Re: [Discuss-gnuradio] Anyone have any success getting Pluto to work with WBFM?

[Kyeong Su Shin]

Dear Ed Troy:

I don't have the PlutoSDR with me right now, so I cannot test it now, but a few things to check:

-Make sure that your Pluto can go down to 90MHz alright; it is only rated to operate on 325MHz - 3.8GHz, and not guaranteed to behave well on such frequencies (even when you did made the changes).

-Try lower sampling rate; like 2MS/s. PlutoSDR is known to drop samples at relatively high sampling rates (and yes, I do mean that 5MS/s is too high).

-Try lowering gain; FM signals can easily overload the frontend of such devices.

If I replace that PlutoSDR source block with an Osmocom source block, change the carrier frequency to my local station, and attach a different radio, it works. (Can't test on a PlutoSDR now, as I do not have one with me now).

Regards,

Kyeong Su Shin

On Fri, Dec 15, 2017 at 4:12 PM, Ed Troy <address@hidden> wrote:

Hi,

I have been trying to get my Pluto to work with WBFM, but I am not having any luck. I am attaching a grc file that I am pretty sure should work, but it does not. It just generates sporadic noise. I did the changes recommended to get the Pluto to work over a wider frequency range, and the results indicated that the changes worked. And, I have tried using the Pluto at higher frequencies to detect a WBFM signal, and it still does not work properly. So, I know it has to be something with my grc file.

What am I doing wrong?

Ed



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