Re: SDRC and Pluto with external reference

Siegfried Jackstien

you first have to "search" the radio in definitions before you can try to start it!!

dg9bfc sigi

ps why mess around with 25 megs?? the signal quality is lower when not using 40mhz!!

Am 27.07.2021 um 16:09 schrieb Karen Tadevosyan, RA3APW via

Hello All,


my question is about using SDR Console (V3.0.27) and Adalm Pluto (Rev. D) with an external 25MHz reference.


Pluto configuration for external reference was done according to section “Alternative reference frequencies”.


The modification went well which was confirmed by software and hardware (Pluto’s buffer of the external reference signal (LTC6957) turned on and internal 40 MHz TCXO turned off; 25 MHz reference signal comes to the XTALN pin of AD9363)

After Pluto is connected to the computer the device is seen as a memory but when trying to “Start radio” it says that the device was not found.


It was tested on two computers and with different external reference frequencies - 25 and 40 MHz.


Maybe something needs to be changed in SDR Console settings with which Pluto worked fine before the modification?


73 de Karen, ra3apw


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