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Teltonika FMA204 GPS Tracker Signal Jammer

Teltonika FMA204 GPS tracker jammer

Good morning,

I am contacting you because I am afraid of making a mistake in my choice, I would like to block the gps installed in the car on a part-time basis.

Attached photo of the technical sheet of the device.

Can you please advise me on the choice of device to use.

I note here the frequency in case the photo is not good enough: gprs 120 mA r.m.s

If this is of no use to you, the device in question and an Ocean gps from orange.


Thank you for your email. Through your photo attached, we found more information about this GPS Tracker information as follows:

1. Teltonika FMA204 GPS Tracker@oceansystems:

2. FMA204 is a terminal with GPS and GSM connectivity, which is able to determine the object’s coordinates and transfer them via the GSM network.

SMS Configuration
GPRS commands Configuration
Time Synchronization GPS

Name TM2500
Technology GSM/GPRS+GPS

Technology GSM
2G bands Quad-band 850 / 900 / 1800 / 1900 MHz
Data transfer GPRS Multi-Slot Class 12 (up to 240 kbps), GPRS Mobile Station Class B
Data support SMS (text/data)

Let’s analyze all the signals used by this GPS Tracker:

1. GSM (Groupe Special Mobile) – Global System for Mobile communications – most popular standard for mobile phones in the world.
GSM 900 / GSM 1800 MHz are used in most parts of the world: Europe, Asia, Australia, Middle East, Africa.
GSM 850 / GSM 1900 MHz are used in the United States, Canada, Mexico and most countries of S. America.

2. GPS Frequencies?
This GPS satellite transmits data on two frequencies, GPS L1 (1575.42 Mhz) and GPS L2 (1227.60 MHz).

So if you are in Europe or the UK, you need to block at least these four signals at the same time:

GSM 900 / GSM 1800 / GPS L1 (1575.42 Mhz) / GPS L2 (1227.60 MHz)

Similarly, in the United States or the Americas, you need to block at least these four signals at the same time:

GSM 850 / GSM 1900 / GPS L1 (1575.42 Mhz) / GPS L2 (1227.60 MHz)

Here are some suitable GSM GPS L1 GPS L2 jammers recommended:

1. 2G/GSM/GPS L1 GPS L2 Jammer:

4 Bands Portable Handheld 2G 3G & GPS Tracker Signal Jammer

2. 2G/GSM/3G/4G/LOJACK/GPS L1 GPS L2 Jammer:

8 Bands Portable Handheld Cell Phone 2G 3G 4G & WiFi / Bluetooth & GPS & LoJack Signal Jammer