The reason was that the "galloping horses" (actually Loran-A)
were confined to 1950 kHz in the North Atlantic area which
included Eastern seaboard USA.
The Pacific area got the 1850 kHz channel.
There were odd exceptions (like the short-lived
Sky-Wave Synchronised Loran chain over Europe
in 1945 that used 1900 kHz) but not many.
For the full story read "The Memoirs of Dr J A Pierce"
Jack pretty well invented the Loran-A system and was
a good friend of mine until he died in 1991.
MIT Radiation Lab Series Vol 4 ("Loran") also has
a good resume and describes the early attempts
at low-frequency Loran that was resurrected in
1957 to become Loran-C.
----- Original Message -----
From: "Les Thompson" <[email protected]>
To: <[email protected]>
Sent: Friday, March 10, 2006 9:58 AM
Subject: Re: LF: galloping horses
In article <[email protected]>, Peter Dodd
<[email protected]> writes
[email protected] wrote:
Hear Hear,,,, true I remember as a lad in the late 50s that the effect
noted as Galloping Horses,,,, The 160 meter band was useless
I worked W1BB several times from 9L1 on the low end of 160m in 1964. How
did he manage it?
I have a vague memory that Stew had an arrangement with the US Coast
Guard to allow him a noise free slot for some of his record attempts.
Could be an urban myth though but it's going to bug me now until I
have a read through my old RSGB Bulls.
Les G8ARF / G3VYZ / RSARS 173