GPS Tracker Antenna & Faraday cage effect

[meomem2023]

Hello,
After a recent bad experience due to my bike being stolen. I'm trying to install this GPS Tracker (S7 model) in my bike (S7 model) :

Inside :

I have install it here in the bike frame:

The problem is, that once the GPS tracker inside, it is impossible to catch ths GSM neither GPS signal. Very probabely due to Faraday cage effect.
Could someone help me to fix that ? can I for example connect the GND power to the bike frame, by coil rolling... or something like that to allow the GPS tracker to catch GSM & GPS signals ?.
Thank you by advance for your support

 

[BradtheRad]

Your images live at AllAboutCircuits.com which requires an account to view them.

Please put your images in a second post in this thread, using the Insert Image icon among the row of icons in the Reply window. It looks like the non-functioning diagram below:

 

[KlausST]

Hi,

We still can't see the pictures. Btw ".png" is no good picture format for fotos. Better use .jpg (low res, low quality setup). .png is good for screenshots of text or diagrams.....

Farady cage is farady cage. Connecting GND to the frame can't work.

It could work on a bicycle with carbon frame.
On metal frames you need to put tye antenna outside the frame. Maybe at the saddle.

Klaus

 

[meomem2023]

Hello,
After a recent bad experience due to my bike being stolen. I'm trying to install this GPS Tracker (S7 model) in my bike (S7 model) :

Inside :

I have install it here in the bike frame:

The problem is, that once the GPS tracker inside, it is impossible to catch ths GSM neither GPS signal. Very probabely due to Faraday cage effect.
Could someone help me to fix that ? can I for example connect the GND power to the bike frame, by coil rolling... or something like that to allow the GPS tracker to catch GSM & GPS signals ?.
Thank you by advance for your support

Sorry for the miss uploading pictures. I try this (I don't found how to update the initial post)

--- Updated Mar 2, 2023 ---

Hi,

We still can't see the pictures. Btw ".png" is no good picture format for fotos. Better use .jpg (low res, low quality setup). .png is good for screenshots of text or diagrams.....

Farady cage is farady cage. Connecting GND to the frame can't work.

It could work on a bicycle with carbon frame.
On metal frames you need to put tye antenna outside the frame. Maybe at the saddle.

Klaus

My bike is aluminum frame, did that have the same effect as metallic (magnetic sensitive) ?

 

[wwfeldman]

aluminum is metal, and not ferromagnetic
copper, which is also not ferromagnetic, is usually used for making faraday cages

maybe you can thread a small antenna wire up through the saddle mount?

or disconnect the gps antenna from the PWB, and thread its connections up through the saddle mount?

you might (?) mount it inside a wheel rim. the rubber tire should not hinder
either the gps signal or the signal to your tracker.

 

[vfone]

I am using the GPS tracker in the link below, hidden below the saddle. I made a holder, and I can put in place or remove it, in few seconds..

https://www.aliexpress.com/item/32957766441.html

But the best (and proved) antiteft solution, is to use a scrap bicycle

 

[meomem2023]

I am using the GPS tracker in the link below, hidden below the saddle. I made a holder, and I can put in place or remove it, in few seconds..

https://www.aliexpress.com/item/32957766441.html

But the best (and proved) antiteft solution, is to use a scrap bicycle

It's a solution, but I don't want to have a radiation source just under my as

Agree with scrap bicycle solution

 

[vfone]

In standby mode (when you ride the bike) is not transmitting anything.
When you leave the bicycle, you turn the device ON (don't need to remove the tracker from its place to turn it ON).
So, the thief will be radiated, not you..