Transcript APRS Introductory Overview

The APRS Land Network
Aa
Digipeaters
And to the Internet
Gateway
Multiple Hops
APRS is a registered trademark Bob Bruninga, WB4APR
IGates (Global APRS!)
● An IGATE is a local APRS station that utilizes
the APRS-Internet network to pass all packets
heard on their local RF back to the Internet.
(Gives global views to local activity.)
● Also act as two-way gateways for ALL APRS
MESSAGES worldwide (Internet  RF).
APRS is a registered trademark Bob Bruninga, WB4APR
Global Mobile & Portable
Com=APRS
Other Sats
APRSLink server
WinLink
WHO-IS server
E-Mail
QRZ
Web Browser
HF
Radio
CQ server
RFID Server
TAG
30 M Radio
PSK-63
Mar 2010, K9DCI
DTMF ONLY
radio
APRS is a registered trademark Bob Bruninga, WB4APR
APRS-Internet System (APRS-IS)
Situational awareness +
Internet services
APRS is a registered trademark Bob Bruninga, WB4APR
Findu.com etc. Mapping
Internet tracking developed by Steve Demise – K4HG
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
WeLCARS Tech Fest
Image from DB0ANF site
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
FINDU – Stations Near List
APRS is a registered trademark Bob Bruninga, WB4APR
FINDU – Stations Near Map
APRS is a registered trademark Bob Bruninga, WB4APR
FINDU - Messages
APRS is a registered trademark Bob Bruninga, WB4APR
Findu.com Weather Data
Temperature & Dew Point
Rainfall Rates
APRS is a registered trademark Bob Bruninga, WB4APR
Locate on Weather Radar
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
Spotter Network
http://www.spotternetwork.org/
Register with the Spotter
Network
Put !SN! in your comment
You’re on their map.
May 2011, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
Long Term Tracking
My travels in December 06 through May 07. Note lack of coverage areas.
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
APRS for Special Uses
Bicycle rallies, races
● Walk-a-thons, Parades
● Skywarn
● Weather Nets
● Crime prevention patrols
● Tornado recovery
● Damage assessment
● Direction Finding – Foxhunts
● Voice for communications, APRS for visual mapping
● Now integrating into APRN (Automatic Picture Relay
Network)
●
APRS is a registered trademark Bob Bruninga, WB4APR
Buoys & Stuff
German Buoy and Balloon projects
BUOY 4
APRS is a registered trademark Bob Bruninga, WB4APR
Findu.com Telemetry Plots
Google for
“USNA Buoy”
Select USNA-1
Google for “USNA Buoy” Select USNA-1
APRS is a registered trademark Bob Bruninga, WB4APR
Other
(APRS-IS)
Services
● World-Wide real-time one-to-one Messages -
Via Internet.
Very short one-to-one messages. Between any two active stations.
Allows WORLD-WIDE Voice QSOs with IRLP Objects
Send TO: Callsign-SSID
● EMAIL - Goes into the Internet e-mail system.
Very short messages. Single APRS message, Send only.
Send TO: EMAIL, SMAIL, or AE5PL-EM (added features)
Email address first in message. Server sends ACK.
● WHO-IS or WHO-15
(some Digis require number SSID)
Send TO: WHO-IS or WHO-15 Call sign is the message.
License class, name, state & country are returned.
● CQ - World-wide real-time one-to-many messages (reflector).
Send TO: CQSRVR Msg is CQ {groupname}
Used on Field Day [CQ FD CQ FD...] Valid for 12 hours.
● APRS <> Winlink 2000 e-mail network.
Send TO: WLNK-1 Multi-APRS messages required.
See the command list http://www.winlink.org/aprslink
May 2010, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
Other
(APRS-IS)
Services
(Cont.)
● Web Browser > RF messages. Via Findu or OpenAPRS
● APRS tt
DTMF / Voice interface for anyone
Another program on the Digi.
Any DTMF radio can be put on APRS network.
Voice response from APRS network.
Also sends DTMF messages in DTSS format.
Allows WORLD-WIDE messaging with IRLP
● Loosely related:
● PC with DTMF Decoder
● DTSS Radios.
Several HTs have DTMF message receive capability
Send and Receive DTSS
Kenwood: TH-28A/48A/78A
Yeasu: FT-11R,41R,51R
ICOM: W31A
Possibly: FT-50R, TH-79a , FT-470, VX-7R, VX-8R
May 2010, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
APRS is in Orbit
● APRS space frequency is 145.825 MHz
● Also via GO-32 on 435.225 downlink, 145.85 MHz up
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
Into Space..PCSAT
●
The Prototype Communications
Satellite, is a US Naval Academy
Aerospace student project.
ANDE and RAFT
in Dec 2006
●
APRS space frequency is published as 145.825
●
As of June 2008 currently useable: ISS, GO-32, ECHO
and PCSAT when it is in good sun.
APRS is a registered trademark Bob Bruninga, WB4APR
PCSAT Satellite
● Launched Sept 2001 from
Kodiak Alaska
● The first APRS satellite,
and has since been joined
by 5 other such satellites
●
Can capture Emergency
/Priority messages from
THD7 / D700 radios
anywhere on the globe
and retransmit these
signals on the USA VHF
144.39 APRS frequency.
See live downlink on http://pcsat.aprs.org
APRS is a registered trademark Bob Bruninga, WB4APR
International
Space Station
● ARISS supports APRS
on its 145.80/145.99
packet system.
● Use digipeater path
VIA ARISS.
● PCSAT2 was also on
ISS 2005-2006
● Also has FM voice
repeater capability
See live downlink on www.ariss.net
PCSAT2, was the second
APRS digipeater satellite.
APRS is a registered trademark Bob Bruninga, WB4APR
Now GO-32
TECHSAT-1b
● GO-32 now supports
APRS on its
435.225/145.85 packet
system.
● APRS up on 145.85
(PC’s and messages)
● Mic-E up on 145.93
(D7 and D700’s)
9600 Baud!
See live downlink on www.ariss.net
APRS is a registered trademark Bob Bruninga, WB4APR
GO32 -EZ - MOBILE Satellite
Prediction and Tracking
Fri 26 Oct is day8
● No computer needed
● Two or more solid TX/RX passes every day
● Two additional TX passes 100m before and after!
APRS is a registered trademark Bob Bruninga, WB4APR
Tracking ECHO (AO51) too!
Friday October 26th is day 4!
● No computer needed
● Two or more solid passes every day
APRS is a registered trademark Bob Bruninga, WB4APR
LEO Pass Geometry
Bottom line:
● 10 dB gain Horizon-to-horizon
● 98% of all in-view times
● Using $75 TV rotator only
APRS is a registered trademark Bob Bruninga, WB4APR
Omni SatGates
Up coming satellite strength in next two hours.
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
10 minute ticks.
Anyone can be a SATgate!
Omni Antenna
Gain 7 dBi !
1%
The 2 meter 1/4
antenna has good
gain at satellite
elevations on
both 144 & 440.
30%
3/4
1/4
Best elevation
for reception
NO Sat tracking
necessary!
70%
Set the D700 or
D710 to digi from
B side Sat freq to
A side 144.390
Data from omni antenna & GPS satellite strength. Percents are passes in each region.
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
Omni SatGates
Packets Received Per Minute vs. Satellite Elevation
This is with a 3/4 wave vertical.
Below 25 degrees, satellites are further, thus 6-10 dB weaker.
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
APRS Satellite Tracker
ASatLogger
Current Ver 0.6.1
Beta 0.6.2
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
ASatLogger 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 is a registered trademark Bob Bruninga, WB4APR
APRS Emergency Comms
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
APRS is a registered trademark Bob Bruninga, WB4APR
Other Items
● Local Info
● Local repeater Freq & PL sent by digi. Meetings, Nets & Hamfest Info.
● Packet Cluster D700, D7 & D710 display them.
● HF APRS
30 Meter HF APRS frequency. Caution: Carrier out of band (10.151).
300 baud. Subject to normal skip.
PSK 63 New in 2010
● HF APRS Boat and RV Tracking Net.
Carrier
7.085
10.151
14.100
14.105
Mode NORMAL USAGE
LSB Regional HF tracking nets
LSB National HF tracking freq
LSB DX tracking freq
LSB Packet Keyboarding freq
● RFID New 125 kHz. Tags send into APRS network - At Dayton 2010
● Ken-Key - Keyboard interface for the TM-D700
John Hansen W2FS www.coastalchipworks.com/Kenkey.htm
Does NOT work with the D710 according to John.
May 2010, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
APRS Emergency
Power
200W Solar Power
- Continuous
10 kW gas Generator 220 VDC
- Auto-runs as needed
Bob Bruninga’s Solar augmented Prius
- lightweight wires
Low Cost
Feb 2009, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR
Questions ? ? ?
Other Sats
APRSLink server
WinLink
WHO-IS server
E-Mail
QRZ
Web Browser
HF
DTMF ONLY
radio
Radio
CQ server
RFID Server
TAG
30 M Radio
PSK-63
Slides from Bob Bruninga except as noted. Many were modified for this presentation
May 2010, K9DCI
APRS is a registered trademark Bob Bruninga, WB4APR