| The time now is 16.06.2024 - 02:19 |
|
|
|
|
| Author |
Message |
|
|
Post subject: medena strecha
 Posted: 22.04.2005 - 11:29 #19082
|
|
Basic
Joined: Dec 29, 2004
Posts: 24
|
|
| mam taku otazku, ze spoj na vzdialenost 250m oproti 12db vsesmerovke v relativne nezarusenom prostredi a priama viditelnost(dva stromy v ceste) ale medena kostolna veza tesne asi meter vedla vzdusnej ciary, klient by mal plechovku, ako sa to bude asi chovat, neskor sem pridam foto |
|
|
| |
|
|
|
 |
|
|
|
Post subject: RE: medena strecha
Posted: 22.04.2005 - 12:40 #19084
|
|
Majster
Joined: Jan 12, 2003
Posts: 4250
Location: /dev/null
|
|
odrazy signalu od strechy ti mozu spravit velmi dobre rusenie  |
|
|
| |
|
|
|
|
|
|
|
Post subject: medena strecha
Posted: 24.04.2005 - 13:15 #19108
|
|
Majster
Joined: Okt 22, 2003
Posts: 3321
Location: Banská Bystrica - Rudlová
|
|
| urcite zasahuje do fersnelovej zony. |
|
|
| |
|
|
|
|
|
|
|
Post subject: medena strecha
Posted: 25.04.2005 - 13:23 #19123
|
|
Basic
Joined: Dec 29, 2004
Posts: 24
|
|
|
|
|
|
|
|
|
Post subject: RE: medena strecha
Posted: 25.04.2005 - 13:37 #19126
|
|
Guru
Joined: Dec 27, 2002
Posts: 1505
|
|
http://en.wikipedia.org/wiki/Zone_plate
Fresnelova zona je v podstate priestor, v ktorom sa siri radiovy signal (ktory je v svojej podstate elmg vlnenie podobne ako svetlo).
Chalani tym chceli povedat len tolko, ze medena strecha utlmi signal, podobne ako ked pred luc svetla strcis nejaky predmet. To, ci signal, ktory cez prekazku prejde alebo nie zavisi od jeho vlnovej dlzky, vln.dlzky prekazky a par dalsich parametrov.
Najlepsie urobis, ked si to odmeras.
Mgx |
|
|
| |
|
|
|
|
|
|
|
All times are GMT
|
|
|
|
|
|
Powered by PNphpBB2 © 2003-2005 The PNphpBB Group
Credits |
|
|
