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  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; views_display has a deprecated constructor in require_once() (line 3190 of /home/sbcrailway/mobile/includes/bootstrap.inc).
  • Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; views_many_to_one_helper has a deprecated constructor in require_once() (line 127 of /home/sbcrailway/mobile/sites/all/modules/ctools/ctools.module).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Notice: Trying to access array offset on value of type int in element_children() (line 6542 of /home/sbcrailway/mobile/includes/common.inc).
  • Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in _menu_load_objects() (line 579 of /home/sbcrailway/mobile/includes/menu.inc).
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Measure your diesel horn

Clinician: 
Frey, Robert

Part 1: This clinic shows how to measure the continuous (RMS) sound level of your Diesel Horn with a Sound Level Meter. There is a proper way to report your Meter results to others.
Part 2: Measuring the true (RMS) voltage driven by a DCC Sound Decoder into a speaker system. Then calculating the wattage of the measured (RMS) voltage based on the impedance of your speaker(s) (4, 8, 16, or 32 ohms)

Format: 
lecture
Topics: 
sound
electronics
Wednesday 8:30 PM to 9:30 PM Three Sisters