TCXO mounting position has been changed from the front side of the board to the back side.。

After reading Professor Ebinuma’s article, I also wanted to try replacing the 0.5 ppm TCXO.