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    Re: Chronometers after radio time signals
    From: Frank Reed
    Date: 2007 Oct 23, 22:26 -0400

    Gary, you wrote:
    "You may be forgetting that radio time signals are not always available
    everywhere all the time."
    Right, but even without a proper time signal, you still have the option of
    asking anyone who can hear... something like, "Calling all ships, can I get
    a check on GMT please?" Was there a Morse code shorthand for that whole
    question?? Back in the 19th century, "speaking other vessels" was a very
    common method of checking the longitude/GMT. But of course, the other vessel
    had to be in signalling range (maybe a quarter mile for messages written in
    chalk on a slate to be readable by telescope ?? a bit further when
    signalling flags became common ??). But with radio, suddenly you could speak
    to vessels half a world away.
    Clearly, chronometers were not suddenly replaced by cheap watches when radio
    first appeared aboard ship. But surely there was some effect on the market.
    If I could get a radio set (let's say c.1920) for the price of two
    chronometers, then maybe I could get by with one good chronometer and a
    couple of hack watches. Just wondering if anyone has any thoughts or better
    yet evidence. Perhaps looking at chronometer prices in almanac
    advertisements would yield some data.
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