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ARES Alerting Project A Low Cost - Build It Yourself – Tone Alert for Activating Your ARES Group Presented by: Jeff Young, KB3HF MO. Section EC.

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Presentation on theme: "ARES Alerting Project A Low Cost - Build It Yourself – Tone Alert for Activating Your ARES Group Presented by: Jeff Young, KB3HF MO. Section EC."— Presentation transcript:

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

2 Today's Problem SCC Current Alerting Uses Public Service System. Narrow Banding Mandate Requires New Equipment Tone Alerts Are Expensive – Not Budgeted in Narrow Band Updates

3 Alternative System Amateur Based System – Independent of PS 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

6 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 After Alert. Reset Button to Reset Alert LED. 12V DC Operation. Piezoelectric Alerting Sound Generator Optional.

7 Example Tone Decoder & Amateur Radio.

8 Example Tone Decoder & Scanner.

9 Users St. Charles Co. ARES Group Using First 18 Decoders. Boone Co., St. Louis Co., Jefferson Co., and Franklin Co. Missouri ARES Groups Have Obtained and Are Using the Decoders. 103 Total Decoders Now in Use. Decoders Have Been Very Reliable.

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

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

12 Encoding Methods Motorola Public Service Radios / MaxTrac/GM300 with Signaling

13 Encoding Methods Repeater Controller  CAT 1000 Repeater Controller Does 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.

14 Encoding Methods CAT 700 Repeater Controller With SelecTone Encoder Added

15 Hardware Custom PC Circuit Board. PIC Microprocessor Based System. All Circuit Parts Commonly Available. Step-by-Step “Heathkit” Type Assembly Instructions. Unit Cost Between $28 - $34 if Parts Bought in Quantity.

16 Schematic

17 Parts List DesignationQTY√PartValueSourcePart No. C1,C2,C3,C6,C85 Capacitor.1 uFDigiKey ND C4, C52 Capacitor22 pFDigiKeyBC1005CT-ND C71 Capacitor, Tant4.7 uFFuturlecC0047UT D21 Diode1N4004All Electronics1N4004 Q1,Q22 Transistor2N3904Futurlec2N3904 JP1, JP22 Jumper0 OhmsDigiKey0.0QBK-ND R101 Resistor120 OhmsDigiKey120QBK-ND R51 Resistor330 OhmsDigiKey330QBK-ND R1, R6, R7, RX4 Resistor1K OhmDigiKey1.0KQBK-ND R91 Resistor10K OhmDigiKey10KQBK-ND R81 Resistor20K OhmDigiKey20KQBK-ND R2, R32 Resistor100K OhmDigiKey100KQBK-ND R41 Resistor1M OhmDigiKey1.0MQBK-ND R111 Resistor8.2 Ohms 5WDigiKeyTWW5J8R2E-ND SCR11 SCR2N5062DigiKey2N5062GOS-ND U11 Op AmpLM358ANDigiKeyLM358ANFS-ND U21 Microprocessor12F609DigiKeyPIC12F609-I/P-ND U31 Voltage RegulatorLM7805TFuturlec7805T X11 Crystal4MHzDigiKeyX971-ND D31 LEDRED T1-3/4FuturlecLED5RFL D11 LEDGRN T1-3/4FuturlecLED5G SW11 Push ButtonN.C.All ElectronicsMPB-5 SW21 Toggle SwitchDPDTFuturlecDPDT11 SA11 Tone GeneratorSONALERTDigiKey ND RLY11 RelayRelay SPDTFuturlecJRC-23F-05 1 Relay (Alternate)Relay SPDTDigiKeyPB1017-ND 2 LED MountT1-3/4All ElectronicsHLED-4 2 Dip Socket8 PinFuturlecICS8 J31 DC Jack12V CoaxialFuturlecDCCHM4 P31 DC Plug12V Coaxial PlugFuturlecDCPWRF004 J1, J22 Jack3.5 mm MonoFuturlecP035SCK00 P1, P22 Plug3.5mm MonoFuturlecP035MB 1 Enclosure6"x3"x2"All ElectronicsMB FeetStickonDigiKeySJ ND 1 PC BoardRev 1.1FuturlecCustom Design 4 SpacersNylon #4 HoleDigiKey876K-ND 6 Screw4-40x5/8"DigiKeyH348-ND 6 Nuts4-40DigiKeyH216-ND 6 Lock Washer4-40DigiKeyH236-ND 7 26 Ga. Wires2-Blk, Red, Yel, Grn, Blu, Wht 2 22 Ga WiresBlk, Red 2 Labels

18 Instructions Step by Step Assembly Instructions

19 Illustrations

20

21

22 Final Decoders Have Worked Well For Over Two Years Now. Group Project For DIY Building. Great Tool for Alerting Nets, SkyWarn Activations, Meetings, etc.

23 Final Demo of Paging Capability –  CAT 700 Repeater Controller With Selectone Encoder Added  Zetron Encoder  Motorola GM300 VHF Radio Questions??


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