field proven performance – industrial grade support data-linc group radio mobile rf site surveys
TRANSCRIPT
Field Proven Performance – Industrial Grade Support
DATA-LINC GROUP
Radio Mobile RF Site SurveysRadio Mobile RF Site Surveys
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Topic ChoicesTopic Choices
Introduction
Maps & Pictures
Unit Properties
Networks Properties
Resolve Paths
Generate Reports
Tips & Examples
Closing Comments
Steps
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Radio Mobile is freeware software Written by a radio amateur Roger Coude’ (9VE2DBE)
for radio amateurs Operates from 20MHz to 20GHz Based on Irregular Terrain (Longley-Rice) propagation
model Is intended for longer distance outdoor applications Download and information at:
http://www.cplus.org/rmw/english1.html Radio Mobile User Group:
http://groups.yahoo.com/group/Radio_Mobile_Deluxe/
Radio Mobile SoftwareRadio Mobile Software
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Radio Mobile ScreenRadio Mobile Screen
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Data can be accessed online or purchased Elevation Data
SRTM (Shuttle Radar Topography Mission) DTED, GTOPO30, GLOBE, BIL
Street maps Tiger, OpenStreetMap…
Images and ground cover Landsat, Terraserver, Toporama, Land Cover…
Elevation & Map MergesElevation & Map Merges
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Topological data is available for most of the world List of sources: ttp://www.cplus.org/rmw/dataen.html Shuttle Radar Topography Mission (SRTM)
Info and data from Jet Propulsion Laborary:http://www2.jpl.nasa.gov/srtm/
Data is freely available via FTP:ftp://e0srp01u.ecs.nasa.gov/srtm/
The FTP site is heavily used and is taken down for maintenance on Wednesday nights
Various resolutions (1 and 3 arcsec, others…) There are some “holes” where data are not
available
SRTM Elevation MapsSRTM Elevation Maps
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Site locations Latitude/Longitude coordinates Acceptable antenna elevations above ground
Radio specifications (Radiosys.dat) Transmitter Receiver Antenna and coax
Network design criteria Line Of Sight (LOS) Fade Margin
User Provided InformationUser Provided Information
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For ISM bands (900MHz, 2.4GHz, 5.8GHz) and RF paths less than 50km: Rainfall is not a consideration Climate setting = Continental temperate
May not be valid for air to ground applications Typically for 1km+ distances
Longley-Rice ITSLongley-Rice ITS
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Check for web update under Help Confirm Radiosys.dat contains Data-Linc radio
systems (File…Networks Properties…Systems)
Confirm Radio Mobile ConfigurationConfirm Radio Mobile Configuration
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Application information Obtain site coordinates and useable antenna heights Identify the master site(s) Identify the preferred wireless product
Using Radio Mobile Prepare maps and map pictures Enter Unit (site) Properties Define and analyze “All Masters” Network Resolve RF path issues
Prepare Site Survey report
Site Survey StepsSite Survey Steps
Prepare Map and Picture MergesPrepare Map and Picture Merges
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Estimate Lat/Lon for map center (master site?) Estimate map size in km and display size Set Options…Internet for SRTM data and region
Define the Elevation Data SourceDefine the Elevation Data Source
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SRTM USA 1 Arcsecond RegionsSRTM USA 1 Arcsecond Regions
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File…Map properties…
Define Map PropertiesDefine Map Properties
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File…Picture properties tosuit your needs…
Picture PropertiesPicture Properties
Gray scaled
Colored Slope
Rainbow
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Edit…Merge Pictures…
Streets and Other Map MergesStreets and Other Map Merges
Internet Tiger - USA
Unit PropertiesUnit Properties
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Build the map first so unit elevation can be extracted from the map
File…Unit properties
Notice a unit can be placed at the cursor position on the map
Entering Unit (Site) InformationEntering Unit (Site) Information
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Coordinates can be entered as: 47° 34’ 21” 47° 34.35’ 47.5725
An example coordinate units converter:http://www.jeepreviews.com/wireless-gps-coordinates/
Entering LAT/LON CoordinatesEntering LAT/LON Coordinates
Define Network(s)Define Network(s)
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Radio Mobile can be used for applications with a single network of two radios to multiple networks of many radios
A SRM master with several slaves can be a network
A repeater with attached slaves can be another network
A “system” is a radio, antenna, coax, lightning arrestor, connectors, etc.
What is Network and System?What is Network and System?
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This will be the starting point for analysis For the “All Masters” network
Set RF band frequencies Set network topology (typically voice) Set the Systems (radio, antenna, coax combinations) Set RF path style based on Rx Relative (fade margin) Add units (members) to the network and
Set role to master Choose a system (use omni antenna at this point) If known set antenna elevation AGL
Build an “All Masters” NetworkBuild an “All Masters” Network
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File…Networks Properties…
Networks ParametersNetworks Parameters
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Networks TopologyNetworks Topology
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Networks SystemsNetworks Systems
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Networks MembershipNetworks Membership
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Networks StyleNetworks Style
Resolve RF PathsResolve RF Paths
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Objective here is to minimize your time and labor by quickly determining path issues and application feasibility
Requires “All Masters” network
Objective & RequirementsObjective & Requirements
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Use the Radio Link Tool Filter paths using Networks…Styles Tools…Network Report Consider possibilities
Change unit system (antenna sub-system)? Adjust unit elevation AGL? Different wireless product? Other repeater sites? Mixed wired/wireless solution?
Formulate a solution plan
Basic ActivitiesBasic Activities
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Possibly create a network for the master and each repeater
Assign units to appropriate network(s) Multiple RF links from master and repeaters to a unit
(site) is desirable (alternate paths) Caution: Antenna height and system (ant/coax/radio)
for the same site are not linked in each network Set unit’s role in network (master/repeater/slave)
Adjust antenna elevation AGL, System type (omni/yagi/coax) for each unit
Repeat previous steps until satisfied
Implement the PlanImplement the Plan
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Radio Link ToolRadio Link Tool
Generate ReportGenerate Report
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Report details based on feasibility and survey funding Quick and minimal Thorough and complete
Reports are often the foundation for on-site surveys
Reporting CommentsReporting Comments
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MS Word report template Screen capture software such as Snagit or Paint
Shop Pro Radio Mobile:
Pictures RF path cross-section screen captures Network report
Data-Linc parts list Findings summary and possible concerns
Report Generation ToolsReport Generation Tools
Tips & ExamplesTips & Examples
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Using Google Earth When a radio will be mounted at antenna
elevation adjust unit elevation to keep coax short
Other Features and TipsOther Features and Tips
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Desired Radio: SRM7210E? Site Details:
Master36°01'12"N 087°53'57“W 40ft N Tank 36°06'12"N 087°47'01“W 100ft TH Tank 36°04'35“N 087°47'46“W 75ft CR Tank 36°03'42"N 087°54'47“W 100ft CC Tank 36°05'24“N 087°46'31“W 75ft PS1 36°05'06"N 087°47'08“W 10ft IS Tank 36°05'08"N 087°47'46"W 60ft
Heights are Above Ground Level (AGL)
Example Network 1 Example Network 1
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Desired Radio: PLR5000 Site Details:
Master 43°39'42"N 116°16'25“W 10m Repeater 1 43°40'52“N 116°14'29“W 15m Repeater 2 43°40'18“N 116°13'49“W 20m PS 1 43°41'26"N 116°14'44“W 4.5m PS 2 43°40'42"N 116°13'58“W 10m PS 3 43°40'22"N 116°11'53“W 15m
Example Network 2Example Network 2
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Prefer SRM6000 radios Antenna elevations not to exceed 30 feet Site Details:
Master 38°12'07"N 120°41'21“W HWY 49 38°12'08"N 120°41'42“W SunSet 38°11'32"N 120°41'20“W OakShadows 38°11'08"N 120°39'42“W WT1 38°11'15"N 120°40'04“W
Example Network 3Example Network 3
Field Proven Performance – Industrial Grade Support
DATA-LINC GROUP
Thank You!Thank You!