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VHF/UHF Operations – Are you ready for an emergency?

VHF/UHF Operations – Are you ready for an emergency?. Mar 2011 BVARC Meeting Kirk KK2Z – Basic FM Operations Allen NQ5B – Emergency Ops, RACES, ARES Mike N5VCX – Public Service Events. What do you need?. VHF / UHF /Microwave Bands. Icom America. FM Signals – what’s different?.

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VHF/UHF Operations – Are you ready for an emergency?

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  1. VHF/UHF Operations – Are you ready for an emergency? Mar 2011 BVARC Meeting Kirk KK2Z – Basic FM Operations Allen NQ5B – Emergency Ops, RACES, ARES Mike N5VCX – Public Service Events

  2. What do you need?

  3. VHF/UHF/Microwave Bands Icom America

  4. FM Signals – what’s different? • Signal Strength • Capture Effect • Noise immunity

  5. Repeaters – Diagram

  6. Why an +/- Offset? In order to receive and transmit at the same time, repeaters use two different frequencies. Repeaters – Input/Output Offset

  7. Repeaters – Tones PL = Private Line (Motorola Proprietary Name) a.k.a CTCSS = Continuous Tone Coded Squelch System   67.0    94.8   131.8   171.3    203.5    69.3    97.4   136.5   173.8    206.5    71.9   100.0  141.3   177.3    210.7    74.4   103.5  146.2   179.9    218.1    77.0   107.2  151.4   183.5    225.7    79.7   110.9  156.7   186.2    229.1    82.5   114.8  159.8   189.9    233.6    85.4   118.8  162.2   192.8    241.8    88.5   123.0  165.5   196.6    250.3    91.5   127.3  167.9   199.5    254.1

  8. Repeater Example WA5CYI Repeater Offset -0.600 PL 167.9 146.34 146.94 KK2Z W5RH 167.9 167.9 167.9 167.9 146.94 146.34

  9. Terms Simplex Kerchunk Squelch Tail Full Quieting Doubling

  10. Repeater Etiquette • Listen, Listen, Listen • Use Plain Language  Don’t use Q-signals • Don’t have to call CQ…but…speak clearly • Take a breath…let someone join! …and… • ID every 10 minutes…it’s the law!

  11. Joining an existing QSO • Wait for a break. • Say (Your Callsign) … e.g., KK2Z • Wait to be recognized Give the ones talking a moment to finish their thoughts…they’ll let you join!

  12. Initiating a Call… • LISTEN!!! For 1 to 2 min to insure frequency not in use • Wait to make sure it is not simply a pause in the call • If no call in progress... • Ask if the frequency is in use. If not in use… Say

  13. Ending a call When you finish a conversation… • Each side of the call should transmit their “final” (…just like on the phone…Say goodbye) • Acknowledge all in the call … (Other Callsigns) (Your Callsign) • If you are staying on frequency… (Your Call) monitoring • If you are leaving (no longer listening)… (Your Call) clear

  14. In an Emergency… 1. Wait for a pause in the repeater activity. 2. Say… BREAK, BREAK BREAK (Your Callsign)“ …or… EMERGENCY EMERGENCY (Your Callsign) 3. Allow net control or someone on frequency to respond all other traffic STOPS! 4. Pass all necessary emergency information.

  15. Questions? ???

  16. Backup Slides

  17. VHF/UHF/Microwave Bands Ultra Frequencies: 2300 - 2310 MHz 2390 - 2450 MHz 3300 - 3500 MHz 5650 - 5925 MHz 10.0 - 10.5 GHz 24.0 - 24.25 GHz 47.0 - 47.2 GHz 76.0 - 81.9 GHz119.98 - 120.02 GHz142 - 149 GHz241 - 250 GHz ALL above 300 GHz

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