Polar Diagram EGNX (East Midlands Airport)

[EGNXR]

Hi all,

Below is a my polar diagram from EGNX today using the supplied aerial on the car roof

[Allocator]

It's actually quite amazing just how good the standard antenna is if you can get it out in the open.  I spent ages putting my BS1100 external antenna up, then tried the standard antenna on the car roof away from the houses - I got better coverage to the south with the antenna on the car!

[EGNXR]

Hi Allocater,

I've been toying with the idea of an external aerial as my coverage to the East & NE is not brilliant. I'm off this week so I'm going to experiment with trying to get my aerial higher.

Cheers John

[Allocator]

John,

All you have to do is to get a good ratio between the height increase (good) and cable length (bad).  Jut putting the standard antenna on the outside of the Velux roof window gave me a vast improvement - about the same as the BS1100 with 10m of fairly average co-ax :-0

[EGNXR]

Allocator,

I'm mounting my aerial on a steel pole about 25mm square thats conveniantly stuck to the wall outside my window. I'm not using the disc supplied as a ground plane. If I could attach this would I get any significant increase as I am not really sure of the effects of a ground plane or how it works?

Cheers John

 

[pcochrane12]

hi john
stuck my standard aerial to a metal bird feeder while waiting for new wimo kit didnt use the disk for a ground plane the result was great considering it was 5 ft from the building and about 5ft up have a look at the newcastle screenshoot i posted yesterday showing with the wimo with pre amp at 35ft and the supplied set up as just stated
woul sy you dont need the disk if its a fair sized lump of metal on your wall
cheers paul

[darkskies74]

Hi all,

Below is a my polar diagram from EGNX today using the supplied aerial on the car roof

Does that mean the ideal ground plane is a car roof? Certainly the best polar diagram i've seen!!

Still waiting for my RBox, local supplier ran out!! :o(