Here is how the FM Receiver I made using the GNU Radio Companion.
(Basically, I was following this tutorial by VYE6Y on youtube.)
FM Receiver
- Problem: Unfortunately for me, the GNU Radio gives no output. It opens a window as you can show below but no matter what I click or change, there is nothing to be heard. I think, the signal is being processed as the Bandpass spectrum can be seen(as shown in the 2nd image below, which shows the characteristic peak at the center-frequency of the channel).
I am using GNU Radio Companion 3.7.11.1, which is fairly new, on Windows 8.1.
What cannot be a problem:
- The RTL-SDR Dongle works. I can run it, for example, without any problems on CubicSDR, where it produces crisp clear sound.
- Also, I can run a different FM Receiver also made on GNU Radio Companion (though the parameters and scheme of the receiver are different and not quite tuned.)
- Any ideas why there is no sound?
Multiply const
block is acceptingint
s, whereas the blocks before and afterMultiply const
expectfloat
s. (Notice the green color). Probably that is the only mistake. Will test tonight with the Dongle. $\endgroup$