K40 20,000 watt antenna.

[Nugginator]

Installed this k40 on my kenworth and it works great paird with my stryker 497hpc. BUT the coils vibrate terrible. Louder then my straight pipes. Question is, has anyone done anything about it or some modification. Again, love the performance. Just annoying to hear it hum.


Sorry if this has been asked before*

 

[Greg T]

Is this like an open coil center load? If so, I would use heat shrink tube just a bit longer than the actual coil to wrap it up.

 

[BC Coyote]

You'll see some serious fireworks if you put 20,000 watts into a K40 LOL!

 

[brandon7861]

I would wedge a small chunk of rubber between the middle of the coil and the insulator in the center. Keeping a little pressure on it will keep it from resonating.

 

[Xracerx13]

This K40 handles 20K. How is it mounted?
Is is mounted vertical or... Do you have the antenna tipping forward so the whip is straight at highway speeds? Like the picture above.
If it is forward, try straightening it out to be more vertical.

 

[BC Coyote]

I'll never understand the need for 20,000 watts in a mobile, unless of course you hang on the super bowl ! But in a truck ? To talk to other drivers that are usually within a mile or two ? I just don't get it............

 

[wjm1129]

I have one of these and used a plastic fiber powder bottle around the coil. Just cut the top and bottom off and slide it on the coil. It is a tight fit and will not hum.

 

[Nugginator]

View attachment 66090
This K40 handles 20K. How is it mounted?
Is is mounted vertical or... Do you have the antenna tipping forward so the whip is straight at highway speeds? Like the picture above.
If it is forward, try straightening it out to be more vertical.

It's on a kenworth t800 it's vertical.

 

[Nugginator]

I'll never understand the need for 20,000 watts in a mobile, unless of course you hang on the super bowl ! But in a truck ? To talk to other drivers that are usually within a mile or two ? I just don't get it............

It was better quality antenna then the cheap roadpro. So I got it. Obviously will never run that type of power.

 

[nomadradio]

A welded coil holds up to the intense vibration of service on a big truck better than a bolted-down coil.

Even if you never come close to the power rating, the construction is just more robust. Big trucks are hard on antennas.

73