Microwave Radio Communications LLC STATXU2D User Manual

 

 

 
 

 

Microwave Radio Communications Inc. in compliance with RF exposure limits set forth in OET 
Bulletin 65, Edition 97-01 utilizes this page for the intent of expressing our concerns to the user 
of this equipment STRATA 2 GHz Transmitter Unit (TXU) that there exists a radiation hazard 
with improper use of this equipment. 

The STRATA transmitter with rated 2-WATT RF Power output is designed as an intentional 
radiator, as such, this device has been designed to produce and emit radiation into an isotropic 
antenna for the purpose of delivering a digitally modulated signal to an appropriate receiving 
device. 

Due to the low output power of this device in and of itself it poses no such hazard until connected 
properly and securely to a properly matched antenna. Therefore it is necessary for the equipment 
operator to be made aware of the safe operating parameters of this device. Below is a chart based 
on the use of a 5dBi Omni directional antenna. The radiation limits at a distance of below 20cm 
exceeds the allowable safe exposure limits. Beyond a distance of 20 cm you will notice that the 
usable antenna gain (expressed in dBi) increases logarithmically with distance spherically from 
the radiator. 

In the case of an antenna with a concentrated beam such as a parabolic antenna, the caution to 
exposure levels would be relative to antenna gain and distance only with in the radiation pattern 
of the parabola. Notwithstanding, radiation exposure due to antenna inefficiency (side lobe and 
front to back emission) although severely reduced should be calculated. A case-by-case analysis 
of each antenna that is to be utilized with this device should be investigated. 

The intent of this document is to bring awareness to the operator of this device the potential for 
hazardous RF exposure limits if improperly used. Microwave Radio Communications Inc. 
cautions the user to contact our customer service department to receive exposure data or the 
antenna manufacturer to receive the radiation pattern of the antenna if not purchased through 
Microwave Radio Communications Inc.