Intro to Relatively Cheap High Speed Multimedia Applications
Racine Amateur
Television Society & RCARES Digital Group
http://www.kb9mma.com/HSMM-RACINE
•The goal of this presentation is to get you thinking. How you can use HSMM for emergency communications and for public service events.
•It is up to you to decide the options whether running HSMM is worth it.
Goals
Why should we care?
• This is NOT hard, just takes patients
• OLD and New hams can work together on these projects!
• Some of this can be non-line of sight.
• HSMM can provide a very cost effective failure resistant wireless backbone for area ham digital systems
• It integrates into anything TCP/IP compatible
• Digital radio is ham radio’s future!
• Commercial and other entities are already there
• Ham radio is behind in this development.
• Open protocols- TCP/IP, off the shelf software and hardware.
• Lastly, and not most importantly it is FUN!
What is HSMM?
HSMM, or High Speed Multimedia, is the name of an ARRL sponsored technical project to introduce high speed data radio to amateur radio. HSMM generally uses standard internet protocols, so that regular applications such as web, ftp, email and other applications can run over it without modification. The popular license free 802.11a/b/g services operate on bands that overlap amateur frequency allocations, giving us cheap hardware that can be used in in part 97 operation… when used with care
Immediate EMCOMM Applications
– Echolink
– Winlink 2k
– APRS
– Telpac nodes– Document Storage &
Access– Printer Sharing– IRLP Repeater Links– APRS Internet Feed– Weather Web Sites– Regular Internet Service
– Repeater control
– Video
– Audio– Hospital / EOC
interconnects– Event Management– Custom web
applications– Work flow software– And more!
Major Differences between WI-FI and HSMM
•PART 15 Devices, users, business.
•Limted to 6 Db antennas•Usually have 50-200mW Trancievers•Are NOT FCC Licenced•Have built a businesss based on a very shaky “wild west” type frequency allocation
•Part 97 Devices, Users, applications•Are Limited to 100 watts with APC (automatic power control) into the antenna.•Can use any antenna we can dream up!•Limited to Part 97 Regulations
•Make best effort to keep Part 15 off of network•Can use Authentication Methods to Ensure this, as long as it is publicly posted
Basic Network Elements•Client Access device
•AP – Access Point
•Amplifiers / Antennas – many, many!!!!
Amplifiers
• Picture of the RF Linx amplifier. • Specifications can be found at http://www.rflinx
.com/Amplifiers/2.4GHz-Amplifiers/2400_C_Series.htm
• We purchased them from Fab-corp.com. Make sure to purchase the MMCX to whatever connectors!
• Others can be found on EBAY for BI-Directional AMPS!
Typical setup
A B C D E F G HSELECTED
ON-LINE AP
CONNECT AP WITH CROSSOVER CABLE TO
REGULAR ETHERNET NIC
(RECOMMENDED SETUP)DEDICATED HAM COMPUTER
TO TALK TO HSMM NETWORK.
OTHER METHOD IS TOCONNET AP TO REGULAR HUB
THIS WILL ENABLE ALLCOMPUTERS ON NETWORK TO
ACCESS HSMM NETWORK
A B C D E F G HSELECTED
ON-LINE hub
AP WILL BE SET INMULTIPOINT BRIDGINGMODE ENABLING ALL
AP'S TO SEE ANDCONNECT THE
NETWORK/COMMPUTERS
TOGETHER!
Another AP can be setupfor wireless clients here
inside your shack!
Path surveys are critical in network design!!!!
We are using net stumbler as a signal level and antenna alignment tool.http://www.netstumbler.comWe modified DWL-120+ USB devices to plug into the antenna / amplifier array. This eliminates the need for expensive alignment tools.
Pealed off antenna covering to reveal mini ¼ wave soldered shield and center conductor to N connector
Signal alignment
Fixed Location Installation
Router
WinLinkPMBO
Hub
Public Internet
144.00
APRSDigi / Internet Gateway
144.00
TelpacNode
HSMMBridge
HSMMBridge
HSMMBridge
HSMMBridge
Ham station in an EOC, hospital,club shack, tent, etc...
*graphic= John Beadles – N5OOM – Intro to HSMM –Hamcom 05
Emergency Deployment Access Point
• Net Controls
• Served Agency Liasons
• Weather Liasons
• Health & Welfare Liasons
Access Point for
Local Distribution
Bridge to an internet connection
DSL Router
Computer configured as an EMCOMM Server
Equipment in weatherproof boxes
Power run up the Ethernet cable
*graphic= John Beadles – N5OOM – Intro to HSMM –Hamcom 05
One Possible Digital Network
DentonMcKinney
Plano
Irving
Ft. Worth
Arlington
Dallas Mesquite
Garland
Richardson
I W
R
I
I W
I W
R
I
W
R
I
I
I
R
I
I
W Winlink 2000 PMBO
IRLP Repeater
Internet Router
Public Internet
Wireless Internet Bridge
Short Internet Connection
R
IW
*graphic= John Beadles – N5OOM – Intro to HSMM –Hamcom 05
Radio Metropolitan Area Network(RMAN)
900MHz
5.8 GHz
2.4 GHz
D-star1.2 GHz
EmcommAccess Point
Satellite Uplink
*graphic= John Beadles – N5OOM – Intro to HSMM –Hamcom 05
World Wide example using 44.X.X.X. networking routing and VPN.
Demo Time!
• I will now show you some Live HSMMing!
• Also Appendix has some more technical information on Vendors and Freq allocations.
Vendors• Fleeman, Anderson & Bird
– http://www.fab-corp.com/– Owned by hams in Florida
• Pacific Wireless– http://www.pacwireless.com/
• RF Cables, Inc.– http://allrfcables.com/
• HyperLink Technologies– http://www.hyperlinktech.com/
HAM ALLOCATION
23
90
24
10
24
30
24
00
24
20
24
40
24
50
24
60
25
00
24
90
24
80
24
70
802.11b STANDARD FREQS
Fas
t S
can
TV
2390
- 2
396
Fas
t S
can
TV
2396
- 2
399
Pa
cket
239
9 -
23
99.
5C
ontr
ol L
inks
23
99.
5 -
24
00
Sat
ellit
e24
00 -
240
3
Sat
ellit
e H
i Rat
e D
ata
2403
- 2
408
Sat
ellit
e 24
08 -
241
0
Rep
eat
er 2
5 K
Hz
Out
put
241
0 -
24
13
Hi R
ate
Dat
a24
13 -
241
8
Fas
t S
can
TV
2418
- 2
430
Sat
ellit
e24
30 -
243
3
Sat
ellit
e H
i Rat
e D
ata
2433
- 2
438
WB
FM
, F
ST
V,
FM
TV
, SS
Exp
erim
enta
l24
38 -
245
0
CH
1 -
241
2
CH
3 -
242
2
CH
5 -
243
2
CH
7 -
244
2
CH
9 -
245
2
CH
11
- 2
46
2
CH
2 -
241
7
CH
6 -
243
7
CH
8 -
244
7
CH
10
- 2
45
7
CH
4 -
242
7
Ed
ge -
24
01
Ed
ge -
24
73
• 802.11b channels 1-6 overlap amateur allocations
• AMSAT requests not to use ch 1 due to sat interference
• CH2 center sits right in the middle of high speed data rate subband,
• and does NOT leave the ham bands!!!! Note there are really only 3 non–overlapping
channels in 2.4 GHZ
• 11 overlapping 802.11b/g channels
• 11 MHz wide each, 5 MHz spacing
*graphic= John Beadles – N5OOM – Intro to HSMM –Hamcom 05
2.4 GHZ(802.11b/g)
• 12 non-overlapping 802.11a channels
• 20 MHz wide each
• 3 sets of 4 channels
• 4x40mw ch for indoor
• 4x200mw ch for indoor, outdoor
• 4x800mw ch for outdoor
• Power specified at the IR
• More bandwidth requested
802.11a Standard Frequencies
5745
5765
5785
5805
U-NIIUpper Band
(800mw max)
5180
5220
5200
5240
U-NIILower Band(40mw max)
5260
5280
5300
5320
U-NIIMiddle Band(200mw max)
5470 - 5725 MHzProposed additional U-NII Spectrum
Uns
peci
fied
5650
- 5
925
Pro
paga
tion
Bea
cons
5760
.3 -
576
0.4
5150
5250
5350
5450
5550
5650
5725
5825
5925
Ham Allocation
5 GHz (802.11a)
*graphic= John Beadles – N5OOM – Intro to HSMM –Hamcom 05
Projects for your organization
• http://www.n5oom.org/hsmm/rootenna_project.htm
• Client HSMM AP and Bridge setups.
• Cantenna’s
• Installing and testing field applicaitions for your local and state plans.