[Milsurplus] Fwd: US Navy Returning To CW Training

[Ray Fantini]

We are all dependent on GPS more than most can imagine.  The majority of cell systems derive their reference from GPS, the sites not the phones. If they have a drop in signal it's only a matter of days or hours before they start to drift off frequency and in modern digital communications exact frequency control is critical to the network. Also GPS provides timing information for billing. GPS is now the favorite for providing time and frequency references, the Rubidium Standards are getting far and fue between compared to everything that's deriving its reference from GPS, so it not just navigation. 
Wonder about the Iranian thing, no easy task to mask over GPS downlink, would have to be something like the old Tropo Scatter operation and involve bouncing massive amounts of energy off the ionosphere to get the antenna to see it.

RF





---Original Message-----
From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Gene Smar
Sent: Tuesday, February 09, 2016 10:43 AM
To: kgordon2006 at frontier.com; Milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] Fwd: US Navy Returning To CW Training

Recent news article claims that the Iranian Navy spoofed GPS sigs and lured our two vessels into their territorial waters prior to capture.  DOD has not confirmed or denied the report.
 
 
73 de
Gene Smar  AD3F

 
 


On 02/08/16, Kenneth G. Gordon wrote:

On 8 Feb 2016 at 19:36, Bruce Gentry wrote:

> Depending too much on GPS and
> satellite communications is not wise.


OHHHHHHHHHHH, yes!!! And the devil internet and the damned computers too...

Some time ago, I read a report from, as I recall it, the Army in which some high-muckety-muck expressed considerable deep concern that the Army is so dependent on computerized this and that that it appears to be completely unable to function if/when those computers, etc., go down.

Ken W7EKB, an IT Professional since about 1970.
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