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IFR 2975 Issue ?

Posted: Wed May 11, 2016 3:33 pm
by Jim53
I am trying a simple task of tuning my IFR 2975 to pick up an FM radio station. I can see the signal being transmitted at 101.5 mHz but cannot get it to demodulate to give me audio out of the speaker. Will kick myself I am sure but what am I missing? I do get the carrier noise but no audio.

using antenna port
RX set to FM
demod audio
generators off
FM output off


Thanks ahead of time

Re: IFR 2975 Issue ?

Posted: Fri May 13, 2016 5:25 am
by fineshot1
Typically FM radio stations transmit about 100khz wide and the typical
FM setting in a service monitor is about 5Khz so you are most likely
not getting enough of the modulation to decode.

Re: IFR 2975 Issue ?

Posted: Sat May 14, 2016 12:42 pm
by Jim53
Thanks to fineshot1 appreciate the response.

Re: IFR 2975 Issue ?

Posted: Tue May 17, 2016 12:14 pm
by fineshot1
No problem - you are welcome but i must stress that i am guesstimating in my response.