[ARC5] FCC General exam

[J. Forster]

That was LORAN-A.

LORAN-C at 100kHz was introduced about then. Last time I was playing with
LORAN-C it was good to better than 100', mainly due to better, uP
receivers.

-John

===================



> The LORAN I trained on in USAF Navigator School back in 61-62 was in the
> region of 160 meters.  A big problem with it was with receiving both
> ground wave AND sky wave signals at night.  Determining your position at
> night was problematical  However, it was really meant only for over water
> navigation. Accuracy of 10 miles or so while over the oceans was
> acceptable. There were other navigational aids once you got within 40
> miles or so of the coastlines.
>
>
>
> When the "new" LORAN around 100 kHz came in, the skywave problem is
> reputed to have virtually disappeared.  The new system was found to be
> useful over land and was expanded to have stations within the continental
> USA.  Fishermen on both salt and fresh water really bemoaned the
> discontinuance of the LORAN C becaue it was so accurate and repeatable!
>
>
> * * * * * * * * * * *
> * 73 - Mac, K2GKK/5 *
> * (Since 30 Nov 53) *
> * k2gkk hotmail com *
> * Oklahoma City, OK *
> * USAF & FAA (Ret.) *
> * * * * * * * * * * *
>
>
>
>
>> Date: Tue, 26 Nov 2013 21:34:01 +0000
>> From: mstangelo at comcast.net
>> To: wa5jci at flash.net
>> CC: arc5 at mailman.qth.net; k2gkk at hotmail.com
>> Subject: Re: [ARC5] FCC General exam
>>
>> The Russians had their our version of this system called Alpha. I wonder
>> if it is sill active?
>>
>> I was always fascinated with LF and VLF stations below 500kHz. My first
>> LF receiver was a BC-453.
>>
>> Mike N2MS
>> ----- Original Message -----
>> From: wa5jci at flash.net
>> To: mstangelo at comcast.net, D C _Mac_ Macdonald <k2gkk at hotmail.com>
>> Cc: ARC-5 Mail List <arc5 at mailman.qth.net>
>> Sent: Tue, 26 Nov 2013 21:28:25 -0000 (UTC)
>> Subject: Re: [ARC5] FCC General exam
>>
>> Then there was the Omega system used mainly for civilian aircraft and
>> ship navigation. We also used it for tracking our high altitude
>> research balloons.
>>
>> de Pete WA5JCI
>>
>>
>>
>> >The Navy still uses VLF transmitters to communicate with submarines.
>> >Using a loop antenna to eliminate local QRN I can pick up the
>> >Laulualei Hawaii station on 21.4 khz or the Jim Creek, Washington
>> >station on 24.8khz day or night.
>> >
>> >The Cutler, Maine station at 24khz is easy to pick up since it is
>> >close to my QTH in New Jersey.
>> >
>> >Mike N2MS
>
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