[CW] Ship Radio Room clock

[D.J.J. Ring, Jr.]

Hans,

The radio clock WAS the crypto clock
>

Are you talking about a radio controlled clock or are you talking just
about the black face 24 hour Chelsea clock in the radio room?

Again, what type of clock did you need for crypto - you mentioned it had to
be quite accurate.  A radio controlled clock getting pulses from WWVB or
WWVL would be quite accurate, a radio room clock made by Chelsea even if it
was sent to WWV every watch was less so, it would still be within a second
of correct time if you checked it every watch.

What do you mean, Hans?

73
DR

On Sun, Jan 9, 2022 at 11:32 PM Hans Brakob <kzerohb at gmail.com> wrote:

> We’re talking about back in the 60’s.
>
>
>
> The radio clock WAS the crypto clock (we’re talking about old Gearing and
> Sumner class destroyers), and one of the watch-change “check-offs” was
> “Compared Clock to WWV”, or an explanation why not.
>
>
>
> *73, de Hans, KØHB*
>
> “Just a Boy and his Radio”™
>
>
>
>
>
> *From: *Richard Knoppow <1oldlens1 at ix.netcom.com>
> *Sent: *Monday, January 10, 2022 03:52
> *To: *cw at mailman.qth.net
> *Subject: *Re: [CW] Ship Radio Room clock
>
>
>
>     Different clocks for different purposes. The clock for crypto
>
> was probably an atomic clock or at least a crystal clock of some
>
> sort, while the radio room clock is a reference clock and does
>
> not require high precision. Same for navigation, I suspect atomic
>
> clocks have been used for decades, at least prior to satellite
>
> clocks which are virtually absolute.
>
>
>
> On 1/9/2022 4:58 PM, Hans Brakob wrote:
>
> > Maybe so in merchants, but military online crypto systems needed
>
> > precise time for synchronization with their partners.
>
> >
>
> > 73, de Hans, KØHB
>
> > “Just a Boy and his Radio”™
>
> > Master Chief Radioman, US Navy (Ret)
>
> >
>
> > -----------------------------------------------------------------
>
> > *From:* cw-bounces at mailman.qth.net <cw-bounces at mailman.qth.net>
>
> > on behalf of Richard Knoppow <1oldlens1 at ix.netcom.com>
>
> > *Sent:* Sunday, January 9, 2022 6:34 PM
>
> > *To:* cw at mailman.qth.net
>
> > *Subject:* Re: [CW] Ship Radio Room clock
>
> > Clocks used for navigation purposes must be as accurate as
>
> > possible but radio room clocks are not used for navigation, only
>
> > log keeping.
>
> >
>
> >
>
> >
>
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> > =30=
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>
>
> --
>
> Richard Knoppow
>
> 1oldlens1 at ix.netcom.com
>
> WB6KBL
>
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