# Newbie GNUradio: displaying received Signal RSSI

**URL:** <https://www.ruby-forum.com/t/newbie-gnuradio-displaying-received-signal-rssi/240098>\
**Category:** GNU Radio\
**Created:** [March 27, 2014, 11:50am UTC](https://www.ruby-forum.com/t/newbie-gnuradio-displaying-received-signal-rssi/240098 "2014-03-27T11:50:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\
**Post date:** [March 27, 2014, 11:50am UTC](https://www.ruby-forum.com/t/newbie-gnuradio-displaying-received-signal-rssi/240098/1 "2014-03-27T11:50:25Z")

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Hello Experts,  
first of all I would like to know what RSSI actually is and if it is  
possible to calculate/display the Received Signal RSSI using USRP block  
in GNUradio over Ubuntu 13.10.

2nd: I have connected the waterfall plot directly to the output of  
Receiver USRP block but it is showing blue screen all the time. (am I  
doing it wrong, do i need something else in between for conversion etc).

I shall be very much thankful for your guidance.

Best Regards  
Ali