Re: [time-nuts] Detecting GPS and other jammers

2013-10-07 Thread Jim Lux

On 10/7/13 6:49 PM, John C. Westmoreland, P.E. wrote:

Bob,

I think what you have pointed out is interesting - I have even given it
more than a passing thought on how to design what is on the CellBusted site.

I am working on a design of my own on how to detect low-power RF signals
using a wide-band method of detection.



There is a significant amount of information in the open literature on this.

A lot of hints can also be gleaned by looking at applications notes and 
spec sheets from companies like Watkins-Johnson, who made 
interferometric DF systems for sigint applications


The radio astronomers also do a lot with beamforming multiple antennas 
using correlators.


A total power radiometer (aka crystal video) is going to have a tough 
time in this sort of environment, unless you use very long averaging 
intervals and do some strong signal excision


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Re: [time-nuts] Detecting GPS and other jammers

2013-10-07 Thread John C. Westmoreland, P.E.
Bob,

I think what you have pointed out is interesting - I have even given it
more than a passing thought on how to design what is on the CellBusted site.

I am working on a design of my own on how to detect low-power RF signals
using a wide-band method of detection.

73's,
John Westmoreland
AJ6BC



On Mon, Oct 7, 2013 at 10:31 AM, Bob Burchett EE <
bob.burch...@eeontheweb.com> wrote:

> We make & sell the jammer detectors as a part of our contraband cell phone
> detector products. The jammers are so common now flooding in that we have a
> stealth GPS tracker so that drivers of company trucks that have radios in
> them aren't aware of the fact that they are being monitored BUT if they
> find
> out we also sell the detectors. They aren't expensive either.
> www.CellBusted.com
>
>
> Robert L. "Bob" Burchett WB6SLC
> Certified Communications Engineer
> Enterprise Electronics
> 22826 Mariposa Ave.
> Torrance CA 90502
> Direct line: 310.534.4456
> FAX: 310.534.1233
> Website: www.EEonTheWeb.com
>
>
>
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> time-nuts mailing list -- time-nuts@febo.com
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[time-nuts] Detecting GPS and other jammers

2013-10-07 Thread Bob Burchett EE
We make & sell the jammer detectors as a part of our contraband cell phone
detector products. The jammers are so common now flooding in that we have a
stealth GPS tracker so that drivers of company trucks that have radios in
them aren't aware of the fact that they are being monitored BUT if they find
out we also sell the detectors. They aren't expensive either.
www.CellBusted.com 


Robert L. "Bob" Burchett WB6SLC
Certified Communications Engineer
Enterprise Electronics
22826 Mariposa Ave. 
Torrance CA 90502
Direct line: 310.534.4456
FAX: 310.534.1233
Website: www.EEonTheWeb.com



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