FT1000D with IF over RTL-SDR
Posted: Thu Jun 23, 2022 5:00 am
Hello everyone,
I am having difficult time configuring all the offsets and tuning the RTL-SDR receiver to work with a FT-1000D with it's IF output (73.620MHz).
I have control established of the transceiver to sdr console, I find the scrolling acting strange while tuning the VFO on the radio, choppy (probably because of the 4800bps CAT speed of this old radio) waterfall but the waterfall also seems to stutters and redraw really strangely when the radio VFO is moved.
The best way I could make that work really smoothly is when I deactivate frequency control then the cursor stays in center of the waterfall and the scrolling is much better but then, the radio never sync properly with the frequency when I click on a waterfall signal. Sometime even with frequency control unchecked, it is still updating frequency changes for an unknown reason.
I have tough time figuring out the offset of LSB and USB as I am always at the limit 9999 offset and I am still far from the center of WWV for example. Anyone using a FT1000 care to share their settings in radio controls ?
There is another strange thing too that I cannot figure out, when the VFO on the radio is moved, the waterfall resize and get centered but as soon I zoom in closer, the frequency shift of a couple 100s Hz. If I retune the offset or main RTL oscillator to the zoom, when I touch the VFO on the radio, the waterfall is now offsetted when in recentered mode.
I've tried to reset oscillator adjustments to 0 PPM, unticked frequency control (as I suspected the radio was making the display shift when I zoom) and lastly add or remove offsets and there is always a frequency shift when I use the zoom scrolling bar.
Any suggestions ???
Thank you
I am having difficult time configuring all the offsets and tuning the RTL-SDR receiver to work with a FT-1000D with it's IF output (73.620MHz).
I have control established of the transceiver to sdr console, I find the scrolling acting strange while tuning the VFO on the radio, choppy (probably because of the 4800bps CAT speed of this old radio) waterfall but the waterfall also seems to stutters and redraw really strangely when the radio VFO is moved.
The best way I could make that work really smoothly is when I deactivate frequency control then the cursor stays in center of the waterfall and the scrolling is much better but then, the radio never sync properly with the frequency when I click on a waterfall signal. Sometime even with frequency control unchecked, it is still updating frequency changes for an unknown reason.
I have tough time figuring out the offset of LSB and USB as I am always at the limit 9999 offset and I am still far from the center of WWV for example. Anyone using a FT1000 care to share their settings in radio controls ?
There is another strange thing too that I cannot figure out, when the VFO on the radio is moved, the waterfall resize and get centered but as soon I zoom in closer, the frequency shift of a couple 100s Hz. If I retune the offset or main RTL oscillator to the zoom, when I touch the VFO on the radio, the waterfall is now offsetted when in recentered mode.
I've tried to reset oscillator adjustments to 0 PPM, unticked frequency control (as I suspected the radio was making the display shift when I zoom) and lastly add or remove offsets and there is always a frequency shift when I use the zoom scrolling bar.
Any suggestions ???
Thank you