[time-nuts] WWVB and Free Democracies Survival

Mark Spencer mspencer12345 at yahoo.ca
Sun Jul 15 19:38:59 UTC 2012


GWEN was a  late cold war era LF "cellular style" communications system for use within parts of the USA.  Over the years I've seen a number of cesium standards on Ebay being sold as "ex GWEN" equipment.  As far as I know GWEN is long gone.

Supposedly some AM broadcast stations also transmitted fsk data for defence purposes as well.  Perhaps some AM broadcast stations could be used to transmit timing information.

There were also cold war era proposals for a nation wide LF broadcast system for civil defence use and iirc at least one transmitter was actually on the air in the 70's or early 80's.

As much as I'd like to see a nation wide LF broadcast system as a means of distributing standard time, frequency, and other related information, I just don't see it happening in this day and age. 

Some form of backup to gps would be nice for timing purposes.  I wonder if a secondary sattelite based system for timing use only over the continental US might be the way to go.  (Ie. a transmitter on a geo stationary sattelite that could emulate enough of the gps signals to allow statioanry timing receivers to function.)
    
------------------------------
On Sun, 15 Jul, 2012 2:09 PM EDT Tom Miller wrote:

>I believe many of the GWEN sites were converted to VLF beacons transmitting 
>differential GPS reference data.
>
>I know of one site in Crownsville, Maryland that does just that.
>
>I don't know the up to data status of these sites now.
>
>
>Regards,
>Tom
>
>
>
>----- Original Message ----- 
>From: "jmfranke" <jmfranke at cox.net>
>To: "Discussion of precise time and frequency measurement" 
><time-nuts at febo.com>
>Sent: Sunday, July 15, 2012 1:29 PM
>Subject: Re: [time-nuts] WWVB and Free Democracies Survival
>
>
>Was it GWEN (Ground Wave Emergency Network)? When it was shut down, many of
>the transmitter sites were scheduled to be used as part of an inland LORAN
>system run primarily for the railroads.
>
>John  WA4WDL
>
>--------------------------------------------------
>From: "Don Latham" <djl at montana.com>
>Sent: Sunday, July 15, 2012 12:53 PM
>To: "Discussion of precise time and frequency measurement"
><time-nuts at febo.com>
>Subject: Re: [time-nuts] WWVB and Free Democracies Survival
>
>>
>>
>> No you use a great number of tiny
>> overlapping cells combined with spread spectrum and strong encryption
>> and you control it with a some kind of self organizing mesh network,
>> not a top-down control system.   What this does is mimic nature.
>> Think about rats and cockroaches
>> Chris Albertson
>> Redondo Beach, California
>> There was (is?) a vlf system like this at one time, along with a buried
>> cable system, cold-war projects. Can't remember what they were called,
>> or present status.  These things are kinda lost these days, like the
>> original reason for the national interstate freeway system-transport of
>> truck-mounted ICBMs'--taken over by the ICBM subs...
>> Don
>>
>>
>> -- 
>> "Neither the voice of authority nor the weight of reason and argument
>> are as significant as experiment, for thence comes quiet to the mind."
>> R. Bacon
>> "If you don't know what it is, don't poke it."
>> Ghost in the Shell
>>
>>
>> Dr. Don Latham AJ7LL
>> Six Mile Systems LLP
>> 17850 Six Mile Road
>> POB 134
>> Huson, MT, 59846
>> VOX 406-626-4304
>> www.lightningforensics.com
>> www.sixmilesystems.com
>>
>>
>>
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>
>
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