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Introduction 

 

The DX Engineering 

DXE-CSR8X-1

 and 

DXE-CSR213-1

 are coaxial Cable Strain Relief kits 

especially designed to be used with DX Engineering Baluns and Comtek Baluns. The Cable 
Strain Relief may also be used on other baluns using the same NEMA grey case used on the 
Comtek Baluns. 
 
The 

DXE-CSR8X-1 

includes clamps for RG-8X coaxial cable and the 

DXE-CSR213-1 

includes 

clamps for RG-213 coaxial cable. 
 
Coaxial cable is heavy.  If not properly restrained, the weight of cable can cause a failure in your 
feed line connection and in some cases, the cable can pull completely out of the PL-259 connector. 
 
The 

DXE-CSR

 Cable Strain Relief kits are designed with corrosion-resistant aluminum and use 

stainless steel hardware. These kits are very durable and will ensure cable strain is relieved to 
keep you on the air.

  

 
Note:

 Extra flat washers and star lock washers are provided if you’re using the Cable Strain 

Relief Kit for other applications requiring dependable cable strain relief. 
 

 

WARNING! 

INSTALLATION OF ANY ANTENNA NEAR POWER LINES IS DANGEROUS 

 
 
 
 
 
 
 

 
 
Tools 

 

You will need 5/16” and 3/8” wrenches, socket and drive or nut drivers and pliers.  

 

Assembly with a DX Engineering Balun 

 

Loosely mount the bracket to the balun using the 3/8” x 5/8” long bolt, with the star washer between 
the bracket and the balun flange, and Nyloc nut (

Figure 1

). Depending on the balun used, the slot in 

the bracket shown in 

Figure 2

 is for adjusting the bracket from side to side to align the PL-259 to 

the balun’s SO-239. When installing stainless steel hardware, it is suggested that 

UMI-81343, 

81464, DXE-NSBT8

DXE

-

NMBT8 - Never-Seez®

 or 

Anti-Seize 

be used to prevent thread 

galling. 
 

 

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