AirNav RadarBox
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length

Author Topic: Aerial in Loft?  (Read 4182 times)

0 Members and 1 Guest are viewing this topic.


  • Jr. Member
  • **
  • Posts: 95
Aerial in Loft?
« 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?


  • ShipTrax Beta Testers
  • Hero Member
  • *
  • Posts: 4219
    • Radarbox at Easter Ross
Re: Aerial in Loft?
« Reply #1 on: July 01, 2008, 10:34:44 AM »
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:

It's certainly worth a try.
« Last Edit: July 01, 2008, 10:40:34 AM by tarbat »


  • Beta Testers
  • Hero Member
  • *
  • Posts: 3568
Re: Aerial in Loft?
« Reply #2 on: July 01, 2008, 12:37:12 PM »
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.