Northern Star Media Services AS.
1. Bölgeforplantning på lang-og mellombölge(Long-and Mediumwave propagation)
1/1974, in Norwegian)
Some of the themes:
Field Strength curve 1 10 kHz-10 mHz
Field Strength curve 2 for 10 kHz-10 mHz
Wavefronts for two frequencies
Older version of Ground Conductivity map for Norway
Field strength curves for 700 kHz
Field strength curves for 200 kHz
Ground-Wave propagation for different values on 210 kHz ITU 717-2
The Eckersley method
The Millington method
The Millington method-transfer for good to bad conductivity
The Millington method-transfer for bad to good conductivity
Resulting curve for multi-hops
Field strength curves for skywave propagation
Correction curve for magnetic dip and Correction curve for time deviation from midnight
Special treat for dxers: Ionospheric wave propagation for MW at distances greater than 3000 kms. Tests 1936-1937 and in the 1960s including many well-known stations:
BBC Lisnagarvey, Radio El Mundo BA, KDKA Pittsburgh, ERT Batra, Radio Senegal, RAI Roma, CBA Sackville, VOA Poro, Radio Americas, Kuwait, TWR Bonaire, AFRS Asmara(KANU) Conacry, BR Ismaning
Special treat for dxers: Sky-wave field strengths. ITU 431-5
Many of same stations plus CBA Moncton, ORTF Martinique, VOA Ban Pachi, TDF Allouis
Coverage with different power levels
3/22 Sea Gain. ITU 435-7 A single terminal at the coast, LW/MW
New Field strength curves for 200 kHz
(Telecommunication Journal 42/III 1975.)
(Teleelektronikk 4/1977, in Norwegian)
Some of the themes:
Conductivity with different types of ground
Examples of The Millington method+ Sea Gain. ITU 435-7 same as page 23 above, but in Norwegian
(Telecommunication Journal 51/II 1984.)
How the signal of LKO Oslo Kringkaster/Klöfta 200kW was improved.
AS used processing on AM since the 70s and at LKA Vigra employed one Orban Optimod-AM
6.Concerning the proposed high-powered AM transmitter in Norway.
To US Consultant in Virginia for Northern Star, 2002
The expected signal strength over the UK from Radio Northern Star.
Point A=English Channel, B=NW Wales, C=SW Scotland,
D=N Scotland, E=Metro London, F=Midlands, G=Metro Dublin, H=Borders
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