Can't pick up DRY
Hi,
As I'm sure everyone is aware but just to clarify
you can't pick up "dry" - that's why you aim the tilt for the temperature band approx -10C and above. Anything colder does not reflect, particularly with the modern day radars of approx 120 watts (think of the energy per square foot/mile or whatever out at 40/80/100 miles over the tilt angle)
Now the 60 kw radars from the old days that was a little bit different - I sometimes felt you could pick up individual raindrops with them - just so much more return energy.
Cheers