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Date: Wed, 27 Oct 1999 17:44:11 -0000 ()
From: "John Rabson" <word.factory@zetnet.co.uk>
To: rsgb_lf_group@blacksheep.org
Subject: RE: LF: Re: Musing on the data on CFH, and some seagoing observa
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In 1961 a retired RO told me of the night when his ship was about to enter
port in Alaska.  He called the Alaskan coast station on 500 but was answered by
a station in New Zealand.

73 de G3PAI

On 27-Oct-99 Hans-Joachim Brandt wrote:
> Dear all,
> 
> the remarks of Mike, ZL4OL, reminds me of my two years as a wireless
> operator on 
> a german freighter in the years 1956-58:
> 
> At that time, a lot of vessels crossing the pacific from New Zealand and 
> Australia to the U.S. and Canada had been equipped with medium wave
> equipment 
> only (410 - 512 kHz). Shortwave was not needed, because several thousend sea
> miles could be covered at night dependably employing the medium wave 
> transmitter, with a power of a few hundred watts, and typical T or inverted
> L 
> wire antennas. Even engaged operators who had HF available liked to do all 
> communication on medium waves at night.
> 
> When crossing the atlantic westbound, from Europe, the coastal radio 
> transmitters of Chatham Radio, WCC (30-40 kW), and Amaganset Radio, WSL (15
> kW), 
> both in the New York area, could be heard on 500 kHz from about 30 degrees
> west, 
> but ships still had to employ 8 MHz HF to work these stations. Therefore it 
> appears that LF/MF conditions over the atlantic are not so favourable.
> 
> Furthermore, operators at the german coastal radio station Norddeich Radio,
> DAN, 
> located in the outmost northwestern corner of germany, north of Emden, could
> hear WCC and WSL sometimes, but not regularly, during very cold winter
> nights. 
> Perhaps it would be interesting to ask former operators of U.K. coastal
> radio 
> stations, especially Landsend Radio, GLD, and former colleagues of EI0CF at 
> Malin Head Radio, EJM, and of Valentia Radio, EJK, if they were able to 
> contribute to these observations.
> 
> HW?
> 
> 73 Ha-Jo, DJ1ZB
> 
> ComPact schrieb:
>> Hello all
>> It's been interesting following the discussion on the possibility of
>> crossing the Atlantic with amateur LF signals. Although the frequency is
>> much higher it may be relevant to mention that several stations in ZL are
>> getting consistent reception of the Galveston Texas NDB on 206 kHz. This is
>> reported as a 2kW beacon which presumably means there wouldn't be more than
>> 500 watts or so in each sideband. Distance is about 12500 km and signals
>> peak just before Galveston sunrise. I don't have any data on GLS's antenna
>> but if it's anything like most NDB's would not be hugely efficient.
>> Mike ZL4OL
>>
> 
> 

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E-Mail: John Rabson <word.factory@zetnet.co.uk>
Date: 27-Oct-99
Time: 17:38:48

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