SteppIR 4 Element Yagi, Instruction Manual

NOTE -   

It is strongly recommended that you run the “Test Motor” function (Ref the 
Operators Manual) at this point to insure that all your wiring is correct and the 
element housing units are operating correctly. 

 
Attach the Wiring Enclosure and Control Cable to the Boom 

 
Fasten the wiring enclosure to the boom using the #56 stainless steep hose clamp.  Position the plastic 
enclosure in a convenient position 

on the boom or mast 

making sure that the cut out in the cap is fac-

ing downward (

Figure 22

).  We do not seal the enclosure so that in the event there is water accumula-

tion inside the enclosure from condensation, it will be able to escape.   

Caution:  Do NOT trap the cables between the clamp and PVC tubing or over-tighten the clamp.  

Be Careful NOT to tape the cables over a sharp edge unless you provide extra protec-
tion to prevent eventually cutting through the sheath and shorting the wires.

Start at one end of the boom and tape all the cables snugly to the bottom of the boom so there are no 
loops or slack cables.

Six equally spaced tape points on each sides of the boom using two wraps of 

electrical tape each should be fine.  This is to prevent the cables from becoming damaged when mov-
ing the antenna and installing it on your tower.  Secure the 16 conductor cable and coax to the boom 
about 8” from the coax connector. 
 

NOTE:  Be sure 

to secure the cables before placing the antenna on the tower, as you will not be able 

to reach the driven element from the tower!  Refer to 

Drawing 5 

below for our suggested ca-

ble configuration. 

Drawing 5 

Suggested Coax Routing 

Rotor Loop: 
Control cable and coax 
taped  together 

Tape to boom approximately 
8” from coax connection 

SteppIR  Antennas - 4 Element 

19 

Figure 22 

Mount Horizontal  or  Vertical

Note:  If you do not want to install  or remove the antenna with the main coax feed line attached, make 

a coax jumper that connects to the driven element and goes along the boom back to the mast 
plate area where it can be connected to the main coax feed line coming up the tower.