223
edits
Radio propagation: Difference between revisions
Jump to navigation
Jump to search
→Request for information
| Line 47: | Line 47: | ||
* 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 (!!??). | ||
* 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. | |||
* usual localizer/glideslope antenna types and gains for various aircraft, for usage by aircraft developers. | * usual localizer/glideslope antenna types and gains for various aircraft, for usage by aircraft developers. | ||