Measurements of UK Decca's and some other stations :
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Day ------------------ 20Feb 21Feb 22Feb 23Feb 24Feb
Sun Mon Tue Wed Thu
Time, UTC ------------ 2140- 2150- 2140- 2140- 2150-
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kHz Ch *d,km AZI* *Indicated ESH2 input, dBmW*
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127.8 (6C), 1435, 280, -106 -109 -104 -106 -113
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126.7 (2A), 1565, 269, -110 -105 -103 -103 -111
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128.5 (8E), 1766, 276, -116 -107 -103 -102 -111
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127.0 (3B), 1871, 257, -111 -111 -105 -105 -110
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127.5 (5B), 1890, 247, -104 -107 -107 -105 -107
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128.2 (7D), 2060, 267, -121 -120 -113 -112 -121
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126.4 (1B), 2282, 253, QRM -112 -120 -115 -119
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kHz Ch *d,km AZI* *Indicated ESH2 input, dBmW*
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128.93 ref, 1553, 228, -80 -79 -93 -81 -83
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138.83 ref 1221, 226, -86 -78 -87 -81 -86
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135.8 SXV 2490, 182, -106 -108 -111 -107 -105
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137.0 CFH* 5750, 295, Nil -124 -127 Nil -126
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* CFH moderately strong on the 21st, broad peak 2120-2150
(*Record* observed *S* of CFH: 13Feb, 2208z = 119 dBuW)
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Note: NOISE LEVEL SEEMS TO VARY ALSO WITH SOLAR ACTIVITY,
this is not anything new, observations continue.(!)
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20Feb 1822: OG5UFO -103
20Feb 1920: OH7OL -128
20Feb 2121: OK1BS -110
20Feb 2152: OH3LYG -102
21Feb 1959: MM0ALM -121; 2014: -125; 2125: -124
21Feb 2014: OH1BS -110; 2202: -105
21Feb 2135: OG5UFO -107
22Feb 1722: OH1BS -109; 2050: -107
22Feb 1722: MM0ALM -124
22Feb 2038: G3KEV -122; 2125: -127
22Feb 2037: OH7OL -127; 2046: -126
22Feb 2043: OZ8NJ -127
22Feb 2053: OG5UFO -108..-106
23Feb 2009: OH7OL -120; 2013: -118
23Feb 2011: G3KEV -128: 2025: -125; 2034: -123
23Feb 2045: OG5UFO -105; 2055: -107: 2108: -110..-108
23Feb 2155: OZ1KMR -123
23Feb 2156: OH1BS -107
23Feb 2200: OH1XF -115
23Feb 2202: MM0ALM -120
24Feb 1730: OH1BS -108; 2001: -107; 2150: -112..-107(f)
24Feb 1730: OH1LT -125: 2021: -123
24Feb 1935: G3KEV -130; 2212: -130
24Feb 2001: OH1XF -115; 2021: -115
24Feb 2126: OG5UFO -119..-112(f); 2150: -115(f)
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(R&S ESH2/---- 10m coax---/1:10/---15m wire-----):
Noise level with antenna: with 200Hz IF BandWidth:
-25..-22 dB(uV), -132..-129dBmW (varies w qrm etc)
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End of message of 25 Feb 2000, 0800 UTC, from OH2LX
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V.K.Lehtoranta, OH2LX, POBox 50, FIN-05401 Jokela, Finland
------ Tel: +358-9-4173965 ---- Fax: +358-9-4173961 ------
E-mail: [email protected] - alias: [email protected] & [email protected]
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