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Radio propagation: Difference between revisions
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* usual transmitter power for localizer (known to be between 15-25 W) and glideslope (known to be between 5-10 W ???) equipment. | * usual transmitter power for localizer (known to be between 15-25 W) and glideslope (known to be between 5-10 W ???) equipment. | ||
* usual transmitter power for DME (not VOR) equipment: various source suggest from 50 W to 1 kW ( | * usual transmitter power for DME (not VOR) equipment: various source suggest from 50 W to 1 kW <ref>http://www.selex-si-uk.com/pdf/Distance%20Measuring%20Equipment%20(DME).pdf</ref>. | ||
* usual receiver sensitivity (in dBm) for DME equipment. | |||
* usual antenna types and gains for localizer and glideslope equipment: for localizer the ERP (effective radiated power) is known from various sources as approx 100 W, thus assuming 7-9 dBi antenna gain, glideslope antenna estimated gain 10 dBi <ref>http://www.dbsant.com/gsSpecs.php</ref>. | * usual antenna types and gains for localizer and glideslope equipment: for localizer the ERP (effective radiated power) is known from various sources as approx 100 W, thus assuming 7-9 dBi antenna gain, glideslope antenna estimated gain 10 dBi <ref>http://www.dbsant.com/gsSpecs.php</ref>. | ||
* most sources describe a 16 dB front-to-back ratio, thus being consistent with the default pattern used and shown in the picture above. Corrections welcome. | * most sources describe a 16 dB front-to-back ratio, thus being consistent with the default pattern used and shown in the picture above. Corrections welcome. | ||