Side arm mount

[ScannerDude244]

I been looking to add a low band mobile to my 30ft pole, but I need a side arm mount is their any places that sell them cheap or is it better to make one?
https://www.theantennafarm.com/catalog/rohn-r-uhf25g-5525

 

[mmckenna]

Depends.
If this is a mobile antenna, then making that mount work would require some fabrication.
If this is for personal use and not a commercial/LMR/public safety application, you can certainly make your own. If it was me, I'd probably use some Unistrut for something. Making it all stable is the challenge, is this going on a tower or a pole?

 

[ScannerDude244]

It's for personal use and yes a mobile antenna I have the ground plane kit already.

 

[prcguy]

Unistrut is great for side arm mounts, I've made lots of them. Its easy with a tower where you have two vertical members to attach, but with a single pole you would need a cross brace running at an angle from the pole to where the antenna attaches, otherwise your side arm will sag.

What mobile antenna will you use? Most need a lot of ground plane and if this VHF lo antenna is below the top of the pole and 3ft or 6ft out from the pole it will turn into a two element beam.

 

[ScannerDude244]

Unistrut is great for side arm mounts, I've made lots of them. Its easy with a tower where you have two vertical members to attach, but with a single pole you would need a cross brace running at an angle from the pole to where the antenna attaches, otherwise your side arm will sag.

What mobile antenna will you use? Most need a lot of ground plane and if this VHF lo antenna is below the top of the pole and 3ft or 6ft out from the pole it will turn into a two element beam.

Yup that's what I was thinking about the sag.