Neil and Jim swapped HS-1s on the LVEA floor last week Tuesday morning (2024-12-03). Repeated huddle test and both vertical HS-1s (serial no. 1151 and 1152) work brilliantly. The two huddle images attached are not of HS-1-1151 nor HS-1-1152, but of HS-1-LHO-Brian-Lantz; the setup for the huddle tests for all 3 HS-1 units was the same. The plot shows a seismic signal (blue) and noise floor of HS-1-1152 (green).