[Towertalk] re; Propagation Angles

[Guy Olinger, K2AV]

Thank you. Thank you. Thank you. (A big lead to running down some
beef, aged though it may be.)

I have three big university libraries around here to hassle.
University of North Carolina at Chapel Hill, Duke University, and
North Carolina State University. I have an immediate family member
that's an alum at each one so I can finagle services. We'll see how I
do. It really helps to have a specific item in mind when you go to the
desk.

This is the first specific information I have come across on this.
Certainly the first bibliography. And the dates suggest why I've been
having trouble.

61 89 79 ? 54 57 58 64 72 58 66 70

The majority of this work predates the general availability of the
transistor, not really a complaint, but would certainly limit the
methods available for measuring and recording devices, and the kind of
computer resources (if any) available for graphic analysis. You
suggest that much depends on the 61 Utlaut work.

Part of my problem apparently has been expecting something recent and
expansive, given the propagation models that are out.

73, Guy.

----- Original Message -----
From: "Peter Forbes" <prforbes@bigpond.net.au>
To: <towertalk@contesting.com>
Sent: Tuesday, June 25, 2002 3:05 AM
Subject: [Towertalk] re; Propagation Angles


> Guy Olinger K2AV asked where the experimental data is.
>
> The foillowing is a short list of Journal articles that go some way
towards
> answering your question.  Any decent University Library should be
have
> access to most of the journals or be able to access them by
inter-library
> loan.
> .
>
> 1.  "Effect of Antenna Radiation Angles Upon HF Radio Signals
Propagated
> Over
>       Long Distances"  W F Utlaut
>       Journal of Research of the National Bureau of  Standards - D.
Radio
> Propagation  Vol 65D, No 2, March -
>       April 1961, pp 167
>
> 2. "Pulse transit times and waveform observations for ionosheric
propagation
>     between England and Australia  ( authors including Jack VK3SP)"
>     Journal of Atmospheric and Terrestial Physics Vol 54, No 4 pp
> 291-295,1989
>
> 3.  "On the propagation of short waves over very long distances"  K
J
> Hortenbach   & F Rogler
>     Telecommunications Journal  Vol 46 - VI/1979
>
> 4.  "A test of the importance of Ionosphere-Ionosphere Reflections
in Long
>      Distance and Around the World High Frequency Propagation" R B
Fenwick &
> O G Villard
>      Journal of Geophysical Research Vol 68, No 20  pp 5659
>
> 5.  "Further Studies on the Chordal-Hop Theory of Ionospheric
Long-Range
>      Propagation"  Hans Albrecht
>      Archiv Fur Meteorolgie Band II, series A pp 84-92, 1954
>      {The first person to work on chordal hop ideas, whilst being an
> observer
>       for Deutsche Welle in Melbourne Australia 1952-1954)
>
> 6.   "Long Distance Ionospheric Propagation without Intermediate
Ground
>       Reflection"
>       Report 250 - 6   ITU Conference 1986  (CCIR Study Programme
25D/6)
>
> 7.   "Investigations on Great Circle Propagation between East
Australia and
> Western Europe"  H J Albrecht
>       Geophysica Pura e Applicata, Vol 38, 1957 pp169
>
> 8.   "Propagation Studies on 3.5 and 7 Mcs"  H J Albrecht
>        Amateur Radio, Journal of the Wireless Institute of
Australia, Vol
> 21, No5, 1953 and Vol 24, No 10, 1956
>
> 9.   "The Role of Layer Tilts in ionospheric Radio Propagation"  S
Stein
>       Journal of Geophysical Research, Vol 63, No 1 , 1958  pp 217
>
> 10.  "An Experimental Investigation of Signal Strength in the area
Around a
> Transmitter's Antipode"  RM Pipp
>         & J B Webster
>        Radio Science Journal of Research NBS/USNC-URSI,  Vol 68D, No
3,
> March 1964, pp 333
>
> 11.  "The Influence of Chordal Paths on signals Propagating to the
Near
> Antipode of an HF Radio Transmitter"
>         Gary E J Bold
>         IEEE Transactions on Antenna and Propagation, Nov 1972, pp
741
>
> 12.  "A Long Distance Pulse Propagation Experiment on 20.1
megacycle"  R
> Silberstein
>        Journal of Geophysical Research, (1958),  pp 445
>
> 13.  "The Angular Spread of Radio Waves in Long Distance Ionospheric
> Propagation"  H A Whale
>        Radio Science, Vol 1 (New series) No 7, July 1966  pp 743
>
> 14.  "Low-angle Radiation"  L A Moxon   Wireless World, April 1970,
pp155
>
> In each of these articles, there are further references.
>
> By far the most commonly quoted reference (mentioned in ARRL and
RSGB
> publications) is the Utlaut article which measured angles of arrival
between
> Boulder CO and Munich, Germany.
>
> In keeping with what Tom N4KG has recently written about summer
propagation,
> Utlaut's section 4.1 on Diurnal and Seasonal trends makes for
interesting
> contemplation.
>
> Its also well worth reading the series of articles by Bob Brown NM7M
in the
> DX Magazine on aspects of propagation, which gives an amateur's
perspective
> on things.
>
>
> Cheers
>
> Peter Forbes   VK3QI
>
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