tnx pasa and luci ..
In romania in south at 420km istambul tower with my blaupunkt detect direct turk radios wiuthout tropo .
105.6 resita and MR1 not firt stage received . Detect this radio in many days , intenisty low .
For me peak level tropo from turkey remain ERZURUM :
from 1350km @ 3000M peak form mountains level .
Dual direction tropo .
And in this moment sum propagation , zonguldak - bucharest and bucharest MR1 550+700 - 1250km , exact near distance from erzurum .
This calcul result exact increasing troposferic propagation for the solar cyle 24