# Simple FM receiver - one last question

**URL:** <https://www.ruby-forum.com/t/simple-fm-receiver-one-last-question/220435>\
**Category:** GNU Radio\
**Created:** [June 9, 2012, 7:35am UTC](https://www.ruby-forum.com/t/simple-fm-receiver-one-last-question/220435 "2012-06-09T07:35:57Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![aris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/258eb7/32.png) [@aris](https://www.ruby-forum.com/u/aris)\
**Post date:** [June 9, 2012, 7:35am UTC](https://www.ruby-forum.com/t/simple-fm-receiver-one-last-question/220435/1 "2012-06-09T07:35:57Z")

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Thank you for reading this.

I have one last error to overcome:

Error 0:  
Block - gr\_freq\_xlating\_fir\_filter\_xxx\_0 - Frequency Xlating FIR  
Filter(gr\_freq\_xlating\_fir\_filter\_xxx):  
Sink - in(0):  
Port is not connected.

Can anyone offer a suggestion that will sort this out?

–  
Regards,  
Phil

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<div class="post-metadata">

**Author:** ![phil](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/e95f7d/32.png) [@phil](https://www.ruby-forum.com/u/phil)\
**Post date:** [June 9, 2012, 8:15pm UTC](https://www.ruby-forum.com/t/simple-fm-receiver-one-last-question/220435/2 "2012-06-09T20:15:00Z")

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gr\_freq\_xlating\_fir\_filter\_xxx\_0 is not connected, connect it to  
something.

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<div class="post-metadata">

**Author:** ![phil](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/e95f7d/32.png) [@phil](https://www.ruby-forum.com/u/phil)\
**Post date:** [June 9, 2012, 8:17pm UTC](https://www.ruby-forum.com/t/simple-fm-receiver-one-last-question/220435/3 "2012-06-09T20:17:21Z")

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> gr\_freq\_xlating\_fir\_filter\_xxx\_0 is not connected, connect it to something.

It’s not connected probably because his gr-osmosdr stuff isn’t  
installed, and that filter is connected to the gr-osmosdr source  
in that flow-graph.

–  
Marcus L.  
Principal Investigator  
Shirleys Bay Radio Astronomy Consortium

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