# Low cost GPS jammer

- Author: Joichi Ito
- Date: 2002-12-29T12:59:23Z


This may not help Sadaam, but just in case you're put under GPS surveillance house arrest by an oppressive government, you'll need to learn how to build your own GPS jammer.phrack  A low cost device to temporarily disable the reception of the civilian
course acquisition (C/A) code used for the standard positioning service
(SPS)[1] on the Global Positioning System (GPS/NAVSTAR) L1 frequency of
1575.42 MHz.

  This is accomplished by transmitting a narrowband Gaussian noise signal,
with a deviation of +/- 1.023 MHz, on the L1 GPS frequency itself.  This
technique is a little more complicated than a simple continuous wave (CW)
jammer, but tends to be more effective (i.e. harder to filter) against
spread spectrum based radio receivers.





---

#### Categories

Gadgets