Currently GS valid signal is received at 10nm(actually 9.7nm).
This is critical for 3000ft approach.
I'm using 2500ft approach and capture at 7.9nm.
When you approach to low angle GS such as UUEE-07L/25R Sheremetyevo International Airport whose angle is 2.6deg, 2500ft is still critical.
And RJAA has three ILS antennas for 2500ft, 3500ft and 4500ft approach and we can not use 3500ft or 4500ft approach.
If we have a method to adjust reception range for each antenna then no problem. But we have only one reception range for all the ILS.
Don't you think we have to extend that reception range 2 or 3miles more?