homemade GPS jammer

gps_jammer_403.jpg
Today we are featuring an article from Phrack – an online hacker magazine. What we have is a do-it-yourself GPS jammer that can have a range of upto several hundred feet. Keep in mind this is not an easy hack – a bachelors in electrical engineering seems like a prerequisite.

The GPS band pass filter is a 2-pole Toko 4DFA-1575B-12 ceramic dielectric filter from Digi-Key[4], part number TKS2609CT-ND. This part is optional, but helps clean up the RF spectrum before further amplification. The filter’s insertion loss is around 2 dB.

The final RF amplifier is a WJ Communications AH102. It provides another 13 dB of gain, with a higher P1dB compression point of around +27 dBm (500 mW). The AH102 draws the most current of any part, and is not really necessary if you’re aiming for a low range, low current, battery operated device.

This hack is designed to be a low cost one, only using components you can easily find at a trip to Radio Shack. It targets the Global Positioning System (GPS/NAVSTAR) L1 frequency of 1575.42 MHz. Also keep in mind this device will not work against the Russian GLONASS or European Galileo systems.

10 Responses to “homemade GPS jammer”

  1. maximojo Says:

    any way to get the full schematic? thaks


  2. Guillermo Says:

    Priceo of jammer


  3. OUF ! ON VA POUVOIR ÉCHAPPER AU FLICAGE ! « Libertes & Internets Says:

    [...] 20 novembre 2007 OUF ! ON VA POUVOIR ÉCHAPPER AU FLICAGE ! Posted by libertesinternets under Privacy, Surveillance, Téléphones GPS, Vie privée   Si vous êtes du genre bricoleur, vous pouvez aussi fabriquer un brouilleur vous-même. Navigadget vous explique comment faire :  http://www.navigadget.com/index.php/2007/01/29/homemade-gps-jammer/ [...]


  4. Jenny Says:

    My daughter is being stocked by an ex boy friend & I want to know is there a way to find out if her car has a GPS device on it. I would great appreciate your assistance.

    Thank you,

    Jenny


  5. nabil Says:

    very nice stuff
    i will try some of it after finishing my exams


  6. Ottopalla - Un blog che… vi stupirà! » Blog Archive » GPS Jammer - Come bloccare il segnale GPS Says:

    [...] Costruite il proprio GPS Jammer andando qui (guida in [...]


  7. Rob Says:

    Jenny,

    If your daughters car is being tracked, the GPS/transmission device will have to transmit a signal from the car. You will need to something to detect and pinpoint the location of the transmission unit.


  8. GPS Jammer Says:

    GPS Jammers work well for reps who enjoy taking their lunch outside of their territory. Or just for those that feel their personal time should not be monitored….they’re not that expensive anymore, but building one might be a lot more fun.


  9. scott Says:

    can a gps jammer and a gps navigator (garmin Nuvi) be used at the same time. I want to use my garmin, but not be tracked.


  10. musco2 Says:

    get me full version schemaaaa…


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