[aprssig] GPS possible disruption SE US Jan 20 - Feb 22

[Lynn W. Deffenbaugh (Mr)]

But with a jammer, the receiver knows they don't have a fix and 
something's up.  I'm more thinking an experimental scrambler/offsetter 
that allows GPS receivers within the cone of influence to arrive at a 
solution based on the received signals and generate fix, but they really 
aren't at the location the fix describes.  And the GPS consumer won't 
know that they're being mis-lead (literally!).

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

mwbesemer at cox.net wrote:
> Nope... you're thinking about it from the wrong angle.
>
> Ever heard of a GPS Jammer?
>
> Mike
> WM4B
>
>
> On Thu, Jan 20, 2011 at 11:36 AM, Gregg Wonderly wrote:
>
>> It sounds like a transmitter at 40,000ft that might be a "relay" of 
>> existing GPS data.  Perhaps they are trying to figure out how to make 
>> GPS work on the ground in cities with tall buildings?
>>
>> Gregg
>> w5GGW
>>
>> On 1/20/2011 9:15 AM, Earl Needham wrote:
>>> I'm just wondering what they're doing that might disrupt GPS...
>>>
>>> Vy 7 3
>>> Earl
>>> KD5XB
>>>
>>> KD5XB -- Earl Needham http://groups.yahoo.com/group/cw_bugs Quoting 
>>> from the Coast Guard: ZUT Posted via Blackberry
>>>
>>> -----Original Message-----
>>> From: Steve Noskowicz<noskosteve at yahoo.com>
>>> Sender: aprssig-bounces at tapr.org
>>> Date: Thu, 20 Jan 2011 07:12:37
>>> To: TAPR APRS Mailing List<aprssig at tapr.org>
>>> Reply-To: TAPR APRS Mailing List<aprssig at tapr.org>
>>> Subject: Re: [aprssig] GPS possible disruption SE US Jan 20 - Feb 22
>>>
>>>
>>> --- On Lynn W. Deffenbaugh (Mr)  wrote:
>>>> ... I was looking for the coordinates that I could understand ...
>>>>   Lynn (D) - KJ4ERJ -
>>>
>>> -   -   -   -   -   -
>>>
>>> I often say that... "Can you explain that in terms I know?" (;-)
>>>
>>> 304906N = 30.4906 Deg North
>>>
>>> 0802811W = 80.2811 Deg West
>>>
>>> Google maps finds it A-OK.
>>>
>>> If you'd like it, I have an Excel spreadsheet that does conversions 
>>> between all forms of these.  That is:
>>> 1 - Degrees.decimal   (As shown above)
>>> 2 - Degrees,  Minutes.decimal
>>> 3 - Degrees,  Minutes,  Seconds.decimal
>>>
>>> Contact via my web site or MYCALL at arrl.net
>>>
>>>
>>
>>
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