Aaronia SPECTRAN HF-2025, Руководство пользователя

Страница: 66 / 72

19.0 Conversion tables
66
Table 5 Power amplification factor and corresponding value in dB
1 0 dB
2 3 dB
2,5 4 dB
4 6 dB
5 7 dB
8 9 dB
10 10 dB
100 20 dB
1 000 30 dB
10 000 40 dB
100 000 50 dB
1 000 000 60 dB
10 000 000 70 dB
dB = Decibel
Table 6 Cellphone frequencies and providers
Start/Stop frequency Abbreviation Provider
864,1 868,1 CT2 Private
885,0 887,0 CT1+ (UL)* Private
914,0 915,0 CT1 (UL) * Private
930,0 932,0 CT1+ (DL)* Private
959,0 960,0 CT1 (DL) * Private
1.880 1.900 DECT Private
5.725 5.825 DECT2 Private
(UL) = "Uplink" mostly means “portable device” (mobile transmitter which transmits towards the
base station, e.g. a cellphone).
(DL) = "Downlink" mostly means “base station” (fixed transmitter which transmits towards the
portable device, e.g. a base station).
* License expired
CT1+: Cordless phone (analogue). License expires 1/1/2009. 10mW EIRP
DECT: Base station always transmits even when not handling calls. 250mW EIRP.
DECT2: New generation of cordless phones (“DECT successor”). 25mW EIRP
Significantly more extensive lists available on the Aaronia homepage. To get the full
“luxury”, get our free PC analysis software directly from there!
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com