Hello, i am very interested in the SBS-1 virtual radar. 

I have been using ACARS for a number of years now and this new SBS-1
seems to be fantastic. I have searched on the net about it, but was
wondering if you could fill in some of the blanks for me. 

I live in valley and listen to airband and seem to get quite a good
range East and West, and fair range North and South of me. Probable 150
miles E-W and 80 miles N-S. 

A) If i put the aerial for this SBS-1 in the loft, what kind of range
could i expect (very roughly) ?, 

B) It says it picks up S/ADS-B equipped aircraft, now i'm mainly only
interested in civil aircraft on approach to my local airport
(Newcastle), when i see the aircraft pass over my house (around 4000ft
to 8000ft) i want to be able to use the SBS-1 to "see" them and find out
the registration of them, also to predict if a plane is going to pass
over my house by looking at the route it is taking. Also high-level
overflights over my house on their way to NEW (Newcastle VOR Beacon).
Would this SBS-1 be able to do that ?, would it pick up most civil
airliners over my house at those heights (KLM, Ryanair, EasyJet, BA,
Thomson, MyTravel etc etc) ?

Sorry for all the questions, but if i'm going to be paying nearly £400 i
need to know it is going to live up to my expectations (as i'm sure it
will). 

Also, where is the best place to buy these ? I see Javiation do then for
£389, is that a good price or are there better offers on ?

Best Regards, 
Andrew