Date   

Reverse Mouse Tuning Wheel

joe_word
 

Is there a parameter to reverse the Mouse Tuning Wheel direction? I use a track ball and if I rotate the wheel clock wise the frequency goes down which is backwards. 

Joe  N9VX 


Re: Keeping Tuned Freq in Center

joe_word
 

I have the same question and do not see an answer. I know I can click on >|< and will put the frequency back in the middle, but do not see a parameter that will make it stay there.

Joe  N9VX


Re: Antennas: Best Mini-Whip ??

Brent Seres/ VE3CUS
 

Or do you a a friend nearby that would let you install an RX and antenna? When we had our cabin in the woods in central Ontario, I had a Yaesu transceiver up there and used the Remotehams software and a DSL link. It worked wonderfully. Good luck!

73
Brent 
VE3CUS 





Re: Antennas: Best Mini-Whip ??

Kriss Kliegle KA1GJU
 

Or just find a server near your QTH and not listen to local QRM:

http://onairv3.sdrspace.com/onair-v3.xml

There used to be at least one in TX as I recall.

73 Kriss KA1GJU
Home of the SDRC Super Station Servers in NH, USA


Re: Antennas: Best Mini-Whip ??

Roger Need
 

The MiniWhip only works well if outside and a long ways from your home.  Inside they just pickup noise.

For inside listening a quality magnetic loop is your best option. 

Roger


Re: Audio volume level passed to apps lower than expected

jdow
 

The VERY common technique for AGC in SDRs turns the whole chain around backwards. It measures the input, calculates what is needed to get the desired output, and applies that to the signal leaving the AGC process. When everything is "float" type digits it does not matter if you run filters and other "IF" processing at levels of 0.0001 rms or 1.0 rms. And the gain can be anything within the range of "float" type digits for AGC. (I did find a bug in FM stereo demodulators that were running at a level of 1.0 getting a value in a digital feedback loop, the phase lock loop for the stereo demodulator, that dropped one of the terms down below the range of a 32 bit floating point (float) number. The loop did not work the way I "knew" it should work so I spent time tracking it down and figuring out a somewhat rude but very effective fix.)

{^_^}

On 20210915 14:46:31, Tony_AD0VC wrote:
Frank,

The waterfall and spectrum are upstream from the AGC function in the DSP panel. I'm not the one to ask for the particulars but I would guess that the AGC is part of the demodulator function. Some SDRs do have a hardware AGC function as well but that is not what is being controlled in the DSP panel of SDRC.

Tony


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Frank O'Donnell K6FOD <gio@...>
Sent: Wednesday, September 15, 2021 12:31 PM
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Audio volume level passed to apps lower than expected
 
Thanks, Tony. I see that when I have AGC off, the gain slider in that section had been set to minimum. Moving that slider up and down doesn't affect the RF signal level as seen in the waterfall or dBm meter. However, it does significantly affect the audio output level, and by moving it up I get a strong input level in the apps receiving audio from SDR Console. So problem solved -- thanks again!

Just so I understand this, am I right in thinking that the AGC slider acts at the IF stage? Thus it doesn't affect RF levels reported, but will affect the audio output since that's downstream? Also -- it appears that it doesn't affect levels as recorded in I/Q .wav files, which I gather are taken before the IF stage?

Frank


Re: Audio volume level passed to apps lower than expected

jdow
 

Adjust the AG pane's Gain control. Listen to it. Ignore what the waterfall and other stuff do. Just listen. You seem to be expecting behavior that won't happen.

One thing to paste into your head is that SDRs are not simulating analog receiver processes. They use other techniques that have no (practical) equivalent in analog receivers. (Pardon me while I invest in a case of insane giggles imagining the amount of circuitry needed to take an analog fourier transform.... A 1 million band graphics equalizer anyone? Pardon me please. Sometimes my mind veers off into strange places. {O.O} REALLY strange places.) Simon's design seems to be further off analog prototypes than most at a guess.

{^_^}

On 20210915 11:31:08, Frank O'Donnell K6FOD wrote:
Thanks, Tony. I see that when I have AGC off, the gain slider in that section had been set to minimum. Moving that slider up and down doesn't affect the RF signal level as seen in the waterfall or dBm meter. However, it does significantly affect the audio output level, and by moving it up I get a strong input level in the apps receiving audio from SDR Console. So problem solved -- thanks again!

Just so I understand this, am I right in thinking that the AGC slider acts at the IF stage? Thus it doesn't affect RF levels reported, but will affect the audio output since that's downstream? Also -- it appears that it doesn't affect levels as recorded in I/Q .wav files, which I gather are taken before the IF stage?

Frank


Re: Audio volume level passed to apps lower than expected

jdow
 

AGC off? Have you changed the AGC Gain control?
{^_^}

On 20210915 08:14:28, Frank O'Donnell K6FOD wrote:
On Tue, Sep 14, 2021 at 11:16 PM, Simon Brown wrote:
Always love to see a screenshot.


Re: Antennas: Best Mini-Whip ??

d_ziolkowski
 

John check out


I have an H800. works well, very low profile

Dan KC2STA

On Wed, Sep 15, 2021 at 4:38 PM John Dusek <johndusek3@...> wrote:
Hi -

I am a shortwave listener (and Ham, but not active for now).

We recently sold our home and are in rented accommodation for a while.  This means not having the same freedom to put up a high EFLW or other wire design, and not having a controlled (fenced) area to use an external magnetic loop.

Can anyone recommend a mini-whip model or seller that has been used and proven before? 

Despite the relatively cheap prices, I don't just want to order one off eBay and hope that it works, given I will need to mount and ground it in a stealthy way.

If anyone has a suggestion, please let me know.

Many thanks,

John - W3JED



--
Dan Ziolkowski KC2STA
SKCC #4290T
Ubuntu LINUX


Re: Audio volume level passed to apps lower than expected

Tony_AD0VC
 

Frank,

The waterfall and spectrum are upstream from the AGC function in the DSP panel. I'm not the one to ask for the particulars but I would guess that the AGC is part of the demodulator function. Some SDRs do have a hardware AGC function as well but that is not what is being controlled in the DSP panel of SDRC.

Tony


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Frank O'Donnell K6FOD <gio@...>
Sent: Wednesday, September 15, 2021 12:31 PM
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Audio volume level passed to apps lower than expected
 
Thanks, Tony. I see that when I have AGC off, the gain slider in that section had been set to minimum. Moving that slider up and down doesn't affect the RF signal level as seen in the waterfall or dBm meter. However, it does significantly affect the audio output level, and by moving it up I get a strong input level in the apps receiving audio from SDR Console. So problem solved -- thanks again!

Just so I understand this, am I right in thinking that the AGC slider acts at the IF stage? Thus it doesn't affect RF levels reported, but will affect the audio output since that's downstream? Also -- it appears that it doesn't affect levels as recorded in I/Q .wav files, which I gather are taken before the IF stage?

Frank


Re: Antennas: Best Mini-Whip ??

Jeff Kelly
 

I have had decent results with the MLA-30Plus loop antenna and they are pretty directional.

Jeff
K2SDR

On Sep 15, 2021, at 4:38 PM, John Dusek <johndusek3@...> wrote:

Hi -

I am a shortwave listener (and Ham, but not active for now).

We recently sold our home and are in rented accommodation for a while.  This means not having the same freedom to put up a high EFLW or other wire design, and not having a controlled (fenced) area to use an external magnetic loop.

Can anyone recommend a mini-whip model or seller that has been used and proven before? 

Despite the relatively cheap prices, I don't just want to order one off eBay and hope that it works, given I will need to mount and ground it in a stealthy way.

If anyone has a suggestion, please let me know.

Many thanks,

John - W3JED


Antennas: Best Mini-Whip ??

John Dusek
 

Hi -

I am a shortwave listener (and Ham, but not active for now).

We recently sold our home and are in rented accommodation for a while.  This means not having the same freedom to put up a high EFLW or other wire design, and not having a controlled (fenced) area to use an external magnetic loop.

Can anyone recommend a mini-whip model or seller that has been used and proven before? 

Despite the relatively cheap prices, I don't just want to order one off eBay and hope that it works, given I will need to mount and ground it in a stealthy way.

If anyone has a suggestion, please let me know.

Many thanks,

John - W3JED


Re: Audio volume level passed to apps lower than expected

Frank O'Donnell K6FOD
 

Thanks, Tony. I see that when I have AGC off, the gain slider in that section had been set to minimum. Moving that slider up and down doesn't affect the RF signal level as seen in the waterfall or dBm meter. However, it does significantly affect the audio output level, and by moving it up I get a strong input level in the apps receiving audio from SDR Console. So problem solved -- thanks again!

Just so I understand this, am I right in thinking that the AGC slider acts at the IF stage? Thus it doesn't affect RF levels reported, but will affect the audio output since that's downstream? Also -- it appears that it doesn't affect levels as recorded in I/Q .wav files, which I gather are taken before the IF stage?

Frank


Re: Audio volume level passed to apps lower than expected

Tony_AD0VC
 

Sorry, I meant the gain slider. Slope and threshold are only visible with AGC on. With it off you get a gain slider.

Tony


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Tony_AD0VC <canthony15@...>
Sent: Wednesday, September 15, 2021 11:19 AM
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Audio volume level passed to apps lower than expected
 
Frank,

When you have AGC off, there are sliders in the AGC section that you use to adjust the gain. To the right of the AGC buttons  is an icon to click for the sliders and another for the graph. Adjust the slope and threshold sliders to get the level you want.

Tony


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Frank O'Donnell K6FOD <gio@...>
Sent: Wednesday, September 15, 2021 11:06 AM
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Audio volume level passed to apps lower than expected
 

[Edited Message Follows]

On Wed, Sep 15, 2021 at 08:23 AM, Ryan Butler wrote:
AGC is off and your gain is too low?
The AGC is indeed off.

I wouldn't say the gain (signal levels as seen in waterfall) is too low. This appears normal. It's the level of the audio output I'm looking at.


Re: Audio volume level passed to apps lower than expected

Tony_AD0VC
 

Frank,

When you have AGC off, there are sliders in the AGC section that you use to adjust the gain. To the right of the AGC buttons  is an icon to click for the sliders and another for the graph. Adjust the slope and threshold sliders to get the level you want.

Tony


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Frank O'Donnell K6FOD <gio@...>
Sent: Wednesday, September 15, 2021 11:06 AM
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Audio volume level passed to apps lower than expected
 

[Edited Message Follows]

On Wed, Sep 15, 2021 at 08:23 AM, Ryan Butler wrote:
AGC is off and your gain is too low?
The AGC is indeed off.

I wouldn't say the gain (signal levels as seen in waterfall) is too low. This appears normal. It's the level of the audio output I'm looking at.


Re: Audio volume level passed to apps lower than expected

Frank O'Donnell K6FOD
 
Edited

On Wed, Sep 15, 2021 at 08:23 AM, Ryan Butler wrote:
AGC is off and your gain is too low?
The AGC is indeed off.

I wouldn't say the gain (signal levels as seen in waterfall) is too low. This appears normal. It's the level of the audio output I'm looking at.


Re: Audio volume level passed to apps lower than expected

Ryan Butler
 

AGC is off and your gain is too low?


On Wed, Sep 15, 2021 at 10:14 AM Frank O'Donnell K6FOD <gio@...> wrote:
On Tue, Sep 14, 2021 at 11:16 PM, Simon Brown wrote:
Always love to see a screenshot.


Re: Audio volume level passed to apps lower than expected

Frank O'Donnell K6FOD
 

On Tue, Sep 14, 2021 at 11:16 PM, Simon Brown wrote:
Always love to see a screenshot.


Re: Audio volume level passed to apps lower than expected

Simon Brown
 

Screenshots,

 

Always love to see a screenshot.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Frank O'Donnell K6FOD
Sent: 15 September 2021 05:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio volume level passed to apps lower than expected

 

Thanks, Dale, good ideas. In my case, noise reduction is not enabled.

As for the equalizer, it's set with each of the vertical sliders at mid-range so the graphic shows all of them at zero (neither + nor -). I see the equalizer's checkbox to enable it is not ticked. I assume this is all the default, as I've never played with it. Do you think the settings as shown in your screen print are more effective?


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Audio volume level passed to apps lower than expected

Frank O'Donnell K6FOD
 

Thanks, Dale, good ideas. In my case, noise reduction is not enabled.

As for the equalizer, it's set with each of the vertical sliders at mid-range so the graphic shows all of them at zero (neither + nor -). I see the equalizer's checkbox to enable it is not ticked. I assume this is all the default, as I've never played with it. Do you think the settings as shown in your screen print are more effective?

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