User's Manual

8A535X01 Rev. Preliminary-01 Page 8 of 18

G: numeric gain of antenna relative to isotropic radiator.

r: distance to centre of radiation in cm.

RF EXPOSURE DISTANCE LIMIT: r = (PG/4ΠS)

1/2

= (EIRP/4ΠS)

1/2

For General Population/ Uncontrolled Exposure:

S = 0.2

mW/cm

for frequency range of 30MHz – 300MHz.

S = f/1500 in

mW/cm

for frequency range of 300MHz – 1500MHz. f is the minimum used

frequency in MHz.

As an example, let us consider a case of minimum frequency f = 380MHz, RF power P = 37.3W and

an antenna with gain of 2.15dBi:

P = 37300 mW = 10 log(37300) dBm = 45.717 dBm

EIRP = P + G in dBm = 45.717 dBm + 2.15dB = 47.867 dBm = 10

(47.867/10)

= 61194mW

S = 380/1500

mW/cm

For General Population/bystanders: r = (EIRP/4ПS)

1/2

= (61194/4П(380/1500))

1/2

= 138.64cm.

The MPE safe distance is therefore at least 139cm (54.73”).

ATTENTION!

The MOBEXCOM DVRS Repeater must be restricted to occupational use only to

satisfy FCC RF Exposure requirements.

FCC Label

including interference that may cause undesired

2) This device must accept any interference received,

1) This device may not cause harmful interference, and

Operation is subject to the following two conditions:

This device complies with Part 15 of the FCC Rules.

operation.