IFR 2975 Issue ?

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Jim53
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Posts: 2
Joined: Wed May 11, 2016 3:25 pm

IFR 2975 Issue ?

Post 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
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fineshot1
Posts: 1125
Joined: Wed Oct 12, 2005 5:13 am

Re: IFR 2975 Issue ?

Post 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.
fineshot1
NJ USA
Jim53
New User
Posts: 2
Joined: Wed May 11, 2016 3:25 pm

Re: IFR 2975 Issue ?

Post by Jim53 »

Thanks to fineshot1 appreciate the response.
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fineshot1
Posts: 1125
Joined: Wed Oct 12, 2005 5:13 am

Re: IFR 2975 Issue ?

Post by fineshot1 »

No problem - you are welcome but i must stress that i am guesstimating in my response.
fineshot1
NJ USA
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