Re: FM is crap, indeed it is!

GNU Radio
1

Hi Marcus,

after your current discovery of the gory details, you might want to
consider calling the station on it. better yet send them a post card!

They might not even know there is a problem, if you can provide the
stations manager/engineer a picture of the problem. It’s usually enough
to
light a fire under their arse to correct the deficiency. Many stations
are
looking for an edge in the market, properly tuned equipment goes a long
way
to improving the experience and their bottom line.

Even a 1st gen USRP is worlds more advanced then the diagnostic tools
available when most radios stations were in their construction stages.

I applaud your efforts to write a better decoder! of the little bit of
research I have done about RDS and HD radio here in the US. Both are
phase
locked and cycle specific to the pilot oscillator.

If you are going to continue your efforts, I am going to ask that you
Please also write an encoder.

who knows maybe it will lead to better station equipment!

Justin Kelly
N2TOH

http://www.sbrac.org/

2

On 02/19/2012 12:29 PM, Justin Kelly wrote:

line.

Even a 1st gen USRP is worlds more advanced then the diagnostic tools
available when most radios stations were in their construction stages.
Yup, that doesn’t surprise me.

I just sent a quick note to them saying “WTF guys?”.

I applaud your efforts to write a better decoder! of the little bit of
research I have done about RDS and HD radio here in the US. Both are
phase locked and cycle specific to the pilot oscillator.

I haven’t looked into it that much yet. There was a gr-rds module
written a few years back, so maybe I’ll find it and see if I can
integrate it.

If you are going to continue your efforts, I am going to ask that you
Please also write an encoder.

who knows maybe it will lead to better station equipment!
Hmmm. Maybe. I know that Gnu Radio + UHD + USRP has been used in
Europe for production DAB/DAB+ broadcasting in the past
year.

3

I was playing with the gr-rds module just last week and if I’m not
mistaken it uses USRP not UHD, so it work until someone gets around to
updating it.