[amsat-bb] Re Help with FCDPP

David G0MRF g0mrf at aol.com
Fri May 6 15:48:38 UTC 2016

Hi Enzo.

If you run it with either the FUNcube dashboard or preferably SDR# you will be able to see what type of problem you have from the spectrum display.
Enter the frequency for a known local signal....beacon / repeater / airport etc.  and you'll be able to see if you have any signal at all.

Turning the bias tee on and off will show if you have problems communicating with it. - Just see if you get 5V on the SMA.
Or you can turn the LNA on and off, this will increase or decrease the noise level from your speakers

Weaker than usual signals on the expected frequency ( - 30/40dB) can indicate either mechanical damage from excessive pressure to the SMA. (This can crack a SMD capacitor)
Or a blown front end MMIC which can happen if its been transmitted into.....Although they are surprisingly rugged to RF.



Hello to the list,
Please i have a FCDPP that doesn’t work properly.
Any chance to send it for a check and if need a repair?
I have tried to leave several messages on the http://www.funcubedongle.com
Site but did not get any reply.
Any help will be really appreciated.

Inviato da iPhone

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