[CW] Question about marine radiograms

D.J.J. Ring, Jr. n1ea at arrl.net
Sun Nov 11 02:31:10 EST 2018


Ship telegrams were about 40 cents a word, 8 cents ship station cost
(master and radio officer were exempt) and 7.75 cents per word for USA.
Sometimes landline costs could be $1.50 a word for distant locations.

Let's move off this, we reinvented the spark gap.

73

DR

On Sun, Nov 11, 2018, 02:02 Richard Knoppow <1oldlens1 at ix.netcom.com wrote:

>     Yes, that is made clear in the section. The press
> transmissions were for subscribers and was so noted in the
> announcement. I only ever heard the signal used by KPH, KFS, WCC,
> WSL, who sent the same press used CQ. I don't remember the exact
> announcement they used but the material transmitted was identical.
>     I wrote the note because I had seen the definition somewhere
> and couldn't remember where or find it again. I stumbled on it
> when looking for something else.
>     I listened to the press transmissions almost every night as
> practice. Lots of machine sent code and interesting material.
> Sent at about 25WPM which was pushing my speed at the time.
>     I've tried to calculate what a radiogram would have cost. I
> have RCA charges for 1950 but not the WU charges that would have
> been added plus they probably varied with the destination. I came
> out with about $3.00 for a typical ten word plain language
> radiogram. That would be about $30.00 in current money, not cheap.
>
> On 11/10/2018 9:56 PM, D.J.J. Ring, Jr. wrote:
> > CP is a restricted call, instead of general call (CQ) to ALL
> > stations.
> >
> > CP KESO WAUS
> >
> > KESO Was All ESSO ships, WAUS was all USA ships.
> >
> > CP was used for PX (Press) because it was directed to subscribers.
> >
> > CQ was used for traffic lists, and WX (Weather) because they were
> > addressed to ALL stations. Also TTT, XXX and SOS were addressed
> > to CQ.
> >
> > TTT is Safety (Notices to Mariners), XXX Urgent (Medical,
> > Tornado, Man Overboard), SOS, (Distress.)  Usually addressed to CQ.
> >
> > 73
> >
> > DR
> >
> > On Sat, Nov 10, 2018, 22:40 Richard Knoppow
> > <1oldlens1 at ix.netcom.com <mailto:1oldlens1 at ix.netcom.com> wrote:
> >
> >           Not to beat a dead horse but I found the reference to the
> >     call CP. This was used by KPH for press transmissions, I never
> >     heard it anywhere else. My source is "The Radio Manual" 4th
> >     edition, Sterling and Monroe 1950 (New York) D. Van Nostrand Co.
> >     p.843  This is an excerpt from the International Communications
> >     Conference, 1947. Article 32: "Call to Several Stations Without
> >     Regard to Reply. The call CP followed by two or more call signs
> >     or by a code word (call to certain receiving stations without
> >     request for a reply) is used only for the transmission of
> >     information of any nature intended to be read or used by by the
> >     persons authorized."
> >           This may well predate the 1947 conference but I can't find
> >     text of the the earlier telecommunications conferences except
> >     for
> >     a couple of the very earliest ones.
> >           Mainly I had been curious where I got this and stumbled on
> >     it while looking something else up. Genuine trivia.
> >
> >     On 11/6/2018 3:03 PM, D.J.J. Ring, Jr. wrote:
> >
> >
> >     --
> >     Richard Knoppow
> >     1oldlens1 at ix.netcom.com <mailto:1oldlens1 at ix.netcom.com>
> >     WB6KBL
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> --
> Richard Knoppow
> 1oldlens1 at ix.netcom.com
> WB6KBL
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