| 31. | It also used radio direction finding to maintain course.
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| 32. | Stations were equipped with short wave direction finding sets.
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| 33. | She was equipped with direction finding equipment and radio.
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| 34. | The secretary of the Tizard Committee, Radio Direction Finding.
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| 35. | No requests were made for VHF direction finding.
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| 36. | The KFRR organizes and supports Amateur Radio Direction Finding competitions and the Kazakhstan national ARDF team.
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| 37. | Traditional radio direction finding used a loop antenna.
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| 38. | She had three passenger decks, and by 1931 she was equipped with a direction finding device.
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| 39. | He learned about radio direction finding vehicles in Italy and managed to get some to Finland.
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| 40. | Six new direction finding stations were installed as part of these improvements, including one at Lympne.
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