Thanks Noel, I have left the purchase of the coax until last, as I would like to install the best option, however first up wanted to ensure that the antenna location was optimal. Thanks for the advice on the LMR-400, I will definitely follow up on your suggestion.
PS: I just checked the figures on you web site link for my setup, and LMR-400 has a Total Run Attenuation of 1.9Db and Efficiency of 63.9% , while my existing RG58 has a Total Run Attenuation of 7.2dB and 19% efficiency. RG213 was 3.3Db and 46%. LMR-400 definitely looks like the way to go based on these figures - I should see even more improvement on reception.
I checked the setup of my custom build antenna, and Dave says it is a 7 element instead 10, and around 6Db instead of 9Db - still does a great job.
At the moment I am publishing the RadarBox screen (5min refresh) at
http://www.16right.com/ under ACARS Map (just scroll down). I had to restart my laptop yesterday evening, and it looks like the Polar plot needs to build again from the ground up. At the moment there is a spike plot to the west that looks abnormal.
Kurt: I did not see the details of the 280nm 160degree plot unfortunately.
At the moment I am looking at where RadarBox save the logs etc. so I can see if there is an opportunity to integrate the existing ACARS feed with the new ADS-B data, and publish the results on
www.16Right.com.