Acoustic Signal Test

I drew my rifle barrel back and leveled it against the suspended jute strand running to the sprinkler rose. One measured strike. The cord shuddered, transmitting tension straight into the perforated brass cap above. To amplify acoustic signal feedback, I uncapped the galvanized metal bottle cap from my belt and balanced it rim-down over the taut twine right above the clothespin clamp. A second controlled strike sent a sharp, vibrating rattle ringing through the can's hollow zinc cylinder. Resonance confirmed. Warning grid operational.