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TOPIC: RX in 80 Meters very bad with SDR3

RX in 80 Meters very bad with SDR3 03 Mar 2022 05:19 #1

My SunSDR Pro with SDR3 IN 80 Meters is deaf
it does not receive well, but with the SDR2 it works normally
with any of the versions of SDR3 I have this problem
Does anyone have the same problem
Thank you
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RX in 80 Meters very bad with SDR3 03 Mar 2022 08:14 #2

  • G4ENZ
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Not an issue for me with SunSDR2 Pro, Windows 11 and 0.12.0 Firmware 78.8
Have you the correct antenna port mapped in BM?

GL es 73 de Martin - G4ENZ
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RX in 80 Meters very bad with SDR3 03 Mar 2022 15:56 #3

Hello, Thank you for answering, if the antenna is correct, I use port # 2
The BM is by default, it is Firmware 78.8 using wind 10
73"
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RX in 80 Meters very bad with SDR3 03 Mar 2022 15:59 #4

BMSUNSDR.jpg
WB4RAG wrote:
Hello, Thank you for answering, if the antenna is correct, I use port # 2
The BM is by default, it is Firmware 78.8 using wind 10
73"
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RX in 80 Meters very bad with SDR3 03 Mar 2022 16:12 #5

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What is your background noise signal level on 80m? In a 3kHz bandwidth, mine is a noisy -82dBm as a result of my location. I would expect something in the range -110dBm if you are rural or -60dBm if you've got neighbours from hell. Maybe post a screenshot of ESDR3 working in receive.

80m.jpg
Last Edit: 03 Mar 2022 16:15 by G4ENZ.
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RX in 80 Meters very bad with SDR3 03 Mar 2022 17:47 #6

G4ENZ wrote:
What is your background noise signal level on 80m? In a 3kHz bandwidth, mine is a noisy -82dBm as a result of my location. I would expect something in the range -110dBm if you are rural or -60dBm if you've got neighbours from hell. Maybe post a screenshot of ESDR3 working in receive.

80m.jpg

My location is in the city, I have neighbors on both sides, if you see the photos of both software you will see that there is a difference, right now I have no conditions because of the time it is
thanks for your time
73"
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RX in 80 Meters very bad with SDR3 03 Mar 2022 20:31 #7

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I see from your SDR3 picture that you have -20dB attenuation set. If you were to remove that I think your noise floor would just drop further and it is already too low. It looks to me like a radio without an antenna plugged in BUT your ESDR2 pictures says that the hardware is all working fine. Very strange.

I will be offline for a week now but maybe someone else will be able to suggest what is wrong from your pictures.

73 Martin G4ENZ
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RX in 80 Meters very bad with SDR3 03 Mar 2022 21:34 #8

  • Tom W3FRG
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Have you looked at the Receive EQ settings?
When they are at the mid position it's like having the audio volume off. They need to be increased, see attached as an example.
Click on Settings then the headset, left column.
GL Tom W3FRG


RxEQSetuoSDR3V12.jpg
Last Edit: 03 Mar 2022 21:36 by Tom W3FRG.
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RX in 80 Meters very bad with SDR3 03 Mar 2022 23:13 #9

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Tom W3FRG wrote:
Have you looked at the Receive EQ settings?
When they are at the mid position it's like having the audio volume off. They need to be increased, see attached as an example.
Click on Settings then the headset, left column.
GL Tom W3FRG


RxEQSetuoSDR3V12.jpg

No-- that will only make the receive audio NON-FLAT

it works fine without doing anything like that as Martin mentioned.
What is AGC and is it set to AUTO in V3 if so, remove auto and set the AGC threshold slightly above mid-point and see what happens?

Another possibly and more likely- Did you do an upgrade of V3 to the current V3?
If the answer is yes. take a screen shot or picture of all your settings,
Uninstall V3, after the uninstall REMOVE the V3 directory (Program Files-ExpertElectronics- ExpertSDR3) you don't want those files it leaves behind
it is more likely you have a corrupted data file and doing a uninstall and removing the folder- rebooting and re install will correct it
73 Rick
Last Edit: 03 Mar 2022 23:14 by N8SDR.
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RX in 80 Meters very bad with SDR3 04 Mar 2022 02:59 #10

G4ENZ wrote:
I see from your SDR3 picture that you have -20dB attenuation set. If you were to remove that I think your noise floor would just drop further and it is already too low. It looks to me like a radio without an antenna plugged in BUT your ESDR2 pictures says that the hardware is all working fine. Very strange.

I will be offline for a week now but maybe someone else will be able to suggest what is wrong from your pictures.

73 Martin G4ENZ

Thanks Martin 73"
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RX in 80 Meters very bad with SDR3 04 Mar 2022 03:44 #11

N8SDR wrote:
Tom W3FRG wrote:
Have you looked at the Receive EQ settings?
When they are at the mid position it's like having the audio volume off. They need to be increased, see attached as an example.
Click on Settings then the headset, left column.
GL Tom W3FRG


RxEQSetuoSDR3V12.jpg

No-- that will only make the receive audio NON-FLAT

it works fine without doing anything like that as Martin mentioned.
What is AGC and is it set to AUTO in V3 if so, remove auto and set the AGC threshold slightly above mid-point and see what happens?

Another possibly and more likely- Did you do an upgrade of V3 to the current V3?
If the answer is yes. take a screen shot or picture of all your settings,
Uninstall V3, after the uninstall REMOVE the V3 directory (Program Files-ExpertElectronics- ExpertSDR3) you don't want those files it leaves behind
it is more likely you have a corrupted data file and doing a uninstall and removing the folder- rebooting and re install will correct it

Thanks Tom Uninstall everything, delete folders and nothing
still the same, I will continue using the SDR2, I put photos so you can see the difference in rx is very big between SDR2 and SDR3
7
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RX in 80 Meters very bad with SDR3 04 Mar 2022 11:49 #12

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When you switched between Versions SDR2 and SDR3 SW, did you get the request to change the FW?
And did the correct version get installed?
The SDR3 FW Version 78.8 is not compatible with SDR2.
Have you read the Release Description for SDR3 0.12.0 Alpha release?

GL Tom W3FRG
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RX in 80 Meters very bad with SDR3 05 Mar 2022 02:56 #13

W3FRG wrote:
When you switched between Versions SDR2 and SDR3 SW, did you get the request to change the FW?
And did the correct version get installed?
The SDR3 FW Version 78.8 is not compatible with SDR2.
Have you read the Release Description for SDR3 0.12.0 Alpha release?

GL Tom W3FRG


Hello Thanks for answering, in relation to the FW Version 78.8 I have it installed when I use the sdr3
when changing to sdr2 it asks me to update to v66.8
73"
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RX in 80 Meters very bad with SDR3 14 Mar 2022 03:30 #14

Thank you all for your time
I was able to find the RX Problem
In the part of the filter was in car
Just Change it HP.LPF and Done
73" For Everyone
Thanks
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