Radio transmission into buildings at 35 and 150 mc /

Investigations of radio propagation at 35 and 150 mc into large city buildings have disclosed that, on the average, a loss in the order of 20 to 25 db may be encountered on the first floor. This loss, which represents the reduction from the median field in the city streets at the same distance from...

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Autor principal: 331612 Rice, L. P.
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author 331612 Rice, L. P.
author_facet 331612 Rice, L. P.
author_sort 331612 Rice, L. P.
collection OCEAN
description Investigations of radio propagation at 35 and 150 mc into large city buildings have disclosed that, on the average, a loss in the order of 20 to 25 db may be encountered on the first floor. This loss, which represents the reduction from the median field in the city streets at the same distance from the transmitter, is known as building loss. Losses were found to be slightly smaller and more uniform at 150 mc than at 35 mc. Losses also were found to be appreciably less on higher floors in a building. Methods of using this information for engineering radio systems to serve people in buildings are described. Some sample problems demonstrate that, with equal receiver performance,the effective coverage range in buildings for a 150-mc system will be greater than that for a 35-mc system.
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spelling KOHA-OAI-TEST:3826112020-12-19T17:13:20ZRadio transmission into buildings at 35 and 150 mc / 331612 Rice, L. P. Investigations of radio propagation at 35 and 150 mc into large city buildings have disclosed that, on the average, a loss in the order of 20 to 25 db may be encountered on the first floor. This loss, which represents the reduction from the median field in the city streets at the same distance from the transmitter, is known as building loss. Losses were found to be slightly smaller and more uniform at 150 mc than at 35 mc. Losses also were found to be appreciably less on higher floors in a building. Methods of using this information for engineering radio systems to serve people in buildings are described. Some sample problems demonstrate that, with equal receiver performance,the effective coverage range in buildings for a 150-mc system will be greater than that for a 35-mc system.Investigations of radio propagation at 35 and 150 mc into large city buildings have disclosed that, on the average, a loss in the order of 20 to 25 db may be encountered on the first floor. This loss, which represents the reduction from the median field in the city streets at the same distance from the transmitter, is known as building loss. Losses were found to be slightly smaller and more uniform at 150 mc than at 35 mc. Losses also were found to be appreciably less on higher floors in a building. Methods of using this information for engineering radio systems to serve people in buildings are described. Some sample problems demonstrate that, with equal receiver performance,the effective coverage range in buildings for a 150-mc system will be greater than that for a 35-mc system.12PSZJBLRadioRadio
spellingShingle Radio
Radio
331612 Rice, L. P.
Radio transmission into buildings at 35 and 150 mc /
title Radio transmission into buildings at 35 and 150 mc /
title_full Radio transmission into buildings at 35 and 150 mc /
title_fullStr Radio transmission into buildings at 35 and 150 mc /
title_full_unstemmed Radio transmission into buildings at 35 and 150 mc /
title_short Radio transmission into buildings at 35 and 150 mc /
title_sort radio transmission into buildings at 35 and 150 mc
topic Radio
Radio
work_keys_str_mv AT 331612ricelp radiotransmissionintobuildingsat35and150mc