| 31. | The signals station was protected by barbed wire and sentries and the pillbox was unoccupied.
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| 32. | It can be heard in the transmission of certain radio time signal stations . digital.
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| 33. | signal station in the sheltered bay below Low Head.
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| 34. | The tower commemorates the hill's use as a lookout and signal station during the revolution.
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| 35. | The signal station at Hammamet made a flag signal, " show your signal letters ".
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| 36. | In 1909 the pilot station at Bulwer was closed except for a remaining signal station.
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| 37. | They also sent out patrols to the outlying villages and hills and established signal stations.
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| 38. | Systems using dedicated time signal stations can achieve accuracy of a few tens of milliseconds.
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| 39. | McDonnell established a signal station there day and night, maintaining communication between troops and ships.
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| 40. | The men made it to their fort and the signal station fell into enemy hands.
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