APRS Ad-hoc Networks

43
APRS Ad-hoc Networks Appalachian Event 24 Jul 2011

description

APRS Ad-hoc Networks. Appalachian Event 24 Jul 2011. APRS Digipeating 101. Digipeating concept:. National Digi Infrastructure. But sometimes they are down, or you need an ad-hoc network. All of these radios can digipeat! Anytime, anywhere. Do we want them to? NO! - PowerPoint PPT Presentation

Transcript of APRS Ad-hoc Networks

Page 1: APRS Ad-hoc Networks

APRS Ad-hoc Networks

Appalachian Event 24 Jul 2011

Page 2: APRS Ad-hoc Networks

APRS Digipeating 101

Digipeating concept:

Page 3: APRS Ad-hoc Networks

National Digi Infrastructure

But sometimes they are down, or you need an ad-hoc network

Page 4: APRS Ad-hoc Networks

All of these radios can digipeat!

Anytime, anywhere

Do we want them to? NO!

Horendous QRM on channel

Impossible to control

Absentee operators

Never read their messages!

Do we want them to? YES!

but only when we need it

(under our user control)

Page 5: APRS Ad-hoc Networks

APRS Digipeating 101

Digipeating Mechanisms:

MYCALL – APRS VIA WB4APR… APRS,WB4APR* every TNC

MYALIAS – APRS VIA RELAY… APRS,RELAY* every TNC-----------------------------------------------------------------------------------------------------------------------------------

-----------------------------------------------------------------------------------------------------------------------------------

UIDIGI - APRS VIA MOBILE… APRS,WB4APR-9* Call substitution-----------------------------------------------------------------------------------------------------------------------------------

UITRACE – APRS VIA WIDE3-3… APRS,WB4APR-9*,WIDE3-2 Decrements N & trace

UIFLOOD – APRS VIA MDC3-3… APRS,MDC3-2 Decrements N

UIFLOOD (ID enabled) APRS,DIGIL,MDC3-2 Decrements N inserts

call of last digi only

UIFLOOD (FIRST kenwood) APRS,DIGI1,MDC3-2 Decrements N inserts

call of first digi

1978

1980

1995

1998

NetRom, TheNet =>

Beacons/ Digipeating illegal

Page 6: APRS Ad-hoc Networks

APRS Digipeating 102

How we use these capabilities for APRS:

Universal path for fixed stations, VIA WIDE2-2

For Mobiles VIA WIDE1-1,WIDE2-1

MYCALL – APRS VIA WB4APR-9,WIDE2-2… APRS,WB4APR-9*,WIDE2-2anytime

MYALIAS – APRS VIA WIDE1-1,WIDE2-2… APRS,WIDE1-1*,WIDE2-2 untracable

-----------------------------------------------------------------------------------------------------------------------------------

UIDIGI - APRS VIA WIDE1-1,WIDE2-2… APRS,WB4APR-9*,WIDE2-2 dupes

UITRACE – APRS VIA WIDE1-1,WIDE2-1… APRS,WB4APR-9*,WIDE1*,WIDE2-1 ***UIFLOOD – APRS VIA MDC3-3… APRS,MDC3-2 local

Page 7: APRS Ad-hoc Networks

APRS Digipeating 102

How we use these capabilities for APRS:Universal path for fixed stations, VIA WIDE2-2

For Mobiles VIA WIDE1-1,WIDE2-1

Page 8: APRS Ad-hoc Networks

APRS DigipeatingWhy do we keep N to 2 or less?

UITRACE – APRS VIA WIDE1-1,WIDE2-1… APRS,WB4APR-9*,WIDE1*,WIDE2-1 ***

Page 9: APRS Ad-hoc Networks

APRS DigipeatingWhy do we keep N to 2 or less?

UITRACE – APRS VIA WIDE1-1,WIDE2-1… APRS,WB4APR-9*,WIDE1*,WIDE2-1 ***

Page 10: APRS Ad-hoc Networks

SSn-N digipeatingUsing the path of MD6-6 hits every digi in Maryland only

120 dupes vs 15 copies desired

Page 11: APRS Ad-hoc Networks

APRS DigipeatingProportional Pathing!Every other packet is simplex direct. Every other is 1 hop. Every 4th is 2 hops

Page 12: APRS Ad-hoc Networks

APRS TEMPn-N Digipeating

How to use for IMMEDIATE TEMPORARY USE?:

EVERY MOBILE and or Emergency back up system should always support TEMPn-N digipeating

MYCALL – APRS VIA WB4APR-9,WIDE2-2… APRS,WB4APR-9*,WIDE2-2anytime

MYALIAS – APRS VIA WIDE1-1,WIDE2-2… APRS,WIDE1-1*,WIDE2-2 untracable

-----------------------------------------------------------------------------------------------------------------------------------

UITRACE – APRS VIA TEMP1-1,WIDE2-1… APRS,WB4APR-9*,TEMP1*,WIDE2-1 ***UIFLOOD – APRS VIA TEMP7-7… APRS,TEMP7-6 local

Page 13: APRS Ad-hoc Networks

APRS Ad-hoc

Networks

East Coast Backbone

Page 14: APRS Ad-hoc Networks

Annual Golden Packet Event

Appalachian Event 24 Jul 2011

Page 15: APRS Ad-hoc Networks

Annual Golden Packet Event

Page 16: APRS Ad-hoc Networks

Annual Golden Packet Event

Simple digipeater node

Page 17: APRS Ad-hoc Networks

Annual Golden Packet Event

Power is the issue

Page 18: APRS Ad-hoc Networks

APRS HOPn-N Digipeating

For the AT Golden Packet Event, we supported 2 paths:

HOPn-N (non tracing): arrived as DIGIx,HOP7-1

TEMPn-N (Tracing): arrived as DIGI1,DIGI2,DIGI3,etc

GOLDEN packets used HOP7-7,HOP7-7 to make it 15 stations end to end

TEST packets used the minimum TEMPn-N to trace their neighbors.-----------------------------------------------------------------------------------------------------------------------------------

UITRACE TEMP - The actual TNC command to set up TEMPn-N support

UIFLOOD HOP – The actual TNC command to set up HOPn-N support

Page 19: APRS Ad-hoc Networks

Link by Link maps

GeorgiaSpringer Mountain,

Page 20: APRS Ad-hoc Networks

Link by Link maps

Clingmans Dome

Roan Mtn

Comers Rock

Page 21: APRS Ad-hoc Networks

Link by Link maps

Comers

AO Mtn

Hawkbill

Page 22: APRS Ad-hoc Networks

Link by Link maps

White Rock Cliffs

MarylandMountain

Gov Dick Hill

Page 23: APRS Ad-hoc Networks

Link by Link maps

Page 24: APRS Ad-hoc Networks

Link by Link maps

Camelback

Sam’s Pt

Greylock

(Highpoint)

Page 25: APRS Ad-hoc Networks

Link by Link

maps

Sam’s Point

Greylock

NH Link?

Mt Washington

Page 26: APRS Ad-hoc Networks

Link by Link

maps

Greylock

Mt Washington

Sugarloaf, ME

Katahdin!

Page 27: APRS Ad-hoc Networks

More fun with Google Maps

Enter theBubble

and lookaround!

Page 28: APRS Ad-hoc Networks

Google Earth! The shack-potato’s tool

Page 29: APRS Ad-hoc Networks

Google Earth! The shack-potato’s tool

Page 30: APRS Ad-hoc Networks

Live or Google?

Page 31: APRS Ad-hoc Networks

Annual Golden Packet Event

My site. Gov’ Dick Hill

Page 32: APRS Ad-hoc Networks

Annual Golden Packet Event

Lots of hardware to lift

Page 33: APRS Ad-hoc Networks

Annual Golden Packet Event

Page 34: APRS Ad-hoc Networks

Highest is NOT best!

Page 35: APRS Ad-hoc Networks

Highest is NOT Best!

Page 36: APRS Ad-hoc Networks

Highest is NOT Best!

Page 37: APRS Ad-hoc Networks

Annual Golden Packet Event

Sam’s Point used D72 HT (also Mt Wash)

Page 38: APRS Ad-hoc Networks

Mountain Top RFI!

Sam’s Point used D72 HT (also Mt Wash)

Page 39: APRS Ad-hoc Networks

RF Link Analysis Tool (free)

KX4O John Huggins did all analysis

Page 40: APRS Ad-hoc Networks

4040

Appalachian Trail Appalachian Trail Golden PacketGolden Packet

KX4O John Huggins Complete RF Link Analysis!

Page 41: APRS Ad-hoc Networks

RF Link Analysis Tool (free)

But it worked for me!

Also shows statistics. Here is a -10 dB and +10 dB link

Page 42: APRS Ad-hoc Networks

Annual Golden Packet Event

KA1YBS climbed a

mile straight up

Katahdin

Page 43: APRS Ad-hoc Networks

APRS TEMPn-N Digipeating

How to use for IMMEDIATE TEMPORARY USE?:

EVERY MOBILE and or Emergency back up system should always support TEMPn-N digipeating

MYCALL – APRS VIA WB4APR-9,WIDE2-2… APRS,WB4APR-9*,WIDE2-2anytime

MYALIAS – APRS VIA WIDE1-1,WIDE2-2… APRS,WIDE1-1*,WIDE2-2 untracable

-----------------------------------------------------------------------------------------------------------------------------------

UITRACE – APRS VIA TEMP1-1,WIDE2-1… APRS,WB4APR-9*,TEMP1*,WIDE2-1 ***UIFLOOD – APRS VIA TEMP7-7… APRS,TEMP7-6 local