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field, field, field and chang: 2S1A2090
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field, field, field and chang: 2S1A2092
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field, field, field and chang: 2S1A2093
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field, field, field and chang: 2S1A2094
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field, field, field and chang: 2S1A2095
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field, field, field and chang: 2S1A2096
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field, field, field and chang: 2S1A2097
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field, field, field and chang: 2S1A2098
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field, field, field and chang: 2S1A2099
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field, field, field and chang: 2S1A2100
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field, field, field and chang: Found at the old HF radio Network Operations Centre.
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field, field, field and chang: Detail from HF radio Network Operations Centre
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field, field, field and chang: 2S1A2103
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field, field, field and chang: Detail from obsolete HF radio equipment
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field, field, field and chang: OTC Doonside