Agitate the first 45 seconds, then agitate for 10 seconds every in minute.
Recipes & dev times using Developer Kodak D-76
Kodak Tri-X 400 at 1600 in Kodak D-76 1+1
13 minutes, 15 seconds at 20°C/68.0°F
Kodak Tri-X 400 in Kodak D-76 1+1
9 minutes, 45 seconds at 20°C/68.0°F
Kodak Tri-X 400 in Kodak D-76 1+1
9 minutes, 45 seconds at 20°C/68.0°F
Kodak Tri-X 400 at 800 in Kodak D-76 1+1
10 minutes, 30 seconds at 20°C/68.0°F