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Re: Softrock Ensemble II and Raspberry Pi
Many thanks for your replies and interest.
Yes it configures correctly on windows, and I can not get any software to make it work properly. W 10 does not work at all, and windows 7 on laptop is the one I want to use, it worked before on there. Not willing to upgrade the laptop to W10 as it holds all my old amateur radio programs. The double hump on the spectrum display is there even without aerial connected. I will look into all this tomorrow and run down all the options in the link from Alan, when I have more time and post my results. |
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Re: have not been able to get the LF Ensemble RX II working correctly in HDSDR
I've been trying to use both the LF and HF Ensemble II's, not simutaneously but one at a time, but I have never been able to get the LF version to tune correctly. I wonder if the LF maybe uses a different peofko USB driver that the apparent universal one that is installed with the above instructions?Jon, Did you set the LF version with CFGSR? Setting the "Init" tab to LF should work. Ensure that this sets the two top LO multipliers to 16 on the "LO" tab. Not it is possiblr to run them simultaneously if you want. Alter the ATTiny serial number. No, the driver is the same. 73 Alan G4ZFQ |
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Re: please help me with Softrock Ensemble RX II interference source
Thank, Roger.? Well, I did a lot of moving things around and unplugging items.? It is used with a desktop, so the only way of going off the grid is with the UPS I use for it when the power goes out.? I do have a separate lithium ion 12V battery I could use with the Softrock.? I may try this later just to see what happnes.
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I was fortunate to find a couple of more snap on RFI ferrite cores.? After placing them over every cable relating to the SDR, it appears that the broadband 30 Khz noise was greatly reduced. Not totally gone, but a lot better than it was.? I still have to be careful where I place my keyboard when not using it because I get a lot of interference if anywhere close to any of the Softrock cables.? And I have cores around the keyboard wires too. On 5/20/21 5:12 PM, Roger wrote:
Jon, |
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Re: please help me with Softrock Ensemble RX II interference source
Jon,
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Since it does not change when an antenna is removed that does suggest the noise is coming in over one of the connections. Can you run everything on battery and disconnected from the outside world? That is, run the Softrock from a 12V battery and use a laptop running on battery? Even a transformer based power supply will allow coupling of RF that can be difficult to filter out. The noise still could be coming over the air (not thru a wire). Can you make it better/worse by moving the Softrock around, putting your hand around the case, touching the ferrite transformers on the board? Things could be radiating RF through the AC lines, or ethernet cables, or broadband coax cables. WIFI routers and cable modems can cause RF havoc. Unplugging your cable/wifi system would be a simple test for that. And turn off the wifi on the computer you are using to run the Softrock. 73, Roger On May 20, 2021, at 12:15 PM, JonI via groups.io <ji425bt@...> wrote: |
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Re: Softrock Ensemble II and Raspberry Pi
Time for me to open my mouth and insert foot.
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Before tackling a raspberry pi, which should be simple, for me anyway, find out why it does not work on WIndoze.? I just plugged mine into win10 for the first time in well over a year and it does show up as a "libusb-win32 devices" as a softrock bla bla bla in device manager. <lecture on>.? Upgrade windows 7 to 10.? It is still free.? If you wish to not go that route then open Device Manager on your win7 box and plug in/out your usb for soft rock.? Does it show up?? <\lecture off> <lecture me on>? No I have not plugged mine into a rpi yet.? Been busy with rpitx, hackrf and gnuradio on rpi.? Just upgrade to General so that will happen soon.? <\lecture me off? Bring on the whips fellow softrockers.? :( On Thursday, May 20, 2021, 12:21:07 PM EDT, Bob G4IOG <jrblackett@...> wrote:
Has anyone managed to get the Softrock Ensemble II to work on a Raspberry Pi ? If so, please can you guide me to which software to use and how to set it up. Mine used to work on Windows 7, but I can no longer get it to work properly. There is always a double hump of some big noise in the centre of any? spectrum display too. I can no longer get any software to tune a software receiver, like GQRX or Quisk. I would love to get this working again and on a R Pi. ANy help appreciated. |
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Re: please help me with Softrock Ensemble RX II interference source
I mentioned this in the video- does not go away.? Thanks.
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On 5/20/21 3:01 PM, Nick wrote:
What happens if you disconnect the antenna? |
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Re: please help me with Softrock Ensemble RX II interference source
What happens if you disconnect the antenna?
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Do you still see the noise? On 20/05/2021 15:32, JonI via groups.io wrote:
I made a short 3 min video describing and showing this interference: |
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Re: Softrock Ensemble II and Raspberry Pi
Bob
Has anyone managed to get the Softrock Ensemble II to work on a Raspberry Pi ?No but There is always a double hump of some big noise in the centre of any spectrum display too.Which could well be due to ground loops, might be present on any platform. /g/softrock40/message/82427 Your YouTube QRM, no idea but I see similar and assume it is from some noisy electronic device. It's not often in my way and when it is not strong. 73 Alan G4ZFQ |
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Softrock Ensemble II and Raspberry Pi
Has anyone managed to get the Softrock Ensemble II to work on a Raspberry Pi ?
If so, please can you guide me to which software to use and how to set it up. Mine used to work on Windows 7, but I can no longer get it to work properly. There is always a double hump of some big noise in the centre of any spectrum display too. I can no longer get any software to tune a software receiver, like GQRX or Quisk. I would love to get this working again and on a R Pi. ANy help appreciated. |
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W6SFM Bug Roundup Event is coming soon! Save the Date
Announcing W6SFM's BUG ROUNDUP
The Samuel F. Morse Amateur Radio Club, a Sacramento, California based CW enthusiast club wanted a special time to bring bug operators together on the air. In the same spirit as ARRL's Straight Key Night, participants are encouraged to make simple, conversational, “chewing-the-fat” QSOs using their bug type key. This is an opportunity to exercise, share and exhibit your personalized fist. This is NOT a contest. However, there is a very easy and quick registration form found at . Once you've optionally registered for the event simply Call "CQ BR" so folks know you are a Bug Roundup Participant. So lets grab that bug, clean those contacts, and let’er fly! We want to hear that “Banana Boat / Lake Erie Swing" or that commercial KPH/WCC quality fist. Reserve the date! The event begins on Friday May 21st (local) ( May 22nd 00:00 UTC) and concludes Sunday May 23rd (00:00 UTC) That's 5:00 PM Friday evening until Sunday 5 PM Pacific Time (LOCAL) For more information, to register your station, and to help assist in spotting, potentially increasing QSOs, an On-line chat window link can be found near the bottom of Bug Roundup home page located at We hope to hear you all on the air! 73, W6SFM |
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FM Modulation Index = 1.67
Hello everybody,
I noticed that the default value for FM modulation index in Quisk is set equal to 1.67. I use Quisk with a Softrock RXTX. Is it a correct value? I assume that 1.67 comes from 5/3, where 5 is the frequency deviation of the transmitter and 3Khz is desired modulated bandwidth. Am I correct? Does the Softrock really has a 5Khz deviation? Would it be better to change the 1.67 value (I was thinking to set it equal to 1) to have a clearer modulation? As for my understanding lowering the modulation index setting to 1 would increase the modulated bandwidth up to 5Khz (instead of 3Khz). 73 Franco iz2oos |
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Re: SoftRock RXTX Ensemble XCVR general questions
"In a direct conversion system, the only intermod products are between the modulating audio and the carrier"
This is only true if the system uses linear mixers and sine wave LO's. The massive harmonic content created by using square wave LO's and analog switched requires filtering before amplification. If the 3rd harmonic of the output of the mixer isn't at least 15-20dB down prior to amplification the intermodulation products will be significant. Even with proper filtering the LO feedthru and image products are smaller than the intermodulation products, as seen in these SA plot: |
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Re: SoftRock RXTX Ensemble XCVR general questions
Jim:
In a direct conversion system, the only intermod products are between the modulating audio and the carrier. Interstage transformers cannot filter that out. For a push pull output stage, the strongest harmonic is the 3rd harmonic, which as a rule of thumb is -10dB or more from the carrier frequency. As long as the LPF is designed to suppress the 3rd harmonic by at least 33 dB the system is usually withing spec. A 5 pole Chebychev 1% ripple is more then adequate. Of course you need to validate the performance with a spectrum analyzer. The ASUS is certainly a better USB adapter fir the application then the one I mentioned, but it costs 3x as much, more then the RXTX is you buy it new. Howard |
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Re: Softrock ensemble kit I Europe?
Hello colleague Niels,
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It was good for you to touch on this subject, I have two kits purchased from Tony Parks to assemble kit softrock ensemble, do you know anything about this equipment? fraternal 73's. <> PY2PVB Rubens GG49in07 -- Rubens Kamimura Técnico em Eletr?nica e Eletrotécnica - Aposentado CFT/CRT-SP: 80254934820 Cel. +55 (18) 9-9819-2225 WhatsApp Em dom., 14 de mar. de 2021 às 11:25, Alan G4ZFQ <alan4alan@...> escreveu: How do I aquirre a softrock ensemble kit when I'm located in Europe ?Niels, |
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