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Re: tuning below & above the center frequency
Hi,
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It is difficult to say in absolute terms but If you receive an USB station, for example Hams in 20 M band, and you get it right this is the good configuration for your radio. If you receive it inverted (and the spectrum is also inverted) you must swap the cables. Anyway most SDR software has provisions to invert this so you don't need to exchange the connections. Regards, Ignacio EB4APL El 30/01/2022 a las 17:25, al2ok escribió:
It is FIXED !!! --
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Re: tuning below & above the center frequency
It is FIXED !!!
Turns out what EB4APL (and a afew others said) said about missing either an I or Q signal was correct . . . it was not the plug going into the Ensemble nor the Ensemble's jack. Like I said I use that SEWELL box to go from "regular audio cable " to USB into my PC. Well one of those plugs was bad going into the SEWELL, ( the SEWELL accepts R & L Individually so I had to make a "Y" from the Ensemble ) replaced that bad plug and it works now, no more mirroring image above the LO, instead it is tuning above & below the LO perfect, tuning all frequencies. By the way. . . in old terms . . . you got left & right channel, what channel is the I on and what channel is the Q on ? I believe you can make this anyway you want but normally what channels is I & Q on ??? again Thanks to all. Al |
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Re: tuning below & above the center frequency
Al I have had a similar issue in the past and found that I had simply not pushed the jack into the socket far enough.
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Sometimes the last mm or so needs an extra hard push to get it in. Apologies if this seems an odd comment but if it is the cause it would be simpler than a new jack! Regards John G0UCP ------ Original Message ------
From: "al2ok" <al2@...> To: [email protected] Sent: Saturday, 29 Jan, 22 At 16:57 Subject: Re: [softrock40] tuning below & above the center frequency EB4APL, Thank You, with what you explained I think I found the problem ! The right channel ( I or Q ) is not getting out of the Ensemble to the SEWELL audio box. It looks like the stereo plug I am using for whatever reason is not making contact to receive the channel from the jack on the Ensemble. The right channel is the "ring" on the plug. Checked it for continuity with a DVM and it proves it is not getting out of the Ensemble. It seems it is the STEREO plug I am using, it fits OK into Ensemble jack but for whatever reason the " ring" is not making contact with the Ensembles jack connector, only on the R channel ,the L( tip ) is OK.. Looks like it is happening on one particular plug I used to make up a cable that comes out of Ensemble, because I used the other end of that plug to go into the SEWELL for the R and it too looks like is not making contact on that end too. Again LEFT is OK. Never saw this before, I have to get new STEREO plugs and try them. Any thoughts on type I should get? Al |
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Re: tuning below & above the center frequency
EB4APL,
Thank You, with what you explained I think I found the problem ! The right channel ( I or Q ) is not getting out of the Ensemble to the SEWELL audio box. It looks like the stereo plug I am using for whatever reason is not making contact to receive the channel from the jack on the Ensemble. The right channel is the "ring" on the plug. Checked it for continuity with a DVM and it proves it is not getting out of the Ensemble. It seems it is the STEREO plug I am using, it fits OK into Ensemble jack but for whatever reason the " ring" is not making contact with the Ensembles jack connector, only on the R channel ,the L( tip ) is OK.. Looks like it is happening on one particular plug I used to make up a cable that comes out of Ensemble, because I used the other end of that plug to go into the SEWELL for the R and it too looks like is not making contact on that end too. Again LEFT is OK. Never saw this before, I have to get new STEREO plugs and try them. Any thoughts on type I should get? Al |
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Re: tuning below & above the center frequency
Hi,
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If you have a mirror copy of the spectrum above the LO this always is caused by a big unbalance of the IQ signals. The imbalance can be caused by: - The RX is not generating either I or Q signal. You can check this using a strong CW signal and a dual channel oscilloscope to see that the amplitudes are the same and the phase is in quadrature. - The audio cable has one of the channels missing or have a short between them so I and Q are the same. - The audio input is not stereo. This happens in most laptops. -The audio input card or USB audio device has a problem. There was a ADC chip that sampled the channels alternatively so the samples were displaced in time. Most SDR software does not correct this. There was one that did it, but I don't remember which one. Since the current audio input device could be the culprit, try with another audio system, for example an USB card. Beware that most audio input dongles are mono. Regards, Ignacio EB4APL El 28/01/2022 a las 23:53, al2ok escribió:
The RX is working again, it is back to OK. Except for the odd things I been trying to correct. --
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Re: tuning below & above the center frequency
The RX is working again, it is back to OK. Except for the odd things I been trying to correct.
I still have the spectrum from LO frequency to left working correctly and what is on the right in spectrum of LO is a duplicate ( signal wise ) of what is on the left of LO, even though frequencies that display on RIGHT of LO in spectrum display are higher then left frequencies displayed in spectrum. Somebody mentioned a short on the I & Q signals, if there was a short would it not work at all, if I & Q were shorted together? But I did check and there are no shorts. As mentioned before it does these things on, Winrad & HDSDR . . . Rocky 3.8 works to but that has additional display issues, like I can't get all the frequencies the Rocky 3.8 setting claims to cover. Rocky 3.8 seems to be missing some frequencies. But again - it works, sounds good and tuned frequency is the correct frequency on all 3 softwares. Al |
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Re: tuning below & above the center frequency
I am thinking more & more that the SEWELL box I have is part of my problem. Al, Is this it ? Now I can't get anything out of the Ensemble, the I & Q from the Ensemble RX goes thru the SEWELL box as STEREO IN ( L & R ) and the SEWELL OUTPUTS via the USB to the PC> Like I said now I just get noise, like the I & Q signals are not there. It should work if you have the connections and settings correct. Just about any stereo USB sound device should work. What OS? Microphone privacy settings stop sound working on later systems if not set correctly. 73 Alan G4ZFQ |
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Re: tuning below & above the center frequency
I have used quisk on my linux boxes with NotSDR receivers and use just one side of the display.? Works great. I now have a stereo input (in addition to the regular stereo out) USB sound card. Those old receivers still don't have I-Q output for the sound card but the half that does work is still useful. When I build my softrock that stereo input will be twice as useful:)
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73, Bill KU8H bark less - wag more On 1/27/22 2:28 PM, Alan G4ZFQ wrote:
If I put RX in USB mode on these signals above the center I can hear them . . . they are the same signals below the center that comes in LSB, like they should be.Al, |
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Re: tuning below & above the center frequency
If I put RX in USB mode on these signals above the center I can hear them . . . they are the same signals below the center that comes in LSB, like they should be.Al, You are feeding HDSDR with a mono signal. Is the soundcard stereo? Has the Ensemble an output on both channels? If so are they shorted together? Is HDSDR set for IQ input? 73 Alan G4ZFQ |
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tuning below & above the center frequency
On my Ensemble RX LSB signals (on 40 meters, for example) tune below (in LSB mode) the "center frequency", they tune perfect, but above that center frequency while it says it is higher frequencies above the center frequency, What I see signal wise above the center frequency are duplicates of signals that are below the center freq. If I put RX in USB mode on these signals above the center I can hear them . . . they are the same signals below the center that comes in LSB, like they should be.
The frequency readout above the spectrum display shows from about 7.235 - 7284, but I am not tuning up to 7.284, again, instead just what I see & hear below the center frequency is above the center frequency too, but in USB mode. Is this right ? What am I missing or not understanding here ? I am using Winrad v1.33 or sometimes HDSDR v2.8 software, what I see, occurs on both. My center is set to 7.260. Al |
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Re: getting software for older RX Ensemble
the audio is muffled & distorted on SSB signals.Al, I cannot think of anything in those settings to produce bad SSB sound. My first thought is that you have configured HDSDR wrongly, maybe too narrow bandwidth. I'd suggest setting HDSDR back to "factory settings" and check without changing anything to do with signal processing. If it is still bad then suspect the Sewell, does it work with normal audio inputs? 73 Alan G4ZFQ |
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Re: getting software for older RX Ensemble
George Blake
I have the Soft Rock Lite II and run the I/Q output into LINE IN at the
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back of my PC. Works fine with HDSDR. I loaded ASIO into my PC to work with HDSDR. Do you have your Audio In set to LINE IN? On Tue, Jan 4, 2022, 12:09 PM al2ok <al2@...> wrote:
Well, it kind of worked, using the LINE IN jack on the RX Ensemble, like I |
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Re: getting software for older RX Ensemble
Well, it kind of worked, using the LINE IN jack on the RX Ensemble, like I should have been, going into the STEREO IN on the Sewall box, which then outputs via a USB cable to my PC . . . but it doesn't work well . . . the audio is muffled & distorted on SSB signals.
Either it's the SDR or I don't have WINDOWS 10 audio settings correct, I never tried to feed I & Q signals into my PC via the USB, let along going thru this SEWELL box to do so . . .I have other things using audio via USB and they all work OK as well as a second SDR I have that looks like it does its I & Q handling inside its box ( I think ) and it works good on my PC via the USB cable. Al |
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Re: getting software for older RX Ensemble
Hey all !!!
I asked Tony a question about something I was not sure of, that "jack" called LINE IN on the RX Ensemble, see "old Al " thought he had this SDR hooked up correctly but no he did not. When I used this SDR prior to 2018 I had an older PC that had a "real STEREO IN" jack, that I remembered using after Tony told me earlier today . . . it is used ! I was not using it ! See my new PC only takes audio in via its USB ports . . . I use a box made by SEWELL to get mono (speaker) audio from my ham rig into the new PC using this SEWELL box, which outputs via a USB PORT OUT for my PC USB in. So I got to make up an "old fashion" cable that takes STEREO OUT ( of the LINE IN RX Ensemble jack ) and I will have to split it into a LEFT & RIGHT channel into the SEWELL box, since it handles STEREO IN on two jacks a L & R. Then I think this SDR will work. Al I |
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Re: getting software for older RX Ensemble
Good Afternoon Al,
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I have Rocky set up on my PC for checking operation of RX II and RXTX units that I have built. I would be happy to make sure your RX II board is playing properly if you would send it to me. Cost would only be the return postage expense. Regards, Tony, kb9yig On Jan 1, 2022, at 11:25 AM, al2ok <al2@...> wrote: |
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Re: getting software for older RX Ensemble
Well . . . I removed the 570 software and the driver called PE0FKO-USB-Driver and reloaded both, it looks like this has been OK . . . all along. I wanted to remove both to see what happens with the 570 driver that shows in the Device Manager.
It looks like the PE0FKO-USB-Driver is in that same driver that shows in my Device Manager or part of it after you load both the 570 and PE0FKO-USB-Driver. So it seems both things are under that one. If somebody thinks this is wrong . . . speak up ! I can control the 570, I can connect / disconnet it ,etc. via my PC but I can't get anything from the RX Ensemble in the way of signals, nor control it via PC. So . . . I guess the problem might be my "good old RX Ensemble " . . . I'll have to bring it to the bench ( the kitchen table ) and do some test on it someday. again Thanks to all for the help. I'll play with it on / off , if I get it going . . . I'll let ya know ! Al |
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Re: getting software for older RX Ensemble
On 31/12/2021 15:43, al2ok wrote:
Again Thank You all,Al, About all I can tell you is here Don't expect things to always be simple, sometimes a fair bit of experimenting is needed. 73 Alan G4ZFQ |
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Re: getting software for older RX Ensemble
Al,
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I have the following: Installer for the pe0fko-usb- driver 1.2.6.0 Cfgsr v2.6.0 zip PowerSDR-for homemade rigs-v2.4.4.zip I also have an older version of the usb-driver. Let me know off-group if you need any/all of these. Also have several pdfs of user guides. Milt w8nue at austin dot rr dot com On Dec 31, 2021, at 5:45 PM, al2ok <al2@...> wrote: |
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