# Listen to radio station fm or am

**URL:** <https://www.ruby-forum.com/t/listen-to-radio-station-fm-or-am/209895>\
**Category:** GNU Radio\
**Created:** [July 25, 2011, 10:46pm UTC](https://www.ruby-forum.com/t/listen-to-radio-station-fm-or-am/209895 "2011-07-25T22:46:05Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\
**Post date:** [July 25, 2011, 10:46pm UTC](https://www.ruby-forum.com/t/listen-to-radio-station-fm-or-am/209895/1 "2011-07-25T22:46:05Z")

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Hi,

I wanted to try connecting to a radio station and listening to it. Is  
there a command for this? … such as usrp\_fft.py (which is for other  
use), etc?

I have 2rfx1800 and the 64mhz stock clock.

Thanks in advance,  
Walter

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**Author:** ![w\_barnes](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/f08c70/32.png) [@w\_barnes](https://www.ruby-forum.com/u/w_barnes)\
**Post date:** [July 26, 2011, 1:45am UTC](https://www.ruby-forum.com/t/listen-to-radio-station-fm-or-am/209895/2 "2011-07-26T01:45:42Z")

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Hi Walter,

you can use usrp\_wfm.py, it is on the gnuradio examples. However you  
must  
worry about frequencies if you inted to listen comercial AM or FM  
stations,

Edmar

2011/7/25 Walter B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

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**Author:** ![w\_barnes](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/f08c70/32.png) [@w\_barnes](https://www.ruby-forum.com/u/w_barnes)\
**Post date:** [July 26, 2011, 1:49pm UTC](https://www.ruby-forum.com/t/listen-to-radio-station-fm-or-am/209895/3 "2011-07-26T13:49:21Z")

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Thanks all for the answer! I believe though that I cannot listen to  
radio stations because the daughterboards RFX 1800 range from 1.5GHz to  
2.1GHz which is only for cell phones?

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**Author:** ![w\_barnes](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/f08c70/32.png) [@w\_barnes](https://www.ruby-forum.com/u/w_barnes)\
**Post date:** [July 26, 2011, 4:09pm UTC](https://www.ruby-forum.com/t/listen-to-radio-station-fm-or-am/209895/4 "2011-07-26T16:09:27Z")

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Hi,

There is an (older) article on listening to FM radio in Linux Journal  
[http://www.linuxjournal.com/article/7505](http://www.linuxjournal.com/article/7505)

It’s good to understand how GNU Radio and the demod chain works, and  
what the parameters of usrp\_wfm.py do.

However, on the hardware side you need the TVRX or WBX board to tune to  
the right frequencies.

Matthias

Am 26.07.2011 um 13:48 schrieb Walter B.:

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**Author:** ![w\_barnes](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/f08c70/32.png) [@w\_barnes](https://www.ruby-forum.com/u/w_barnes)\
**Post date:** [July 26, 2011, 3:49pm UTC](https://www.ruby-forum.com/t/listen-to-radio-station-fm-or-am/209895/5 "2011-07-26T15:49:04Z")

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On 26/07/2011 7:48 AM, Walter B. wrote:

> Thanks all for the answer! I believe though that I cannot listen to  
> radio stations because the daughterboards RFX 1800 range from 1.5GHz to  
> 2.1GHz which is only for cell phones?

That is correct, Walter.

Can I suggest that if you’re going to head down the path of Software  
Defined Radio development that you get yourself a couple of  
books to give you the necessary background in both radio and signal  
processing?

```
   o Any recent edition of the ARRL handbook has very good

```

introductory chapters on radio  
o Handy set of references here:

> **[Digital signal processing](https://en.wikipedia.org/wiki/Digital_signal_processing)**
>
> Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations. The digital signals processed in this manner are a sequence of numbers that represent samples of a continuous variable in a domain such as time, space, or frequency. In digital electronics, a digital signal is represented as a pulse train, which is typically generated by the switching of a transistor Digi...