ADS-B very poor reception - Why ?

Discussions about everything to do with SDRuno
Patrick73
Posts: 76
Joined: Thu May 31, 2018 9:39 am

Re: ADS-B very poor reception - Why ?

Post by Patrick73 » Fri Jul 26, 2019 11:39 am

For sure it helps.

But :
(assuming you are on x64 machine and use the default installation directory, otherwise change directory to where you installed dump1090)
I'm indeed running a 64bits desktop and dump1090 uses the default installation directory.
If you open a command prompt and navigate to... C:\Program Files (x86)\SDRplay\dump1090
Sorry, I don't know to 'navigate' there and access these cmd with the prompt command ... (I have C:\Users\Admin>_ first ; what to type from here ?
I tried cd C:\Program Files (x86)\SDRplay\dump1090 but it does not show what you mention ...

From C:\Program Files (x86)\SDRplay\dump1090, then right-click and 'modify' a .txt window open and I can see the line you mention (see capture).
Is it OK to add the command line option here ?

Finally, a couple of (stupid) questions :
- Should the RSP be connected when changing this command line ?
- Considering I only connect an antenna to TUNER 2 (no antenna attached to TUNER 1) is it still necessary to add this "--rspduo-single" text ?

Sorry to bother you with silly questions ...
Attachments
dump.JPG
dump.JPG (91.35 KiB) Viewed 1994 times
Last edited by Patrick73 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason

sdrplay
Posts: 978
Joined: Wed Jan 07, 2015 7:58 am

Re: ADS-B very poor reception - Why ?

Post by sdrplay » Fri Jul 26, 2019 12:04 pm

Hello Patrick,

Assuming you have the correct permissions to edit those files directly, then you can modify them that way.

The --rspduo-single will allow you to use Zero IF mode - it can be used with either tuner, but only in single tuner mode - I thought it might be an interesting comparison for you, but it shouldn't be essential for you to use it.

Best regards,

SDRplay Support

Reason: No reason

Patrick73
Posts: 76
Joined: Thu May 31, 2018 9:39 am

Re: ADS-B very poor reception - Why ?

Post by Patrick73 » Fri Jul 26, 2019 12:11 pm

I managed to display the directory, but now how do I access start8I.cmd content to add the text at the end ?
Attachments
cd dir.JPG
cd dir.JPG (88 KiB) Viewed 1987 times
Last edited by Patrick73 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason

sdrplay
Posts: 978
Joined: Wed Jan 07, 2015 7:58 am

Re: ADS-B very poor reception - Why ?

Post by sdrplay » Fri Jul 26, 2019 12:17 pm

you can edit it in notepad or some other editor you have.

Best regards,

SDRplay Support

Reason: No reason

Patrick73
Posts: 76
Joined: Thu May 31, 2018 9:39 am

Re: ADS-B very poor reception - Why ?

Post by Patrick73 » Fri Jul 26, 2019 12:20 pm

Thanks again, great support.
Have a nice day.
Last edited by Patrick73 on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason

borjam
Posts: 2
Joined: Wed Jun 22, 2016 7:46 am

Re: ADS-B very poor reception - Why ?

Post by borjam » Fri Aug 09, 2019 6:30 am

Did you check for interference?

A band pass filter is always a very good idea. I purchased a cavity filter from Sysmocom and it works really well in an area with FM broadcast stations reaching signal levels of -15 dBm.

http://shop.sysmocom.de/products/cf1090-kt30
Last edited by borjam on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
Reason: No reason

Post Reply