ARES RACES Training 9 July 2020

This recording is training for the ARRL EC-001 "Introduction to Emergency Communication Course". It covers the information in Session 1, Topics 2, 3 and 4. The information was presented by Terry Snyder, WB3BKN to the Dauphin County ARES/RACES. The slides were developed by Lloyd Jeffries, K1LGJ for ARRL STX. Original slides used and modified for this presentation were developed by Brian Daly, WB7OML, EC - King County (WA) District M - Western Washington Medical Services Team and leadership team of the Seattle ACS. The PowerPoint slides are available at www.hotera.org/...

[@threeowls369]

Thank you for sharing this information. 73

[@djterry17032]

Michael, when the central control is lost, the repeater becomes a local repeater and not connected to the system. It runs under Site Control. Site control means that if you need only short range communications within the range of the local site, you are ok. Most of the time these trunked systems are designed to cover large areas, such as an entire county. The local site can often not have a signal path to the intended location. Until central control is restored, a form of virtually failproof communication is needed. This is where amateur radio steps in with well trained individuals to handle traffic. That is the intent of this course.

[@MisterTwister55]

The authors of the PowerPoint/course are incorrect at 34:00. When a central controller goes down, the system goes into site trunking. A lack of a central controller does not mean the system goes down and reverts to simplex or conventional repeaters.