Knob Screws (Optional)

Spiderbeam offers optional Knob Screws which enable raising and lowering the aluminum mast much quicker than using the standard bolts with hex-heads.

 

WARNING:     DO NOT USE KNOB SCREWS ON MASTS

    USED WITH THE SPIDERBEAM YAGI!

 

Although it is more convenient to use the knob screws, it is not possible to tighten the clamps tight enough with them to prevent the mast segments from turning inside of eachother in strong winds.

 

If you mast is supporting simple wire antennas and must not be rotated, then Knob Screws are an excellent alternative to the standard bolts.

 

 

 

 

This photo shows the standard       Hex-Head bolt (above)

 

and 

 

the optional Knob Screw (below)

 

 

Photo:  Spiderbeam

 

WARNING:     DO NOT USE KNOB SCREWS ON MASTS

          USED WITH THE SPIDERBEAM YAGI!