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

[Eric Hansen]

Lynn, what you are describing is known as Spoofing, and is fairly common in
combat theaters.

On Thu, Jan 20, 2011 at 12:03 PM, Lynn W. Deffenbaugh (Mr) <
ldeffenb at homeside.to> wrote:

> 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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>>
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>
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