[CW] Question about marine radiograms

[Richard Knoppow]

    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