Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Threats to GPS and introduction of eLORAN
    From: Francis Upchurch
    Date: 2016 Jan 28, 23:14 -0800

    One obsolete electronic sytem which could give you a "rough" fix off Dover in Fog was the old low frequency RDF, long since deceased. However, last year I managed to pick up with my still functional 1980s RDF, a few Non Directional Beacons (NDBs) still broadcasting from airfields in my sailing area,i.e. Scillies, Caldrose, Newquay, Brest, and a Long Wave radio station in Ireland. I managed a few 3 body "fixes" to within a mile or so on land, but illness beached me last summer, so I was hoping to try it out at sea this coming season. However, I have heard the sad news that most airfield NDBs are or soon will be, closing down, presumably permanently. Maybe I'll stick a long wave (say about 250KHz) transmitter on my house roof. Should give me a bearing home!

    Anyone yet thought of ways to make a phone app that could find position just from a photograph of the night sky if you (and the phone) has correct GMT? Would that be theoretically possible?

    These nightmare "bad guys" scenarios I don't really worry about. Fog, storms, being hit by ships, yes.

    For me, worse than GPS jamming would be loss of the Navlist soul food via navlist email! Without my daily "fix" of Navlist discussions from you guys, I surely would be lost! May the Bad Guys not hack our Navlist please!

    Best wishes

    Francis

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site