APRS is a registered trademark Bob Bruninga, WB4APR Aa The APRS Land Network Multiple Hops And to...

APRS is a registered trademark Bob Bruninga, WB4APR

Aa

The APRS Land NetworkThe APRS Land Network

Multiple Hops

And to the Internet Gateway

Digipeaters


IGates (Global APRS!)IGates (Global APRS!)

● An IGATE is a local APRS station that utilizes An IGATE is a local APRS station that utilizes the APRS-Internet network to pass all the APRS-Internet network to pass all packets heard on their local RF back to the packets heard on their local RF back to the Internet.Internet.(Gives global views to local activity.)(Gives global views to local activity.)

● Also act as two-way gateways for ALL APRS Also act as two-way gateways for ALL APRS MESSAGES worldwide MESSAGES worldwide (Internet (Internet RF) RF)..


Global Mobile & Portable Global Mobile & Portable ComCom==APRSAPRS

Mar 2010, K9DCI

WHO-IS server

CQ server

Other Sats

QRZWHO-IS server

APRSLink server WinLink E-Mail

Web Browser

RFID Server

Radio

PSK-63

30 M Radio

TAG

144

144

144

HF

DTMF ONLY radio


APRS-Internet SystemAPRS-Internet System (APRS- (APRS-IS)IS)

Situational awareness + Internet services

APRS is a registered trademark Bob Bruninga, WB4APR Internet tracking developed by Steve Demise – K4HG

Findu.com etc. MappingFindu.com etc. Mapping

Feb 2009, K9DCI


WeLCARS Tech FestWeLCARS Tech Fest

Image from DB0ANF site

Feb 2009, K9DCI


FINDU – Stations Near ListFINDU – Stations Near List


FINDU – Stations Near MapFINDU – Stations Near Map


FINDU - MessagesFINDU - Messages


Findu.com Weather DataFindu.com Weather Data

Temperature & Dew Point

Rainfall Rates


Locate on Weather RadarLocate on Weather Radar

Feb 2009, K9DCI


Spotter NetworkSpotter Network

http://www.spotternetwork.org/

Register with the Spotter Network

Put !SN! in your comment

You’re on their map.

May 2011, K9DCI


Long Term TrackingLong Term Tracking

My travels in December 06 through May 07. Note lack of coverage areas.

Feb 2009, K9DCI


APRS for Special UsesAPRS for Special Uses● Bicycle rallies, racesBicycle rallies, races● Walk-a-thons, ParadesWalk-a-thons, Parades● SkywarnSkywarn● Weather NetsWeather Nets● Crime prevention patrolsCrime prevention patrols● Tornado recoveryTornado recovery● Damage assessmentDamage assessment● Direction Finding – FoxhuntsDirection Finding – Foxhunts● Voice for communications, APRS for visual mappingVoice for communications, APRS for visual mapping● Now integrating into APRN (Automatic Picture Relay Now integrating into APRN (Automatic Picture Relay

Network)Network)


Buoys & Buoys & StuffStuff German Buoy and Balloon projects

BUOY 4


Findu.com Telemetry Findu.com Telemetry PlotsPlots Google for

“USNA Buoy”

Select USNA-1

Google for “USNA Buoy” Select USNA-1


Other Other (APRS-IS)(APRS-IS) ServicesServices● World-Wide real-time one-to-one Messages - World-Wide real-time one-to-one Messages - Via Via

InternetInternet..Very short one-to-one messages. Between any two Very short one-to-one messages. Between any two

activeactive stations. stations. Allows Allows WORLD-WIDEWORLD-WIDE Voice QSOs with IRLP Objects Voice QSOs with IRLP ObjectsSend TO: Send TO: Callsign-SSIDCallsign-SSID

● EMAIL - Goes into the Internet e-mail system.EMAIL - Goes into the Internet e-mail system.Very short messages. Single APRS message, Send only.Very short messages. Single APRS message, Send only.Send TO:Send TO: EMAIL, SMAIL, EMAIL, SMAIL, or or AE5PL-EMAE5PL-EM (added (added

features)features)Email address first in message. Server sends ACK.Email address first in message. Server sends ACK.

● WHO-IS or WHO-15 WHO-IS or WHO-15 (some Digis require number SSID)(some Digis require number SSID)Send TO: Send TO: WHO-ISWHO-IS or or WHO-15 WHO-15 Call sign Call sign isis the the

message.message.License class, name, state & country are returned.License class, name, state & country are returned.

● CQ - World-wide real-time one-to-many messages CQ - World-wide real-time one-to-many messages (reflector).(reflector).

Send TO: Send TO: CQSRVRCQSRVR Msg is CQ {groupname} Msg is CQ {groupname}Used on Field Day [CQ FD CQ FD...] Valid for 12 hours.Used on Field Day [CQ FD CQ FD...] Valid for 12 hours.

● APRS <> APRS <> Winlink 2000 e-mail network.. Send TO: Send TO: WLNK-1 Multi-APRS messages required.See the command list

http://www.winlink.org/aprslink

May 2010, K9DCI


Other Other (APRS-IS)(APRS-IS) Services Services (Cont.)(Cont.)● Web Browser > Web Browser > RF messages.. Via Findu or

OpenAPRS ● APRS tt DTMF / Voice interface for anyoneAPRS tt DTMF / Voice interface for anyone

Another program on the Digi.Another program on the Digi.Any DTMF radio can be put on APRS network. Any DTMF radio can be put on APRS network. Voice response from APRS network.Voice response from APRS network.Also sends DTMF messages in DTSS format.Also sends DTMF messages in DTSS format.Allows WORLD-WIDE messaging with IRLPAllows WORLD-WIDE messaging with IRLP

● Loosely related:Loosely related:● PC with DTMF DecoderPC with DTMF Decoder● DTSS RadiosDTSS Radios..

Several HTs have DTMF message receive capability Several HTs have DTMF message receive capability Send and Receive DTSSSend and Receive DTSSKenwood: TH-28A/48A/78AKenwood: TH-28A/48A/78AYeasu: FT-11R,41R,51RYeasu: FT-11R,41R,51RICOM: W31AICOM: W31APossibly: FT-50R, TH-79a , FT-470, VX-7R, VX-8RPossibly: FT-50R, TH-79a , FT-470, VX-7R, VX-8R

May 2010, K9DCI


APRS is in Orbit

APRS is in Orbit

● APRS space frequency is APRS space frequency is 145.825 MHz145.825 MHz● Also via GO-32 on 435.225 downlink, Also via GO-32 on 435.225 downlink, 145.85145.85 MHzMHz up up

Feb 2009, K9DCI


● The Prototype Communications The Prototype Communications SatelliteSatellite,, is a US Naval is a US Naval Academy Aerospace student Academy Aerospace student project.project.

● APRS space frequency is published as 145.825APRS space frequency is published as 145.825

● As of June 2008 As of June 2008 currently useable: ISS, GO-32, ECHO and PCSAT when it is in good sun.

ANDE and RAFT in Dec 2006

Into Space..PCSATInto Space..PCSAT


PCSAT SatellitePCSAT Satellite● Launched Sept 2001 Launched Sept 2001

from Kodiak Alaska from Kodiak Alaska

● The first APRS satellite, The first APRS satellite, and has since been and has since been joined by 5 other such joined by 5 other such satellitessatellites

● Can capture Can capture Emergency /Priority Emergency /Priority messages from THD7 / messages from THD7 / D700 radios anywhere D700 radios anywhere on the globe and on the globe and retransmit these signals retransmit these signals on the USA VHF 144.39 on the USA VHF 144.39 APRS frequency. APRS frequency. See live downlink on

http://pcsat.aprs.org


International International Space StationSpace Station

● ARISS supports APRS ARISS supports APRS on its 145.80/145.99 on its 145.80/145.99 packet system.packet system.

● Use digipeater path Use digipeater path VIA ARISS. VIA ARISS.

● PCSAT2 was also on PCSAT2 was also on ISS 2005-2006ISS 2005-2006

● Also has FM voice Also has FM voice repeater capabilityrepeater capability

See live downlink on www.ariss.net

PCSAT2, was the PCSAT2, was the second APRS second APRS digipeater satellite.digipeater satellite.


Now GO-32Now GO-32TECHSAT-1bTECHSAT-1b

● GO-32 now supports GO-32 now supports APRS on its APRS on its 435.225/145.85 packet 435.225/145.85 packet system.system.

● APRS up on 145.85 APRS up on 145.85 (PC’s and messages)(PC’s and messages)

● Mic-E up on 145.93 Mic-E up on 145.93 (D7 and D700’s)(D7 and D700’s)

See live downlink on www.ariss.net

9600 Baud!9600 Baud!


GO32 -EZ - MOBILE GO32 -EZ - MOBILE SatelliteSatellite

Prediction and TrackingPrediction and Tracking

● No computer neededNo computer needed● Two or more solid TX/RX passes every dayTwo or more solid TX/RX passes every day● Two additional TX passes 100m before and after!Two additional TX passes 100m before and after!

Fri 26 Oct is day8Fri 26 Oct is day8


Tracking ECHO (AO51) Tracking ECHO (AO51) too!too!

● No computer neededNo computer needed● Two or more solid passes every dayTwo or more solid passes every day

Friday October 26Friday October 26thth is day 4! is day 4!


LEO Pass GeometryLEO Pass Geometry

Bottom line:Bottom line:

● 10 dB gain Horizon-to-horizon

● 98% of all in-view times

● Using $75 TV rotator only


Omni SatGatesOmni SatGates

Up coming satellite strength in next two hours. 10 minute ticks.

Feb 2009, K9DCI


Omni Antenna Omni Antenna Gain 7 dBi !Gain 7 dBi !

Anyone can be a SATgate!Anyone can be a SATgate!1%

70%

30%

Best elevation for reception

Data from omni antenna & GPS satellite strength. Percents are passes in each region.

3/4

1/4

Set the D700 or Set the D700 or D710 to digi D710 to digi

from B side Sat from B side Sat freq to A side freq to A side

144.390144.390

The 2 meter The 2 meter 1/4 antenna 1/4 antenna

has good gain has good gain at satellite at satellite

elevations on elevations on bothboth 144 & 144 &

440.440.

NO Sat tracking NO Sat tracking necessary!necessary!

Feb 2009, K9DCI


Omni SatGatesOmni SatGates

This is with a 3/4 wave vertical.

Below 25 degrees, satellites are further, thus 6-10 dB weaker.

Packets Received Per Minute vs. Satellite Elevation

Feb 2009, K9DCI


ASatLoggerASatLoggerAPRS Satellite Tracker

Current Ver 0.6.1

Beta 0.6.2

Feb 2009, K9DCI


ASatLogger FeaturesASatLogger Features● Facilitate comms with APRS and Packet Satellites.

● Control Kenwood D7, D700, D710's - serial port.

● Adjust D7 and D700 radio's automatically for Doppler shift - not the D710.

● ASatLogger reconfigures D7/D700/D710 in seconds for different satellite.

● Relay satellite packets to the APRS-Internet System and FindU.com.

● Log Packets to disk for a permanent record.

● Allow others to monitor Satellite communications via your station.

● Control a D7, D700, D710 and operate AsatLogger via Internet.

● Files for common satellites and radios included.

● Track multiple satellites - requires a Nova DDE Server and D7, D700, D710.


APRS Emergency APRS Emergency CommsComms

Satellite-Simulated Emergency Test – SSET

- Send an emergency Email via Satelilite

Meteor-Scatter Monitoring Network (6 meters)

- Dozens of Igates monitoring 50.62 MHz

- Message Throughput in minutes

- Using surplus 110 Watt 6m radios

- Simple 100’ long wire gain antennas


Other ItemsOther Items● Local Info Local Info

● Local repeater Freq & PL sent by digi. Meetings, Nets & Hamfest Info.Local repeater Freq & PL sent by digi. Meetings, Nets & Hamfest Info.

● Packet Cluster Packet Cluster D700, D7 & D710 display them.D700, D7 & D710 display them.

● HFHF APRS APRS30 Meter HF APRS frequency. Caution: Carrier out of band (10.151).30 Meter HF APRS frequency. Caution: Carrier out of band (10.151).300 baud. Subject to normal skip.300 baud. Subject to normal skip.PSK 63 PSK 63 NewNew in 2010 in 2010● HF APRS Boat and RV Tracking Net. APRS Boat and RV Tracking Net.

Carrier Mode NORMAL USAGE

7.085 LSB Regional HF tracking nets10.151 LSB National HF tracking freq

14.100 LSB DX tracking freq

14.105 LSB Packet Keyboarding freq

● RFIDRFID NewNew 125 kHz. Tags send into APRS network - 125 kHz. Tags send into APRS network - At Dayton 2010At Dayton 2010

● Ken-Key - - Keyboard interface for the TM-D700Keyboard interface for the TM-D700John Hansen W2FS John Hansen W2FS www.coastalchipworks.com/Kenkey.htmDoes NOT work with the D710 according to John.Does NOT work with the D710 according to John.

May 2010, K9DCI


APRS APRS EmergencyEmergency

Power Power200W Solar Power

- Continuous

10 kW gas Generator 220 VDC

- Auto-runs as needed

- lightweight wires

Low Cost

Bob Bruninga’s Solar augmented Prius

Feb 2009, K9DCI


Questions ? ? ?Questions ? ? ?

Slides from Bob Bruninga except as noted. Many were modified for this presentation

WHO-IS server

CQ server

Other Sats

QRZWHO-IS server

APRSLink server WinLink E-Mail

Web Browser

RFID Server

Radio

PSK-63

30 M Radio

TAG

144

144

144

HF

May 2010, K9DCI

DTMF ONLY radio

APRS is a registered trademark Bob Bruninga, WB4APR Aa The APRS Land Network Multiple Hops And to...

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