There is another popular type of antenna that you can build yourself called a TDOA which stands for Time Difference of Arrival. [Byon Garrabrant N6BG] shared a short video tutorial on the ...

Only 28.9% of patients arrived at the hospital within 3 hours of the first warning sign, with the mean arrival time for the group being 330.4 minutes (5.5 hours). Mode of transportation and ...