Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Re: Timekeeping in the post-WWV/post-HF world
    From: Robert VanderPol II
    Date: 2018 Sep 25, 17:49 -0700

    Have you looked into Chip Scale Atomic Clocks?  Somebody mentioned $1500 but I don't know for sure.  Don't know what the power requirements would be either.

    Re: Timekeeping in the post-WWV/post-HF world
    From: Steve Dunlop
    Date: 2018 Sep 25, 08:48 -0700


    I'm looking for a self-contained time reference to use in the event of a loss of GPS.  I am presuming a boat that is not equipped with HF gear, because of the obsolescence of the shore stations on which it depends.

    My real question is: what is reasonable, and is the standard answer of three Timexes really the best we can do?

    I get it on the constant error rate.  I'm not sure that the error rate of the average cheap digital watch is as constant as is widely believed particularly when the watches are not stored at a constant temperature.  That approach requires regular checks.  Maybe having a ship's clock and a HAQ watch that are both accurate enough to use without rating would be a better answer given that they are available, compact, and low cost.  I'm thinkout out loud, I guess.

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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