Here follows the field strength data of the
RoomCap Antenna.

This allows, among others, to determine the
security distance for the EMF regulation.

Field measurements performed 5th.July 2006
------------------------------------------
performed by HB9BWN and HB9ABX
sport field Bachgraben / Basel-Allschwil

Measured antenna:RoomCap 20m (w/o top capacity)

Transmit frequency = 14 Mhz

Distance = horizontal distance of sensor to radiator
Height = height of sensor above ground
Ant-Height = height of couterplanes above ground
Input power to antenna = 100 W


E-sensor / Ant-Height = 50cm / 100 W

Distance = 10m   
    Height = 30cm / 1m / 1,5m / 2m
             4,6   6,0   8,3    9,1  V/m

Distance = 5m
    Height = 30cm / 1m / 1,5m /  2m
             8,8  11,7  13,2   14,7  V/m
   
Distance = 4m
    Height = 30cm / 1m / 1,5m /  2m
             10,8  13,3  17,1   18,2 V/m

Distance = 3m
    Height = 30cm / 1m / 1,5m /  2m
             14,2  20,2  22,3   23,4 V/m

Distance = 2m
    Height = 30cm / 1m  / 1,5m /  2m
             21,5  34,6  41,2   42,6 V/m



H-sensor/ Ant-Height = 50cm / 100 W

Distance = 10m
    Height = 30cm / 1m / 1,5m /  2m       
             13    13    14      15 mA/m

Distance = 5m
    Height = 30cm / 1m  / 1,5m /  2m
             24    25     26      27 mA/m

Distance = 4m
    Height = 30cm / 1m  / 1,5m /  2m
             29     30    32      35 mA/m

Distance = 3m
    Height = 30cm / 1m  / 1,5m /  2m
             39     41    47      49 mA/m

Distance = 2m
    Height = 30cm / 1m  / 1,5m /  2m
             55     61    72      77 mA/m

Distance = 1m
    Height = 30cm / 1m  / 1,5m /  2m
            115    137    181    150 mA/m



E-Field / Distance 20cm / 10W

bottom    400  V/m
middle    550  V/m
top       420  V/m

H-Field / Distance 20cm / 10W

Resultat:   0,2   A/m



Measuring instrument:

Wandel&Goltermann
Type  = EMR-200
Serie = BN 2244/21

H-sensor = 12.1 / 2244 / 90.28
E-sensor =  8.2 / 2244 / 90.20



Felix Meyer HB9ABX