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[aprssig] GPS Jamming On The Rise

Lloyd M. Mitchell lloyd at mitchell-web.net
Fri Jun 27 18:41:49 UTC 2008

If you're using a Garmin GPS V, I can jam it with my FM broadcast radio on 94.3MHz at 50 ft.  I imagine the IF freq's are mixing. Took me the longest to figure out why in the morning drive I could not get a fix, but the afternoon drive no problem (different stations morning and evening) of course this was pre-Sirus...

Lloyd KO4L

Become a CoCoRaHs Volunteer -   Report your local rainfall to the NWS  http://cocorahs.org     My homepage is http://tinyurl.com/bsyn9 

--- On Fri, 6/27/08, Stephen H. Smith <wa8lmf2 at aol.com> wrote:
From: Stephen H. Smith <wa8lmf2 at aol.com>
Subject: [aprssig] GPS Jamming On The Rise
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Date: Friday, June 27, 2008, 12:19 PM

Your APRS tracker could be getting trashed by the car next to you!

Linked from a post on Slashdot today at:

, this news story

While most of the post deals with military applications/threats, I 
thought this reference to domestic use of jammers was interesting:

"Meanwhile, several Internet sites offer small, localized GPS jammers 
for sale in the U.S. domestic market. These include a "GPS Blocker"
an advertised 10-meter to 20-meter range for roughly $200. "Just plug 
into a standard cigarette lighter with 12 V for power," says the web 
page, "and it will automatically protect you from any GPS tracking on 
and within your vehicle. This is a popular item with sales personnel and 
delivery drivers, who wish to take lunch or make a personal stop outside 
of their territory or route."



Stephen H. Smith    wa8lmf (at) aol.com
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