| 41. | Wireless ( radio ) technology greatly improved during the period and direction finding sets were used.
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| 42. | The fighters also attacked German ships in Kaafjord and a radio or radio direction finding station.
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| 43. | They also participated in calibrating airborne direction finding.
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| 44. | Roland Keen, author of " Wireless Direction Finding ", was the officer in charge of engineering.
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| 45. | The Germans considered that the technical problems of seaborne radio direction finding could not be adequately solved.
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| 46. | She was fitted with direction finding equipment.
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| 47. | She also had wireless direction finding equipment,
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| 48. | Direction finding confirmed they had turned around.
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| 49. | The site included two direction finding antennas.
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| 50. | Station CFV was part of the SUPRAD ( Supplementary Radio ) network of intercept and direction finding stations.
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