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Install the cable harness (MFJ-1765) in between the two 
antennas.  Connect one of the coax cables with PL-259 to one 
antenna and the other cable to the other antenna. 
 
Connect your antenna feedline to the SO-239 on the cable harness 
bracket. 
 
 

Tuning Instruction

 

 
The 5/8 wave Super-gain antenna is pre-tuned at the factory for 
minimum SWR at mid-band to operate on 144-148 MHz and also  on 
50-54 MHz.  However, if further fine tuning is needed, the 
elements maybe screwed in or out to obtain minimum SWR for the 
desire operation frequency.  

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