vhf/uhf operations – are you ready for an emergency?
DESCRIPTION
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?. - PowerPoint PPT PresentationTRANSCRIPT
VHF/UHF Operations – VHF/UHF Operations – Are you ready for an Are you ready for an
emergency?emergency?
Mar 2011 BVARC MeetingMar 2011 BVARC Meeting
Kirk KK2Z – Basic FM OperationsKirk KK2Z – Basic FM OperationsAllen NQ5B – Emergency Ops, RACES, ARESAllen NQ5B – Emergency Ops, RACES, ARESMike N5VCX – Public Service EventsMike N5VCX – Public Service Events
What do you need?What do you need?
VHFVHF//UHFUHF/Microwave Bands/Microwave Bands
Icom America
FM Signals – what’s different?FM Signals – what’s different?
• Signal Strength
• Capture Effect
• Noise immunity
Repeaters – DiagramRepeaters – Diagram
Repeaters – Input/Output OffsetRepeaters – Input/Output Offset
Why an +/- Offset?Why an +/- Offset? In order to receive and transmit at the same time, In order to receive and transmit at the same time,
repeaters use two different frequencies. repeaters use two different frequencies.
6 meters 1 MHz (0.5 MHz)
2 meters 0.6 MHz
1.25 meters 1.6 MHz
70 cm 5 MHz
33 cm 12 MHz
23 cm 20 MHz
Repeaters – TonesRepeaters – 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
Repeater ExampleRepeater Example
KK2Z
167.9 167.9
167.9 167.9
WA5CYIRepeater
Offset -0.600PL 167.9
W5RH
146.94146.34
146.94 146.34
TermsTerms
Simplex Kerchunk
Squelch Tail Full Quieting
Doubling
Repeater Etiquette 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!
Joining an existing QSOJoining an existing QSO
1. Wait for a break.
2. Say (Your Callsign) … e.g., KK2Z
3. Wait to be recognized
Give the ones talking a moment to finish their thoughts…they’ll let you join!
Initiating a Call…Initiating a Call…
1. LISTEN!!! For 1 to 2 min to insure frequency not in use
2. Wait to make sure it is not simply a pause in the call
3. If no call in progress...
4. Ask if the frequency is in use. If not in use… Say
(Your Callsign) Call any station
KK2Z
KK2Z listening
KK2Z monitoring
(Other Callsign)
(Your Callsign)
Call specific station
W5RH KK2Z
Ending a callEnding 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
In an Emergency…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.
Questions?Questions?
???
Backup SlidesBackup Slides
VHFVHF//UHFUHF/Microwave Bands/Microwave BandsUltra 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
6 M 50-54 MHz
2 M 144-148 MHz
1.25 M 219-220 MHz
222-225 MHz
70 cm 420-450 MHz
33 cm 902-928 MHz
23 cm 1240-1300 MHz