RadioFrame Networks Inc DH2 User Manual

Method of Procedure 
Pre-Installation 

RFN_3.1 Beta

 

The following apply to the GPS antenna array: 

• 

For cable runs up to 166 feet, use ½”

 

diameter LDF. 

• 

For cable runs from 167-290 feet, use 7/8” diameter LDF. 

• 

For cable runs longer than 290 feet consult with the RFN customer’s RF 
Engineering. 

• 

For interior cable runs from Polyphaser to site control cabinet use ½” 
diameter FSJ. 

• 

Terminate all LDF within 6" of antenna. 

The local telephone company installs the T1/E1 line, which terminates in an 8-pin 
modular plug. This demarcation (demarc) point connects to the T1/E1 through a 
surge arrestor. The following illustration shows the T1/E1 interface with the 
iDEN/802.11b RFS. 

 

Telco (T1/E1) interface with the iDEN/802.11b RFS. 

The surge arrestor must be adequately grounded as outlined in the Quality 
Standards Fixed Network Equipment - Installation Manual (R56). The surge 
arrestor usually mounts near the demarcation (demarc) point. The cable 
connecting the surge arrestor to the Telco SmartJack should be locally procured, 
or should be provided with the surge arrestor. The cable connecting the iSC-3 to 
the surge arrestor is locally procured. The following table lists RFN-approved 
surge suppression equipment.