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ACEMWIN Project Overview

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Title: ACEMWIN Project Overview

1
AC-EMWIN Project Overview

Todd L. Sherman / KB4MHH

2
What Is EMWIN?

Emergency Managers Weather Information
Network

3
EMWIN DataStream

EMWIN is a suite of methods used to access a
live stream of weather and other critical
emergency information.
Current methods used to do this are
Satellite
Internet
VHF Radio

4
EMWIN Purpose

Allows users to obtain weather forecasts,
watches, warnings, and other information
including graphical forecasts and select
satellite data - directly from the NWS in almost
real time.
Intended to be used primarily by EMs and public
safety officials who need timely weather
information to make critical decisions.
However, anyone with a PC running Windows can use
EMWIN.

5
A Supplemental Service

Intended as a supplement to other NWS
dissemination services, such as NOAA Weather
Radio (NWR).

6
Usefulness

Can effectively meet the needs of public safety
managers, schools, and special needs groups such
as the deaf and hearing impaired.

7
EMWIN Data Distribution
8
THE AC-EMWIN SYSTEM
9
Timeline

20 FEB 2003- E-mail from Ken Allen at ACOEM.
2 FEB 2003 Scouted DSB rooftop.
5 FEB 2003 - EMWIN idea presented to GARS and
GARC. Both onboard. GARC offered use of their
club station.
7 FEB 2003 - EMWIN Equipment Delivery

10
Scouting Expedition PhotoFebruary 2, 2003
11
EMWIN Station Location

J.H. Miller Health Science Center
Dental Sciences Bldg., 11th Floor
Gator Amateur Radio Club, Rm. D11-27

12
EMWIN Console
13
THE EQUIPMENT

5-foot SAMI Satellite Dish
Zephyrus WX-13 9600 baud Satellite Receiver Unit
Power Supply
500 MHz Computer w/Intel Celeron Processor
Running Win-XP and Weather Message (WxMesg)
Software
Tigertronics NWT-12 1200 baud Modulator
ICOM F320S Transmitter Power Supply
Cushcraft PF-167 4-bay Commercial Transmitting
Antenna

14
Satellite Receiver Dish

Diameter 5-feet
Receives GOES-12 EMWIN signal
Sends signal to Satellite Receiver Unit

15
Satellite Receiver Unit

Zephyrus WX-13
Receives incomingGOES-12 satellitetransmissions
Sends to EMWINcomputer for handling

16
Computer

500 MHz Intel Celeron
Running WxMesg v2.2
Handles ingesting ofweather products from
satellite and/or theInternet, and the local
redistribution of those products

17
Modulator Unit

Tigertronics NWT-12
Converts incoming data to the appropriate FSK
format required for retransmission
(At 1200 baud)
Sends it to transmitter

18
Transmitter

ICOM F320S CommercialVHF Transceiver
Factory Pre-programmed
Power Output 12W
Transmitting Frequency163.325 MHz
Continuous Duty Transmit

19
On The Rooftop

PF-167 4-bay Dipole Transmitting Antenna (with
Polyphasor Lightning Protector)
SAMI 5-foot Satellite Receiver Dish

20
Transmitting Antenna

Cushcraft PF-167 Commercial four-bay Dipole
Antenna
Designed operating range 161 to 172 MHz
Operating Frequency 163.325 MHz
VSWR (measured) 1.31
Output at Antenna 25W
Approx. Height Above Ground 165 Feet

21
Why Retransmit?

Provide an important community service
Add local data
Add radar data
Reach more people for less cost than purchasing a
complete GOES satellite receiving station.
Ability to receive while portable or mobile

22
Coverage Area

Good coverage in most all of Gainesville
Seems to be limited to within Alachua County only
Though, some stations with tall antennas in
surrounding counties have reported clean useable
signal.

23
SYSTEM CAPABILITIES

Retransmission
Automated E-mail
Automated Text Paging
Automated Web Site Updates (FTP)

24
PRODUCT EXAMPLES
25
Text Products

Equiv. 40,000 pages of paper sent daily.
Product retransmission tailored to just Florida
and perhaps a few surrounding states only.
We control products retransmitted locally.
Custom configurable. More products can be added
by request, if desired.

26
Most CommonText Product Examples

Tornado Thunderstorm Watches/Warnings
Non-precip Watches, Warnings Advisories
Severe Weather Statement
Special Weather Statement
Hurricane Local Statement
Hazardous Weather Outlook

Zone Forecast Product
Short Term Forecast
State Weather Roundup
Local Forecast Product
State Forecast
and more

27
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28
Paging

NWS-JAX HAS ISSUED A TORNADO WARNING FOR
ALACHUA COUNTY UNTIL 245 PM. AT 213 PM, NWS
DOPPLER RADAR INDICATED A DEVELOPING
TORNADO 5 MILES NORTHWEST OF ARCHER MOVING
NORTHEAST AT 30 MILES PER HOUR.

29
GraphicsProducts
30
(No Transcript)
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(No Transcript)
32
CUSTOM PRODUCTS
33
(No Transcript)
34
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35
FTP and the Web
36
RECEIVING EMWINWhat Youll Need

FM receiver tuned to 163.325 MHz
VHF antenna
1200-baud demodulator unit, or
TNC capable of EMWIN Mode
MONO audio patch cable
PC running Windows 98
Software such as WeatherNode, RealEMWIN, or
Weather Message (WxMesg)

37
TheDemodulator

WX-41 (149.95)Zephyrus Electronicswww.big-z.co
m
NWX-12 (69.95)Tigertronics, Inc.www.tigertroni
cs.com

38
Example Setup
39
Software Locations

WeatherNode (Free)emwin.hcad.org/home2.htm
RealEMWIN (14-day Trial)www.skywatch.org/realem
win.html
Weather Message (30-day Trial)www.wxmesg.com

40
Future Plans

Move EMWIN satellite operations from GOES-8 to
GOES-12. (Completed in April, 2003.)
Increase downlink baud rate from 9600 baud to
19.2Kbaud. (Will require upgrade of receiver
unit.)
Addition of error correcting. This will improve
error rates. (EMWIN does not currently have this
ability.)
Increase number of available text and graphics
products.

41
For More Information

For more information about the Alachua County
EMWIN Project, and the products and services
available, please see our web page at
www.afn.org/skywarn/emwinOr send an e-mail
to skywarn_at_fireline.org

42
Acknowledgements Kudos