Date   

Re: Issue with "Ghost Audio" when using with RSP2 #rspduo

Mikael Dagman
 

Any link for the last "working" 3.17?


Re: Issue with "Ghost Audio" when using with RSP2 #rspduo

bigtalk1233@...
 

The utilization on my machine is about 4%, and I have never had any noise issue when using much more demanding apps. If I use any other SDR software, this issue does not occur. Otherwise, it's just a Win10 system with Ryzen 5 and a somewhat embarrassing to admit Geforce 750 Ti video card. I have other systems, some Intel powered by CPU graphics, that also have this issue with Console, so thats why I don't think it is hardware related. Any time that spectrum is filled with an S6 or S7 noise floor, or just some really big AM signals, this problem seems to occur.
If you have some big stations you can tune in, try deleting or muting all receivers, and turning the windows volume to max. I'm sure you'll hear it.


Re: Driver for DragonFly SDR RX-666

Bjarne Mjelde
 

I got one today. Been testing it. It does sample 32 MHz from 0 to 32 MHz, and does that quite well, CPU-wise as long as not recording. For VHF/UHF it uses the R820T2, so 8-10 MHz max. On mine they apparently missed a solder joint, so mine's deaf above 32. Shabby user interface (extIO) with "HDSDR". Selectable 32, 16, 8, 4 and 2 MHz. No LNA so not very sensitive. Worst yet, in my eyes, is that it does not work with HDSDR. They (who are they? Which company makes it? All we have are resellers) apparently didn't get it to work with HDSDR, so they just cracked it. It will play nothing else than the RX666 (possibly the RX888). I will not call them pirates (yet), their intentions may be good. They would have come so much further if they had bothered to involve the designer of the SDR. Save your cash. 
--
Bjarne Mjelde
arcticdx.blogspot.com
Remote receivers: 
arcticsdr.ddns.net:8073/
kongsdr.ddns.net:8074


Re: Issue with "Ghost Audio" when using with RSP2 #rspduo

jdow
 

I am still inclined to figure this is coupling through the power supply busses in your computer. SDRC can demand a lot of power out of a machine that varies with how much screen is being painted.

Something does come to mind - is your audio perhaps coming from your nVidia video card audio? Perhaps a brief description of your system and audio output selection might help.

{^_^}

On 20200807 13:22:24, bigtalk1233@... wrote:
Actually, I was able to reproduce this problem with the HackRF, with the noise floor at S7 (had to really crank up the amplifiers). So its not RSP specific after all, but the same settings in a different program do not produce the noise.


Re: Broken up audio sometimes with Bluetooth headset

jdow
 

What happens when you watch a video?

{^_^}

On 20200807 13:32:04, Simon wrote:
It is nothing wireless on my pc..just running headset..( all other Bluetooth/ wireless dongles removed..) same issue..

crap headset??


Re: Broken up audio sometimes with Bluetooth headset

jdow
 

If  you are using WiFi N then you are using all channels and there will be interference.

{o.o}

On 20200807 13:16:36, Simon wrote:

To check removed wireless mouse..and dongle.same as

vox is off..

same channel interference..could be..how to  check??

also does same with sdrc off but just listening to mic in via windows..though not as much..

so IT is not sdrc causing this..

i see a tin of worms looming up!!!

maybe same channel as wifi from pc?? How to check?? (,apart from removing wifi?)

really do not want to go wired headset again..but....

thank you..



Re: Broken up audio sometimes with Bluetooth headset

Mag loop Simon
 

It is nothing wireless on my pc..just running headset..( all other Bluetooth/ wireless dongles removed..) same issue..

crap headset??


Re: Issue with "Ghost Audio" when using with RSP2 #rspduo

bigtalk1233@...
 

Actually, I was able to reproduce this problem with the HackRF, with the noise floor at S7 (had to really crank up the amplifiers). So its not RSP specific after all, but the same settings in a different program do not produce the noise.


Re: Broken up audio sometimes with Bluetooth headset

Mag loop Simon
 

To check removed wireless mouse..and dongle.same as

vox is off..

same channel interference..could be..how to  check??

also does same with sdrc off but just listening to mic in via windows..though not as much..

so IT is not sdrc causing this..

i see a tin of worms looming up!!!

maybe same channel as wifi from pc?? How to check?? (,apart from removing wifi?)

really do not want to go wired headset again..but....

thank you..


Re: Issue with "Ghost Audio" when using with RSP2 #rspduo

bigtalk1233@...
 

Yes, I can go to Windows mixer, and if I mute or turn down Console the audio goes away. So it is definitely being synthesized by Console and piped to the default audio device, irregardless of how the receivers are setup or if there any.

This only happens with the RSP2 and Console. If I switch to a different client program, the problem doesn't occur. If I switch to a different SDR, the problem doesn't occur. I tried it on a few machines, including laptops not connected to power or anything else, and it happens the same each time with this combination, so I don't think it is a ground loop or anything electrical. I'm also fairly certain this didn't happen prior to version .18 but I can't find my copy of .17.


Re: SDRC Issue below 2 or so MHz

jdow
 

Check your automute setting. The input levels got to high and it's triggering. Set it higher or turn it off.
{^_^}

On 20200807 08:57:16, George Stein - NJ3H via groups.io wrote:
Greetings,
Something very odd this morning.

When using SDRC with the Perseus or Elad S2, there is no signal (spectrum and waterfall below about 2 mhz.  Both radios work fine with their native software.

You can see what happens in the video as I tune below 2 megs.

Any thoughts for what is happening.  I have rebooted and tried what I think are the normal type solutions.

Regards,
George

Attachments:



Re: Broken up audio sometimes with Bluetooth headset

Robin Thompson
 

Maybe on the same channel as a Bluetooth mouse? Or another BT device ?
Just a thought 

Robin
G3TKF 

Sent from my Phone


On 7 Aug 2020, at 19:59, Simon <ohhellnotagain@...> wrote:

Hi

not sure where to post this, so starting here if you do not mind..

trying to go wireless headset..bought one on ebay cheapo. ( Bluetooth.)

Bluetooth dongle in usb socket..gaming pc..quick..lots of ram etc..sdrc v3.24 win 10.

every now  and again on initialisation of tx, i lose some audio..its as though losing 50% of audio but in packets..say 50ms??tx  Audio good. audio gone. audio good. etc but at a very fast rate..
then it just clears itself and all is good, then it may come back..( espically if i change on sdrc from normal audio to dx or visa versa while still in tx.OR de key and re key..)

rx audio though headset is always good..

anyone got an idea of what is going on?? ( as I do not.) Is it just should have bought more expensive wireless headset??

thank you all for reading   Mag loop Simon.


Re: RSP1DX

jdow
 

What are you using for an antenna? Through 30 MHz it takes a really terrible receiver to have more noise than the natural noise level picked up by moderately good antennas.
{O.O}

On 20200807 03:33:56, Hasan Schiers N0AN wrote:
Hi George,
I have an Airspy S2 and an SDRPay RSPdx and they both play well with SDRC.

Performance wise there are clear differences and I find the RSPdx a bit deaf compared to the S2, especially on 6 meters.

When I compare the raw number of decodes on FT8 per 15 sec sequence, or the same decodes per seq using MSK144, the S2 is quite a bit more sensitive. I am driving the SDRs from my Kenwood TS-590sg antenna output port, which loses 3 dB of signal, but that has not proven to be a factor.

If you look at the specs of the RSPdx, it has a very high noise figure on HF especially. I found at my rural qth, a wideband preamp made a big difference. With the preamp, the performance of the RSPdx is equal to or better than my TS-590sg on all HF bands.
Again, the measure in number of decodes/sequence on FT8. I pay little or no attention to the raw SNRs, as they can be quite misleading due to AGC characteristics.

The preamp has caused no overload issues of any kind. I don't use the RSPdx for BC band reception as a rule, but I have no overload or intermod issues from either FM or BC stations to my work on ham radio bands, and very good antennas.

For normal HF work, the RSPdx is quite good, clearly better than the FunCube Pro+ on HF (the FC+ is excellent on satellite work with an appropriate GASfet preamp)

On 6 meters, even with the preamp, the RSPdx is not in the same league as the Airspy S2.

So, if your interests are HF, the RSPdx is fine. If VHF, not so much.
73, N0AN

Hasan


On Thu, Aug 6, 2020 at 4:42 AM George Stein - NJ3H via groups.io <nj3h=yahoo.com@groups.io> wrote:
Greetings,

How well does the subject receiver work with SDRC?  Are there any major issues or concerns?

Thanks for any comments.

Regards,
George, NJ3H


Re: RSP1DX

jdow
 

Give the whole frequency range you want to cover. 108 MHz to high energy X-Rays is a little much to ask for. AirSpy HF+ models go to 260 MHz. AirSpy R2 makes it to about 1750 MHz. Lime USB (not the mini, please) makes it to around 6 GHz. After that you are talknig about serious money.

{^_^}

On 20200807 02:34:59, David J Taylor via groups.io wrote:
I would like to thank everyone for their comments and insights.  I should have mentioned that I am looking for receiving signals above 108 MHz.  I currently have a Perseus and an Elad, so I think I am ok below that frequency.  So I am looking for something with continuous tune above 108 Megs.

So what would the experts out there recommend as a good SDR receiver for 108 and up (in frequency)?

Of course I want it to be "very" compatible with SDRC, of course.

Thank you for any suggestions.

Regards,
George, NJ3H
Redmond, Oregon USA
===============================================

From 60 to 260 MHz the Airspy HF+ Discovery is pretty good:

 https://airspy.com/airspy-hf-discovery/

73,
David GM8ARV


Re: Broken up audio sometimes with Bluetooth headset

Tom Crosbie G6PZZ
 

VOX on TCVR?

 

73 Tom G6PZZ

Nr Chesterfield | NE Derbyshire | UK | IO93he

HF250 | Sentinel 4 | RSPdx | RM50 | TR2 | ATS 808

15m MLB | MTA | D707

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon
Sent: 07 August 2020 19:32
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Broken up audio sometimes with Bluetooth headset

 

Hi

not sure where to post this, so starting here if you do not mind..

trying to go wireless headset..bought one on ebay cheapo. ( Bluetooth.)

Bluetooth dongle in usb socket..gaming pc..quick..lots of ram etc..sdrc v3.24 win 10.

every now  and again on initialisation of tx, i lose some audio..its as though losing 50% of audio but in packets..say 50ms??tx  Audio good. audio gone. audio good. etc but at a very fast rate..
then it just clears itself and all is good, then it may come back..( espically if i change on sdrc from normal audio to dx or visa versa while still in tx.OR de key and re key..)

rx audio though headset is always good..

anyone got an idea of what is going on?? ( as I do not.) Is it just should have bought more expensive wireless headset??

thank you all for reading   Mag loop Simon.


Re: Issue with "Ghost Audio" when using with RSP2 #rspduo

jdow
 

OK, I think you just proved it is not SDRConsole providing that audio. You should be able to prove it by clicking on the audio mixer, finding SDRC in its list of controls and muting it.

With no receivers active SDRC is sending out all zeros, silence, if it sends out anything at all. So something else would have to be providing the sound you are hearing. If this only happens with the RSP2 that suggests it is related to the RSP2 demands on the USB power bus leaking into the audio system on the motherboard, This is not something Simon can fix if that is the case. Does the RSP2 have an option for separate power? If so try that.

Are you using a USB audio card? If so place it on a separate USB2 powered hub from the RSP2. Ideally move the RSP2 to its own powered hub. This MAY help. But this also could be pickup on your wiring from a very strong local station. But there is nothing in a basic SDR design that would provide a software path for this audio into your motherboard audio.

{^_^}

On 20200807 09:40:37, bigtalk1233@... wrote:
I think Mikael may have been having a separate issue, his noise floor is about -140 which is way below mine at -70. This problem doesn't occur or isn't noticeable at this low level. But in some cases, like listening to 40m when the big shortwave stations are booming in, the problem is highly noticeable. Console seems to output the rectified audio of the wideband spectrum to the default output device in Windows, and this operates independently of VAC or any receiver settings.  It also makes no difference if I zoom  in or out on the waterfall or spectrum,  so it seems to surround the wideband IQ processing from the RSP2. The audio produced sounds like it is highly filtered, about 100Hz of bandwidth around 2800Hz centered I would estimate, and with big +40 signals it becomes quite loud.


Re: RSP1DX

Bob Dengler
 

At 8/6/2020 05:11 PM, you wrote:
Here's my RSP1A on 2 meters, notice the signal strength of the repeater at 146.700 as 90 dB above the noise floor (the small mound at the floor of that signal is repeater splatter). The little RSP1A handles that dynamic range just fine.
No, it is not "repeater splatter" - it is LO phase noise. If you try the same test @ 70 cm you'll find that "splatter" consistently 10 dB higher relative to the carrier. This is a significant problem that is driving me away from the SDRPlay product & towards Airspy: the AirSpy Mini's phase noise is 10 dB lower.

Also wonder how you can get 90 dB of dynamic range when the RSP1a's ADC is 14 bits (84 dB max. possible)? Since you're sampling at least 3.6 MHz decimation isn't coming into play.

What is the resolution bandwidth of the spectrum display?

Bob NO6B


Broken up audio sometimes with Bluetooth headset

Mag loop Simon
 

Hi

not sure where to post this, so starting here if you do not mind..

trying to go wireless headset..bought one on ebay cheapo. ( Bluetooth.)

Bluetooth dongle in usb socket..gaming pc..quick..lots of ram etc..sdrc v3.24 win 10.

every now  and again on initialisation of tx, i lose some audio..its as though losing 50% of audio but in packets..say 50ms??tx  Audio good. audio gone. audio good. etc but at a very fast rate..
then it just clears itself and all is good, then it may come back..( espically if i change on sdrc from normal audio to dx or visa versa while still in tx.OR de key and re key..)

rx audio though headset is always good..

anyone got an idea of what is going on?? ( as I do not.) Is it just should have bought more expensive wireless headset??

thank you all for reading   Mag loop Simon.


Re: SDRC Issue below 2 or so MHz

George Stein - NJ3H
 

I would like to thank everyone who responded with ideas and suggestions.  This group's members are always so quick to jump in and help.  I really appreciate that.

It was indeed the auto mute setting.  Not sure how it got set, but obviously I hit it somewhere along the way.  There are so many features of SDRC, that learning what every thing does, I sometimes just don't know exactly what they do.

Again thanks to all.  enjoy your weekend.

Regards,
George, NJ3H
Redmond, Oregon USA



On Friday, August 7, 2020, 09:31:13 AM PDT, Simon Brown <simon@...> wrote:


Auto Mute!

 

Ribbon bar, Home, Wideband DSP disable Auto mute. Strong MW stations are muting the rx.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Tom Crosbie G6PZZ
Sent: 07 August 2020 17:14
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] SDRC Issue below 2 or so MHz

 

You are right, George. This is odd. The only thing that springs to mind is the antenna.

Are you feeding both receivers from the same antenna? Is it maybe an active antenna that has a fault and cutting off below 2MHz?

Or do you have a filter or something in the feeder?

Perhaps try a wire or whip directly into the receivers?

Can’t think of much else.

Sounds more hardware than software but check filter settings in SDRC to be sure. I don’t have these radios, so this is conjecture on my part.

Good luck hunting this one down.

 

73 Tom G6PZZ

Nr Chesterfield | NE Derbyshire | UK | IO93he

HF250 | Sentinel 4 | RSPdx | RM50 | TR2 | ATS 808

15m MLB | MTA | D707

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of George Stein - NJ3H via groups.io
Sent: 07 August 2020 16:57
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] SDRC Issue below 2 or so MHz

 

Greetings,
Something very odd this morning.

When using SDRC with the Perseus or Elad S2, there is no signal (spectrum and waterfall below about 2 mhz.  Both radios work fine with their native software.

You can see what happens in the video as I tune below 2 megs.

Any thoughts for what is happening.  I have rebooted and tried what I think are the normal type solutions.

Regards,
George

Attachments:


Re: USB timeout 10 minute W10 in Parallels

John W0MPM
 

Went into the windows device manager and Universal Serial Device Controllers of which found 3. Two "USB Root Hub", and a single "USB Root Hub (USB 3.0)". Looking at the properties found the 'Power Management' property of the "... (USB 3.0)" was set to "Allow the computer to turn this device off ..." and unchecked that permission box.

No change. After 10 minutes the Airspy HF+ 'turns off'. The amber power lite is still on but the blue lite that turns on when HF+ is running is off; and SDRc is not frozen. The corrective action is to 'Stop' the radio (takes 5 to 10 seconds) then 'Start' the radio again. 

Is there an equivalent MacOS setting to look at that would keep the USB device on or ...?

Not sure what to take a picture of. This is a screenshot of the task manager when everything is working normally. SDR Console varies between about 9% to 17% usage. 


--
W0MPM John

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