First off I would like to say Hi! I'm new here, and new to this radio thing in general so I have tons to learn. I recently got into SDR and have a setup that consists of an
RTL-SDR and a ground plane antenna and I was wondering what causes the deviation in the frequency of the stuff i'm picking up. To clarify and give examples. NOAA weather broadcasts on 7 frequencies and I pick up pretty much all of them, but also NOAA will show up somewhere it totally shouldn't be like the 2m Band I picked up a FM station in my area 101.5 which comes in crystal clear on that frequency and it also exists at 30.25 (Not crystal clear but still intelligible. If this is a Radio thing I would like to know more about it, maybe point me in the direction of the theory etc. If it's a hardware defect that would be nice to know as well since it will help me to not go chasing all the signals I'm receiving when they're all just duplicates of each other.
Thanks,
Ice
RTL-SDR and a ground plane antenna and I was wondering what causes the deviation in the frequency of the stuff i'm picking up. To clarify and give examples. NOAA weather broadcasts on 7 frequencies and I pick up pretty much all of them, but also NOAA will show up somewhere it totally shouldn't be like the 2m Band I picked up a FM station in my area 101.5 which comes in crystal clear on that frequency and it also exists at 30.25 (Not crystal clear but still intelligible. If this is a Radio thing I would like to know more about it, maybe point me in the direction of the theory etc. If it's a hardware defect that would be nice to know as well since it will help me to not go chasing all the signals I'm receiving when they're all just duplicates of each other.
Thanks,
Ice