Thread: HF auto tune antenna mount for 110 or defender

Ours is not an auto tune, we have our Tap Ariel on the front bar, removable when not traveling.

Mrs hh

Ta Caroline. If it had a spring base I probably would do the same. I will probably mount at the back somewhere as this type has no spring base to absorb a hit.

I have destroyed a couple of car radio antennas in the last 12 months which were mounted on the front bar.

i'll post a pic of mine tomorrow, too dark for photos now.

jc

here are a few shots; stainless, TIG welded, stainless plates and cap heads with nylocs etc. had a Barrett 910 autotune fitted to it, very still and was perfect height.


jc

I had a bracket a bit like that then on reading the manual and discussing with their tech advisor, I was told to keep the autotune at least 160mm from the body and as the plastic casing forms a part of the radiating element , to mount it as high as possible. He said the join between the two bit of plastic was where the whip lengh is calculated and if this is sheilded signal will be lost.
I ended up mounting a spare wheel bracket and bolting it too that.
Didiman

Originally Posted by 123rover50

I had a bracket a bit like that then on reading the manual and discussing with their tech advisor, I was told to keep the autotune at least 160mm from the body and as the plastic casing forms a part of the radiating element , to mount it as high as possible. He said the join between the two bit of plastic was where the whip lengh is calculated and if this is sheilded signal will be lost.
I ended up mounting a spare wheel bracket and bolting it too that.
Didiman

thanks Keith, so does the manual recommend a gap of 160mm between the outside of the casing and the body? Do you know if that includes glass?

thanks

I managed to find a manual online for the 910.

Barrett recommend a gap of 160mm between the outside of the antenna and the body work. As the antenna diameter is about 100mm, the centre of the mount must be about 210mm from the body. My FFR mount wont place it far enough from the body.

Mounting it on a wheel carrier would achieve the gap. Maybe I need to revisit making a wheel carrier.

Unfortunately I won't have time to do a wheel carrier, and mount the HF antenna to it.

So I've bought a fold down base pictured on this website.

http://www.pefabrication.com.au/prod...roductid=17514

I have two options either fit to roof bar ( in middle or rear of roof) or mount on the bull bar. It will be folded down most of the time.

So any recommendations would be appreciated.