User Profile

[abcd567]

Great! The filter has removed lot of interference.
Did you compare your stats (plane count, message rate, maximum distance) with and without filter?...

[abcd567]

The Antenna you have purchased uses a BNC connector for external use. This is not good. BNC connector has limited weather resistance. You will need to...

[abcd567]

After you receive & connect the blue FA dongle and dark blue FA filter, run the scan again to see the reduction in mobile signal.

As...

[abcd567]

Without a LNA (internal to dongle or external), in most cases best setting of gain is -10 (minus ten). Please note thst other than minus ten, any negetive...

[abcd567]

Glad to know modesmixer2 started working after deleting the wrong file, and downloading the right one.

[abcd567]

Examining contents of folder /usr/share/mm2 revealed following:

The script is for RPi models 2/3/4 and downloaded "modesmixer2_rpi2-3_deb9_20190223.tgz",...

[abcd567]

Seems mismatch or corrupted file

Please post output of the last 3 commands

cd /usr/share/mm2

ls

file

...

[abcd567]

I use these, both are good.
Both are generic DVB-T (with Realtek/RTL2832 + Rafael 820T2 chips). Both have RF Amplifier (LNA) & 1090 mhz...

[abcd567]

Concuct scans of RF signals in your enviroment with:

(1) Antenna below the gutter (where you get good reception)
(2) Antenna high up...

[abcd567]

(1) Strange that you installed dump mutability and it got changed to dump fa. Seems some magic spell on your Pi

(2) Irrespective...

[abcd567]

I am using Air Nav FlightStick (green color) with my RPi for one and half years. It is very good for its price. It has a builtin SAW (1090mhz filter)...

[abcd567]

That blue plastic disk is NOT required.
I put it as a platform for conveniently interchanging various DIY antennas I used to experiment with....

[abcd567]

Xavier:

Normally if you add Filtered LNA (like Uptronics one), then you will not need to add an extra filter. However in some cases where...

[abcd567]

If you are asking about the green AirNav dongle in the photo below, then YES you can use it with your Pi and dump1090. I have been using it successfully....

[abcd567]

Xavier:

You have GSM900 Cell/Mobile phone interference. Buy the Flightaware Dark Blue Filter. It will remove the 960 MHz interference...

[abcd567]

Yes, the wire collinear with coil are very sensetive to dimensions of coil Only 1 or 2 mm error in coil length or dia can make antenna poor. The first...

[abcd567]

VerteX:

Such problems are often caused by power supply.
The 5V dc power supply adaptor gone bad or of insufficient capacity. If you...

[abcd567]

No, it does not make any difference as the DVB-T dongle has input impedance of 75 ohms. The DVB-T is designed for TV reception, and the TV system uses...

[abcd567]

If you are using the magnetic base antenna supplied with DVB-T, you can improve reception by a very simple method: place antenna over a metallic plate...

[abcd567]

Try this almost zero cost "Do It Yourself" antenna

QUICK SPIDER - No Soldering, No Connector

EDIT:
You will...