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ARES ® Alerting Project

ARES ® Alerting Project. A Low Cost - Build It Yourself – Tone Alert for Activating Your ARES Group Presented by: Jeff Young, KB3HF MO. District C DEC . Today's Problem. SCC ARES ® Current Alerting Method Uses DEM Tone Alerts Narrow Banding Mandate Requires New Equipment

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ARES ® Alerting Project

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  1. ARES® Alerting Project A Low Cost - Build It Yourself – Tone Alert for Activating Your ARES Group Presented by: Jeff Young, KB3HF MO. District C DEC

  2. Today's Problem SCC ARES® Current Alerting Method Uses DEM Tone Alerts Narrow Banding Mandate Requires New Equipment Tone Alerts Are Expensive ($500+) – Not Budgeted in Narrow Band Updates

  3. Alternative System Amateur Based System – Independent of DEM System / Narrow Banding Requirements. Usable on Amateur Repeater Systems Which Have Wide Coverage. Sponsored by Amateur Groups (ARES®).

  4. Solution Design a Low Cost, Reliable 2 Tone Sequential Decoder. Must Externally Interface to Any Amateur Radio/Scanner Without Modification. Great Group Build It Yourself Project – Builds Individual Skills.

  5. Decoder Features Plugs Into Radio External Speaker Jack. External Speaker Plugs Into Decoder. Audio Mute / Bypass Switch. Ready LED, Alert LED Indicators. Timed Audio - Mutes 60 Sec. After Alert. Reset Button to Reset Alert LED. 12V DC Operation. Piezoelectric Alerting Sound Generator Optional.

  6. Example Tone Decoder & Amateur Radio.

  7. Example Tone Decoder & Scanner.

  8. Users St. Charles Co. ARES® Group Using Decoder with One Tone Pair – 18 Decoders in Use. Boone Co. ARES® Group Using Decoder with Multiple Tone Pairs For Zone Alerting – 25 Decoders in Use. Decoders Have Been Very Reliable.

  9. Encoding • Encoding is 2 Audio Tones Transmitted Sequentially. • Format is Referred to as Motorola Quick Call II or QC2. • First Tone is 1 Second in Length followed by the Second Tone 3 Seconds in Length.

  10. Encoding Methods Two Tone Encoders Are Available. Communications Specialists Zetron Encoder

  11. Encoding Methods Motorola Public Service Radios / MaxTrac/GM300 with Signaling

  12. Encoding Methods Repeater Controller CAT 1000 Repeater Controller Provides 2 Tone Sequential Paging. Repeater Scheduler Allows Automatic Paging For Weekly Nets. DTMF Accessed Macros Allow Multiple/Authorized Users to Send a Page Without a Personal Encoder.

  13. Encoding Methods CAT 700 Repeater Controller With SelecTone Encoder Added

  14. Decoder Hardware Custom Designed PC Board. PIC Microprocessor Based System. All Circuit Parts Commonly Available. Step-by-Step “Heathkit” Type Assembly Instructions in PDF File. Electronic Part Cost Between $25 - $30 if Bought in Quantity.

  15. Schematic

  16. Parts List

  17. Instructions

  18. Illustrations FIG 10 FIG 9 FIG 11 FIG 12

  19. Illustrations FIG 17 FIG 18 FIG 19 FIG 20

  20. Illustrations FIG 26 FIG 25 FIG 27 FIG 28

  21. Final • Tone Decoders Have Worked Well For Two Years Now in St. Charles Co. • Good Tool for Alerting the Membership for Nets, SkyWarn Activations, Meetings, etc. • Group Project For DIY Building.

  22. Final • Demonstration of Paging Methods • Zetron Encoder • Motorola GM300 VHF Radio • CAT 700 Repeater Controller With Selectone Encoder Added • Questions?? • 73

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