AirNav Systems Forum
AirNav RadarBox and RadarBox24.com => AirNav RadarBox and RadarBox24.com Discussion => Topic started by: Tallyho on July 01, 2008, 10:11:48 AM
-
Radarbox arrived this morning all up and running in ten minutes fantastic!
However looking at the polar diagram I am only getting good coverage to the east by having the aerial on the window sill of my Velux windows 3 floors up in my house (which obviously points east).
I was wondering if I put the aerial in the loft would I get better "all round reception", anyone tried this or would putting it in the loft give worse results?
thanks
Keith
-
So much depends on the construction of your roof. I have my antenna in the loft, with good results except in the direction of the gable ends where the very thick concrete blocks prevent good reception:
(http://farm4.static.flickr.com/3183/2627884852_632dd84d5d_t.jpg) (http://farm4.static.flickr.com/3183/2627884852_269bbd7118_o.gif)
It's certainly worth a try.
-
I used the standard antenna resting on the Velux window itself - stuck the the metal "CD" groundplane and fed out of the vent at the top of the window (be careful not to cut the cable with the latching mechanism). I did get a slight bias in the direction the antenna faced, but it wasn't a major problem.
Make sure you leave plenty of time for the polar diagram to build up, and remember that if there are no aircraft in a particular part of the sky (no air routes) then that will affect your polar diagram. Height is everything, so if you can get the antenna even 6 inches higher, you will get a better performance.
You could try the antenna in the loft, but I would always try to get it outside. Half the fun is trying different locations :-)
I now use the BS1100 external antenna.