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9.  Before installing the Baluns and Matching / Phasing Harness, thread 3/8” SEAL NUTS fully onto all        

connectors, with the black Neoprene face of the nuts facing out. Attach Baluns and Phasing lines to the 
Driven Element Blocks and Junction Block as shown on the Dwg. Tighten the connectors 

gently

 using a 

7/16" end wrench. Once the connectors are tight, back the Seal Nuts out and finger-tighten firmly up against 
the face of the connectors (or tighten 

gently 

with 1/2” end wrench). A lot of torque is unnecessary. 

Depending on model and polarity, the Vertical balun may loop around another element. This is normal. Form 
balun coax until it is close to the boom and secure with a nylon cable tie. Also secure the other balun and the 
matching / phasing harness coax with cable ties. Ties should be snug but not crushing or kinking the coax. 

 
10. Use good quality coax and “N” connector for your feedline (see Installation Tips). Secure feed coax near 

connector on Junction Block, to provide stress relief. Allow about 60” of coax to hang in a loop between the 
rear end of the boom and the reattachment point (at least 12” beyond element tips) on the mast or 
crossboom.  

11. The boom to mast plate is normally mounted to the boom at the balance point. Note: Some antennas are 
rear mounted. Since the feed line represents significant weight it is best to have it attached and fastened to the 
boom with cable ties before final mounting the plate. Use two 1" U-bolts and the stainless nuts and lock washers 
provided. DO NOT OVER TIGHTEN. 1-1/2” and 2” U-bolts (and stainless steel nuts / lock washers) are provided 
for mounting the antenna to your NON-CONDUCTIVE mast or crossboom.  
 

THIS COMPLETES THE ANTENNA ASSEMBLY. 

(SEE INSTALLATION TIPS PAGE) 

 

 
 

146CP8 ASSEMBLY MANUAL 

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