/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureIntroduction I wrote a review (and created a video ) for a Rohde &amp; Schwarz FPC series spectrum analyzer eight years ago, and although I explored some of the demodulation capability back then, I never used it for a real-life scenario. Fas...en-USTelligent Community 12https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureThu, 22 Jan 2026 23:07:08 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdshabaz0<p>Figured I&#39;d document this now before it drags and I forget what I did. This is how the EBYTE module can be connected to the Pico. But, I&#39;ve just noticed there are lots of CC1101 boards on Amazon etc., so it&#39;s not essential to dead-bug an EBYTE module, because any CC1101 board could be connected with jumper cables to a Pi Pico too.</p> <p><img alt=" " height="635" src="/resized-image/__size/1622x1270/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-03628102-917d-4008-8476-0ad8b3ba19cd/ebyte_2D00_to_2D00_pinheader_2D00_schematic.jpg" width="811" /></p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureThu, 22 Jan 2026 13:20:41 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdcolporteur1<p>Your skills and perseverance far exceed mine. I like that you continue to use your development board. I&#39;m envious.</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureWed, 21 Jan 2026 20:31:36 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdDAB0<p>Great post.</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureWed, 21 Jan 2026 14:32:42 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cddougw1<p>Pretty slick application of experience and instrumentation.</p> <p>Are there just 2 messages (On and Off) ?</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureWed, 21 Jan 2026 11:30:22 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdmichaelkellett1<p>Great blog ! I have the same analyser but I&#39;ve never felt I use it enough - I&#39;ll be hunting for RF links to reverse engineer (when I get time ......).</p> <p>MK</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureWed, 21 Jan 2026 11:27:20 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdneilk0<p>Fantastic piece of work, Shabaz!</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureWed, 21 Jan 2026 09:42:53 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdAndrew J1<p>Astounding. I guess that&rsquo;s what 10,000 hours of experience gets you - I&rsquo;m always amazed at the projects you and others come up with here. &nbsp;Now, if you could just tell me how to stop my heat pump overheating my house, that would be great!</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureTue, 20 Jan 2026 23:39:34 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdgenebren0<p>Well done! Stay Warm!</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/test-and-measurement/b/blog/posts/fsk-demodulation-with-r-s-fpc-spectrum-analyzers-or-how-i-achieved-an-optimal-room-temperatureTue, 20 Jan 2026 22:48:36 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:03628102-917d-4008-8476-0ad8b3ba19cdkmikemoo1<p>[mention:b0bc65b9ecdc4307bd967592f00e340a:e9ed411860ed4f2ba0265705b8793d05]&nbsp;Awesome job!&nbsp;&nbsp;This level of engineering just blows my mind.&nbsp; Thanks for sharing.</p><img src="https://community.element14.com/aggbug?PostID=29472&AppID=13&AppType=Weblog&ContentType=0" width="1" height="1">