RadioFrame Networks Inc DH2 User Manual

RadioFrame System 

RFN_3.1 Beta

the sky being obscured. Reflecting objects such as air conditioners, walls, and 
metal surfaces may cause multi-path interference with the GPS signal and 
should be kept below 10 degrees above the horizon. 

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Minimum separation between GPS antennas is 4 feet. 

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GPS antennas should be installed at a height that allows for regional snow 
depth. 

The antennas may be installed on building tops utilizing mounting hardware 
designed to allow physical positioning aiming the antennas to the designated 
coverage area sectors. Downtilt brackets should be installed during initial 
installation of antenna at all sites other than omni configurations. 

Antenna installation shall be per the manufacturer’s instructions. All antennas 
shall be placed according to RF engineering information supplied by the RFN 
customer. The installation hardware supplied with the antennas by the 
manufacturer shall be used unless the RFN customer is supplying special 
brackets for unusual mounting.  

In order for sites to hand off correctly, each site’s GPS antenna must receive 
pulse signals from a minimum of one satellite. From that pulse the sites will set 
their “internal clocks” so that all sites will be synchronized. 

Alarm wiring fitted with modular (8-pin Telco) connectors terminate at the EAS. 
All other connections are designed to terminate at a punch block.