Date   

Re: SDR Console with Airspy R2

Simon Brown
 

George,

 

  1. Adjust the contrast (RHS), just click [Auto], this will help a lot, then post a screenshot.
  2. Adjust the range with the Low and High options which are shown when the mouse is moved over the spectrum / waterfall.
  3. You seem to have a lot of gain which I can’t explain – the Liner gain setting of 10 is good. It may be noise, the new screenshot will help.
  4. SDR# shows relative to full scale, a different concept.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of George Stein - NJ3H via groups.io
Sent: 04 November 2021 22:39
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] SDR Console with Airspy R2

 

Hi JoAnne,

Thanks for your reply.  The new SDRC picture is at 10 MHz bandwidth.  The new SDR# is at 8 MHz bandwith.  The audio has a lot of hiss in it using SDRC, while SDR# is crystal clear.

Yes I am using the same antenna.

So I am looking for the gain control in SDRC?  I just haven't found it yet.


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Re: Satellite Setup - Height

Simon Brown
 

Height is just your height ASL. Makes a very, very small difference to the Doppler correction.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of George Stein - NJ3H via groups.io
Sent: 05 November 2021 07:27
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Satellite Setup - Height

 

On the setup screen for home location for satellite reception, there is a data field called 'Height'.  At first blush I would just enter the height above sea level for my location.  However, there is a link to a site that talks about many different considerations.  Unfortunately, I have no idea of the calculation that is needed to determine what the height value should be. My elevation is 912m ASL.  Unless someone can give me some info about how to refine this value, I will have to go with that. 

I did learn that 0 degrees longitude is now considered a few hundred meters from the brass rail in the sidewalk at Greenwich which I straddled many year ago.  Perhaps this is why Google map's state and country boundaries always seem a little off when zoomed in.

So can anyone clarify the height parameter for me?  I am not so sure that the height value is as critical as the lat/long is.

Thanks to the group and people being there to answer questions.

Regards,
George


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


Satellite Setup - Height

George Stein - NJ3H
 

On the setup screen for home location for satellite reception, there is a data field called 'Height'.  At first blush I would just enter the height above sea level for my location.  However, there is a link to a site that talks about many different considerations.  Unfortunately, I have no idea of the calculation that is needed to determine what the height value should be. My elevation is 912m ASL.  Unless someone can give me some info about how to refine this value, I will have to go with that. 

I did learn that 0 degrees longitude is now considered a few hundred meters from the brass rail in the sidewalk at Greenwich which I straddled many year ago.  Perhaps this is why Google map's state and country boundaries always seem a little off when zoomed in.

So can anyone clarify the height parameter for me?  I am not so sure that the height value is as critical as the lat/long is.

Thanks to the group and people being there to answer questions.

Regards,
George


Re: Satellite Push Buttons

George Stein - NJ3H
 

Thanks, Max.  That worked fine.  I appreciate you help.

Regards,
George


Re: SDR Console with Airspy R2

jdow
 

I have not used the satellite capability.
{^_^}

On 20211104 16:00:53, George Stein - NJ3H via groups.io wrote:

I finally found the setting.  Need to clean my glasses more often.

Any suggested settings to maximize reception and quality using Console will be appreciated, JoAnne.  Have you used the satellite capability in Console as of yet?

Thanks,

George


Re: SDR Console with Airspy R2

jdow
 

You are running SDRC at a substantially higher gain, I notice. (10 vs 6.)

{^_^}

On 20211104 15:38:34, George Stein - NJ3H via groups.io wrote:

Hi JoAnne,

Thanks for your reply.  The new SDRC picture is at 10 MHz bandwidth.  The new SDR# is at 8 MHz bandwith.  The audio has a lot of hiss in it using SDRC, while SDR# is crystal clear.

Yes I am using the same antenna.

So I am looking for the gain control in SDRC?  I just haven't found it yet.
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Re: Satellite Push Buttons

Max
 

Sorry, managed to insert picture in error as well as attach. Click second one (the attachment). It's bigger and more readable.

Max


Re: Satellite Push Buttons

Max
 

See attached pic.

First, press "Select" to left of the buttons you have circled. Then "Browse" and Favourites is a tick box option from which you can add to the push button list. Make sure "Add to Satellite List is ticked as shown in the picture.

Hope it makes sense.

73

Max


Satellite Push Buttons

George Stein - NJ3H
 

Kindly look at the attached picture.

Notice the satellites buttons shown circled in red.  Also notice the popup that shows a group called 'Favs'.

How do I take my favs group and make them the push buttons shown where the existing ones are displayed.

Apparently, I am not sure what the groups are used for.

Thanks,
George


Re: SDR Console with Airspy R2

Kriss Kliegle KA1GJU
 

I find I have to run the gain on my R2 at 15 to 17 to get reasonable signal strengths, and clear reception.
Here's the FM band on a 2M/440 antenna up 50' on my tower:



73 Kriss KA1GJU


Re: SDR Console with Airspy R2

George Stein - NJ3H
 

I finally found the setting.  Need to clean my glasses more often.

Any suggested settings to maximize reception and quality using Console will be appreciated, JoAnne.  Have you used the satellite capability in Console as of yet?

Thanks,

George


Re: SDR Console with Airspy R2

George Stein - NJ3H
 

Hi JoAnne,

Thanks for your reply.  The new SDRC picture is at 10 MHz bandwidth.  The new SDR# is at 8 MHz bandwith.  The audio has a lot of hiss in it using SDRC, while SDR# is crystal clear.

Yes I am using the same antenna.

So I am looking for the gain control in SDRC?  I just haven't found it yet.


Re: SDR Console with Airspy R2

jdow
 

To a degree you are comparing apples and oranges. Zoom SDRC out all the way so it is showing roughly the same bandwidth as SDRSharp. Then don't cut off the edges of SDRC in your pictures. The edges contain interesting information.

Make sure in your definitions that the sample rate is set to 10 Msps. That''s called "Bandwidth" in the select radio dialog and definitions:


I (perhaps rashly) presume that is the same AirSpy R2 on the same antenna. For comparison's sake showing the gain settings on the AirSpy R2 would be helpful, I wish Simon showed the zoom factor on the status bar or the header bar. In general I get the same performance in practical SNR terms on both programs. I do get a whole lot more of the AirSpy performance on SDRC with its matrix and multiple receivers.

{^_^}

On 20211104 13:46:07, George Stein - NJ3H via groups.io wrote:

Greetings.

I hope someone can help me with this issue.

For the first time I am using my R2 with SDRC.  I want to get it working to use with the satellite capability in SDRC.

As you can see on the attached pictures, it appears that there is too much gain.  Where in SDRC is a setting to cut back on the RF gain.

I have also attached a picture of the R2 using SDR# for comparison.

Please let me know if any other screenshots would be helpful.

Thanks for the help.

Regards,
George
SDR sharp.jpg

Screenshot-2021-11-04-133622.jpeg

Screenshot-2021-11-04-133651.jpeg


SDR Console with Airspy R2

George Stein - NJ3H
 

Greetings.

I hope someone can help me with this issue.

For the first time I am using my R2 with SDRC.  I want to get it working to use with the satellite capability in SDRC.

As you can see on the attached pictures, it appears that there is too much gain.  Where in SDRC is a setting to cut back on the RF gain.

I have also attached a picture of the R2 using SDR# for comparison.

Please let me know if any other screenshots would be helpful.

Thanks for the help.

Regards,
George


Re: Preset recordings and scheduler

Paul N
 

See the following help data on SDR-radio.com about 1/3 down the page...
Thank you for your response Kriss


On Wed, 3 Nov 2021 at 14:51, Kriss Kliegle KA1GJU <kliegle@...> wrote:
See the following help data on SDR-radio.com about 1/3 down the page...

https://www.sdr-radio.com/RecAndPlayback

73 Kriss KA1GJU


Re: Preset recordings and scheduler

Kriss Kliegle KA1GJU
 

See the following help data on SDR-radio.com about 1/3 down the page...

https://www.sdr-radio.com/RecAndPlayback

73 Kriss KA1GJU


Preset recordings and scheduler

Paul N
 

Is it possible to schedule a preset recording rather than instantly starting?
If so, how please - rather new to this?


Multi-channel ALE Deocder: Introduction

Nils Schiffhauer
 

Hi - please find an introduction ("How-to") with some examples/screenshot of the new Black Cat ALE decoder for up to 24 channel in parallel at:

https://dk8ok.org/2021/10/31/black-cat-ale-decoding-24-ale-channels-in-parallel/

Please see this as an add-on of a practitioner to the manual.

Chris, the software author, has provided also e.g. some logging capabilities which are to be polished up a bit.

Will attack his Multi Channel ACARS Decoder in due time.

73 Nils, DK8OK
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dk8ok.org


Re: Steerable antenna anyone?

Peter Nolte
 

ISM = Industrial, Scientific, Medical (use of frequencies, e.g. 27.120 MHz).

73, Peter, DC6BN


Am 31.10.2021 um 15:40 schrieb Kriss Kliegle KA1GJU:

Thank you Paul!
What are the squiggle lines? I thought those were RF ovens that leak RF?
What's ISM?

Kriss KA1GJU


Multichannel decoder

Nils Schiffhauer
 

Hi - we all know that SDRC features the unique possibility to use up to 24 demodulators in parallel.
Using them for decoding and recording had been quite a nut to crack for some.

Recently, Chris, W3HFU, has developed multi-channel decoders for ALE and VHF-ACARS.
He offers a free preview of Black Cat ALE and Black Cat ACARS on his webpage:

http://blackcatsystems.com/software/black_cat_ale_decoder.html
http://blackcatsystems.com/software/black_cat_acars_decoder.html

I was glad to have tested the ALE beast over the last weeks. For me it is a paradigm shift in all aspects of ALE monitoring - performance, decoding quality and handling.
It stood my challenging tests of unattended decoding over many hours of many channels in parallel with flying colours.

A more detailed blog entry with my epxeriences and giving some hints will duly follow.

73 Nils, DK8OK

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