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.