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: NIST website time accuracy
    From: Douglas Denny
    Date: 2010 Aug 5, 12:45 -0700


    The BBC on "analogue" radio (audio or frequency modulation) is unreliable too for its time pips.

    The transmitters receive feeds from telephone lines and there is unknown variable delay involved there too as they are packet multiplexed systems from node to node. They are supposed to be within a few milliseconds - but I wouldn't trust them if I really needed accuracy.

    The dissemination of time standards is a difficult and prickly subject. I still think the only simple way is to receive the signals from pukka time standard stations like WWV and RUM an a shortwave receiver - or for ultimately accurate availability use a proper GPS time standards receiver designed for the purpose.

    Douglas Denny.
    Chichester. England.
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    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