The AirNav 3.13 software is running on under Windows 7 32 bit

The PC is a Core 2 6300 CPU @ 1.86GHz with 3 GB of ram

The system is running 24/7 and uploading images round the clock

See my AirNav Live HERE

Antenna is a RadarMax X2, I was running the supplied antenna outside and when I upgraded to the RadarMax antenna at the same height my aircraft count on the screen went from around 20 to over 50 ! Well today I got the RadarMax X2 above the ridge of my house and tracks went up to over 100. Its on a 5ft pole as my chimney bracket is poor but will soon get new brackets fitted so I can get it on a 15ft pole. Here are my polar diagrams showing supplied antenna on my roof and then the X2. Click images for full size view. As you can see I even needed to zoom my map out to fit it all in.

I have asked the suppliers of the RadarMax about "whats inside" They tell me it's 8 1/2 wave phased dipoles end fed... each made from RG213M .. Hand cut and assembled.
. It looks very well made and is supplied with stainless steel fittings, It is fitted with a SO259 but it can be supplied with a N type connector "at extra cost" on request, I picked to have the SO259 and I use RG213 coax thats about 10m long. At a later date I may also add a mast head pre amp. Here are some photos of the antenna.

Checking on Google Earth I am only 11m ASL so this makes the top of the antenna around 20m above sea level.

*****
The RadarMax X2 cost me only £49.50 + post from Anchor Supplies. But now Rob who designed and built these amazing antennas is no longer working for them. If you would like to buy a RadarMax X2 just send me a email and I will forward your email to Rob who will contact you direct and supply the antenna.

*****

PS I don't work for Anchor supplies or have any connection to them, i'm just a VERY HAPPY customer