It would be nice if SmartSDR had that feature. And it may well do so. I just cannot find anything telling that it does or how to use it.
I thought, and still do, that PSDR had a feature similiar to Passband tuning or IF Shift. Where you could move the passband, without changing the receive frequency.
My Yaesu FT-1000 MP MKV has it.
So I figured SSDR has the same function and I just cannot find it. Or, a reference to it.
Depending on why you want to move the IF:
On the panadapter, hover the mouse over an edge of the (blue) filter, left-click and drag to where you want.
If you are trying to avoid interference, turn on the TNF (click at bottom of screen) then place the filter over the problem signal. This will give you a variable width notch filter inside your passband.
And I thought I remember PowerSDR having it as well.
Hovering the mouse over the filter opposite the side where you could vary the filter width, (depends on USB LSB) the pointer would change to a hand. Holdung the left mouse button down, you could then move the filter without changing frequency.
Or, maybe I'm getting senile in my old age!
How about this, from the Software manual section 28.6.4: Filter Control Widget
"The Filter Control Widget is used to adjust the high cut and low cut of the Receive Filter. To initiate the Filter Control Widget, hover your mouse over the Carrier Frequency just above the horizontal axis Frequency bar. This will cause the Filter Control Widget to appear. Within the control there are three sections separated by dotted lines."
"The center section adjusts both the high cut and low cut of the filter simultaneously. Hovering over the center section will display a four way arrow. Clicking and dragging up and down from within this section will decrease/increase the low cut while increasing the high cut of the filter effectively making the Receive Filter bar wider. Clicking and dragging left and right will move the Receive Filter bar left and right relative to the Carrier Frequency"
That might make more sense then.
Thanks for your suggestion.
I must be loosing perspective on this item. The signal is digitized at the antenna and the slice "mixes" it down to baseband for listening/display. As there is no IF, everything coming into the antenna is presented exactly as received without distortion.
If not the filtering of the baseband, what are you looking for? The splatter received at the antenna will always remain in exact relationship with the wanted signal leaving the brick wall bandwidth filter of the signal, tunable notch filter(s) of undesirable "Frequencies" within that passband, and noise filtering which may ADD AGC interaction with in-band signals by out-of-band "noise".
What there isn't, and I expect a long ways off "Science Project", is a mathematical removal of phase related content from an undesired signal that originates in-band or out-of-band. This touches on the full diversity noise reduction algorithms but certainly not a "Tunable IF Filter".
Please help this old logical brain get back in phase with the desired result.
Stan Williams VA7NF
changing the receive frequency!!! And, someone was nice enough to create some splatter below the group I was listening to and just moving the filter a tiny bit, got rid of them!!
Again, I really do appreciate everyone's comments and help.
Looking forward to the next release of SmartSDR!!!