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Signals moving the opposite way of my tuning
Posted: Sat Sep 03, 2016 9:15 am
by Ben1551
The best way is to show it with a photo
My antenna setup isn't the best right now so that cant be helping.
Re: Signals moving the opposite way of my tuning
Posted: Sat Sep 03, 2016 3:37 pm
by DanubeBCL
Hello,
the signals moving from left to right must be "ghosts", that is mirror products due to overload/intermodulation in a tuner stage. Try to reduce tuner gain.
Are there strong local stations near you?
73, Heinrich
Re: Signals moving the opposite way of my tuning
Posted: Sat Sep 03, 2016 5:16 pm
by CaptainNemo
I suppose they are artifact (images and so on).
It is common in a "low cost" sdr systems.
Trying to reduce those artifact -- setting gain, bw, filtering etc... -- is part of our hobby...
Maybe not the best part... sometime can be annoying...
bye
Re: Signals moving the opposite way of my tuning
Posted: Sun Sep 04, 2016 10:42 am
by Ben1551
I have one station near me "BBC radio Devon" i have another cheap (£5) radio and it picks up this station no matter what frequency you are tuned to if it is connected to my big antenna.
Talking of the antenna it is probbaly the worst you could think of in the worst location
Yes thats right a cb aerial covered on both sides by a roof by any chance was the roof acting as a mirror?
Also dont laugh too much at my artwork i never got a proper picture of it
Re: Signals moving the opposite way of my tuning
Posted: Sun Sep 25, 2016 12:59 pm
by Ben1551
The newest version of the sdruno software has fixed this problem