Many "scanners" now go to that frequency e.g AOR AR-8600. (100kHz to 2GHz )
They are hardly state-of-the-art receivers but should be capable of
detecting jammers driving past. However a new unit is quite pricey $1000
equivalent in the UK as little as $300 for a used version. Also the AMSAT
FCD Pro+ USB SDR at $200 and free software.
Alan
G3NYK
----- Original Message -----
From: "Bob Camp" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Monday, October 07, 2013 12:36 PM
Subject: Re: [time-nuts] How hard is it to detect a GPS Jammer?
Hi
Anything that will receive up there should be able to tell you when a
jammer comes by. The issue is that not a lot of gear is made for that band
(other than GPS receivers). The easy approach would be to use a modern GPS
module that puts out noise level / jamming information.
Bob
On Oct 7, 2013, at 12:59 AM, Hal Murray <[email protected]> wrote:
The recent discussion of solar flares screwing up GPS timing was
interesting.
I just watched Todd Humphreys TED talk again. He's focused on location,
but
does mention time in terms of stock exchanges.
Todd Humphreys: How to fool a GPS
http://www.ted.com/talks/todd_humphreys_how_to_fool_a_gps.html
He's got a good discussion of GPS jammers and spoofers, but no geeky
details.
What's the spectral/power output of the typical eBay GPS jammer?
Suppose I lived near a major highway. Could I build a receiver that
would
count jammers driving by? Could I track them (at least somewhat) with a
directional antenna on a rotator?
Is this something semi-geeky amateurs could contribute to?
What sort of gear has harmonics in the GPS band?
------
I assume people are familiar with the trucker who jammed the FAA test in
NJ.
Here is a good story:
http://www.insidegnss.com/node/3676
That article has a link to commercial gear targeted at this market.
http://www.exelisinc.com/solutions/signalsentry/Pages/default.aspx
The graphics shows 3 receivers is a port/harbor setting.
--
These are my opinions. I hate spam.
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