SDRUno recording settings?
SDRUno recording settings?
Hi all
I'm trying to record some CW but can't seem to get the settings right.
I've set the recording directory, and the LO and VFO freqs are identical. I tune to a good strong signal, get the noise to an acceptable level, then press record. When I listen back to the file it seems that SDRuno hasn't recorded the output that I heard. What am I missing?
Thanks, Steve
I'm trying to record some CW but can't seem to get the settings right.
I've set the recording directory, and the LO and VFO freqs are identical. I tune to a good strong signal, get the noise to an acceptable level, then press record. When I listen back to the file it seems that SDRuno hasn't recorded the output that I heard. What am I missing?
Thanks, Steve
Last edited by sjk1000 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason
Re: SDRUno recording settings?
Hi Steve.
I can't answer your recording question, but the LO and the 'tuned' frequency should not be the same as this will put the received signal right on top of the local oscillator, which causes noise and distortion especially on weak signals. The received sig should always be off to one side of the centre.
I can't answer your recording question, but the LO and the 'tuned' frequency should not be the same as this will put the received signal right on top of the local oscillator, which causes noise and distortion especially on weak signals. The received sig should always be off to one side of the centre.
Reason: No reason
Andy
Re: SDRUno recording settings?
If your signal of interest is 7012kHz and you are using a 2MHz bandwidth you could place the LO at say 6500kHz, well out of the way, although I guess if the LO were placed at 7000kHz you'd get the same result. Just put the LO a few kHz away from your SOI and you should be good. This applies to all tuning, whether decoding CW or listening to SSB/AM.
Standard Operating Procedure (SOP).
Standard Operating Procedure (SOP).
Reason: No reason
Cheers,
Michael (Palmerston North, New Zealand)
HF Aeronautical Specialist
RSP2 / Custom Dipole for HF / Wideband VHF/UHF Antenna
Michael (Palmerston North, New Zealand)
HF Aeronautical Specialist
RSP2 / Custom Dipole for HF / Wideband VHF/UHF Antenna
Re: SDRUno recording settings?
As long you're in Low IF mode, LO frequency=tuner frequency should not matter. Where (what program) are you trying to play the recorded file? Unfortunately SDRuno doesn't record audio files (yet), only I/Q files so you can only play them back in SDRuno (and possibly other SDR software).
Reason: No reason
Re: SDRUno recording settings?
Thanks for the replies
Ah, I need to go back to my ham intermediate training to appreciate the LO/VFO. Thanks for that.
Ah, again, I assumed the recording panel was for recording the very narrow audio output that I could hear. Am I right in saying that I/Q recording takes a much larger sample of the bandwidth? That's a bit exciting if that's the case.
And finally, if I just wanted to record the output from the soundcard I assume audacity does that job, or is there something lighter?
Steve
Ah, I need to go back to my ham intermediate training to appreciate the LO/VFO. Thanks for that.
Ah, again, I assumed the recording panel was for recording the very narrow audio output that I could hear. Am I right in saying that I/Q recording takes a much larger sample of the bandwidth? That's a bit exciting if that's the case.
And finally, if I just wanted to record the output from the soundcard I assume audacity does that job, or is there something lighter?
Steve
Last edited by sjk1000 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason
Reason: No reason
Re: SDRUno recording settings?
How does one set the recording file location? Ive been looking for this.
W9KJO
W9KJO
Reason: No reason
Re: SDRUno recording settings?
I had some fun with recording last night. You can start a recording by simply pressing * on the keyboard (when Uno has the focus). There's no indication that recording has started (unless I missed it), but you'll be getting large files in your 'My Documents' folder, unless you've changed where they are to go.
You can change where they go by right clicking in the Record panel and you play them in the software with 'Select Input' - 'WAV File' (which opens a file browser) from the 'Opt' dialog on the 'Main' window.
Files get big quickly if you're using 10Mb sample rate.
You can change where they go by right clicking in the Record panel and you play them in the software with 'Select Input' - 'WAV File' (which opens a file browser) from the 'Opt' dialog on the 'Main' window.
Files get big quickly if you're using 10Mb sample rate.
Reason: No reason
Re: SDRUno recording settings?
In the recording panel how do you select a file for playback and then play it? When I hit the play button it does not give me any indication to select a file to play back.
W9KJO
W9KJO
Reason: No reason
Re: SDRUno recording settings?
I don't think you can select one there. It has to be done with 'Select Input' - 'WAV File' (as above).
It's a great feature and I read somewhere that file sizes will be able to exceed the current 4GB 'WAV' limit in a future update.
It's a great feature and I read somewhere that file sizes will be able to exceed the current 4GB 'WAV' limit in a future update.
Reason: No reason
Re: SDRUno recording settings?
When I make a recording, and perhaps then make another recording, how do I select a file to play back? or how do I play back any file?
I may have missed this before or maybe did not realize what I was reading. Please help this sometimes slow ham. LOL
W9KJO 73
I may have missed this before or maybe did not realize what I was reading. Please help this sometimes slow ham. LOL
W9KJO 73
Reason: No reason