‰  NOW 40 WPM  ‰  TEXT IS FROM MAY 2015 QST  PAGE 35 ‰

BE REMOVED.  THIS IS TO AVOID DAMAGE CAUSED BY A LOOSE OR BROKEN BATTERY
CONNECTION.  WITHOUT THE FUSE, DEPENDING ON THE LOCATION OF THE BATTERY
LEAD FAILURE, YOU COULD DAMAGE THE TRANSCEIVER.  NOTES 1 PASSIVATED GLASS
CONTAINS METALLIC PARTICLES THAT ACT AS UVA, UVB, AND RF SHIELDS.  2 THE
ALGORITHMS EMPOWERING BATTERY MONITORING SYSTEMS BMS ARE SOPHISTICATED
SOFTWARE PROGRAMS.  THEYRE SMART ENOUGH TO KNOW WHEN THE STATE OF CHARGE OF
THE BATTERY ISNT WHAT IT SHOULD BE.  IT 

RADIO EQUIPMENT.  INTERFERENCE POTENTIAL GOES BOTH WAYS  DIGITAL SIGNALS
ARE RICH IN HARMONIC CONTENT, AND OFTEN GENERATE PERIODIC BIRDIES AND HASH
WELL INTO THE VHF SPECTRUM.  THESE SIGNALS INTERFERE WITH OUR ABILITY TO
HEAR, PARTICULARLY WHEN USING SSB, ALTHOUGH FM RECEPTION CAN BE AFFECTED
TOO.  PERHAPS MORE IMPORTANTLY, MOBILE TRANSMISSIONS CAN INTERFERE WITH THE
VARIOUS SENSORS FEEDING DATA TO THEIR RESPECTIVE CPUS.  THIS IS
PARTICULARLY THE CASE WHEN EXCESSIVE COMMON MODE CURRENT FLOWS ON OUR FEED
LINES COAX.  WE SHOULD NOTE THAT THE CPUS THEMSELVES ARE DESIGNED AND
RIGOROUSLY TESTED TO REJECT RFI WELL INTO THE GHZ SPECTRUM.  ALTHOUGH
EXEMPT FROM FCC PART 15 RULES, AUTOMOBILE MANUFACTURERS DO THEIR BEST TO
LIVE UP TO THE PART 15 REQUIREMENTS.  IT IS ONE OF THE REASONS WHY
PASSIVATED GLASS IS USED IN MODERN PASSENGER VEHICLES.  ENGINE IDLE SHUTOFF
ONE OF THE LATEST AUTOMOTIVE INNOVATIONS IS EIS ENGINE IDLE SHUTOFF.  IN
SHORT, YOU PULL UP TO A RED TRAFFIC LIGHT, AND THE ENGINE SHUTS OFF.  WHEN
THE TRAFFIC LIGHT TURNS GREEN, YOU LET OFF THE BRAKE, THE ENGINE RESTARTS,
AND AWAY YOU GO.  BEHIND THE SCENES ARE REQUISITE HARDWARE CHANGES THAT

THE MODERN MOBILE RETHINK HOW MOBILE AMATEUR RADIOS CONNECT TO MODERN
ELECTRONICS LADEN VEHICLES.  ALAN APPLEGATE, K0BG  MODERN VEHICLES ARE
ROLLING COMPUTERS, WITH SOME MODELS HAVING MORE THAN 100 CPUS CONTROLLING
EVERY CONCEIVABLE FACET OF VEHICLE OPERATION.  THE ENGINE CONTROL COMPUTER,
COLLISION AVOIDANCE SYSTEM, THE STABILITY AND TRACTION CONTROL SYSTEM, THE
NAVIGATION SYSTEM, HEATING AND AIR CONDITIONING, AND ABS AUTOMATIC BRAKING
SYSTEM ALL CONTAIN CPU BASED CONTROLLERS.  FURTHERMORE, EACH AND EVERY ONE
HAS A SET OF SENSORS FEEDING THEM INPUT DATA, MUCH LIKE A KEYBOARD ON A PC.
BY NECESSITY, ALL OF THESE CPUS ARE TIED TOGETHER VIA MULTIPLE DATA BUS
SYSTEMS LANS LOCAL AREA NETWORKS IN OTHER WORDS.  GOOD EXAMPLES ARE THE
WHEEL SPEED SENSORS.  THEY FEED DATA OVER A LAN TO BOTH THE VEHICLE
STABILITY SYSTEM AND THE ABS, BECAUSE THESE SYSTEMS MUST INTERACT.  BESIDES
THE LANS, WANS WIDE AREA NETWORKS ARE BECOMING COMMON.  THE BEST EXAMPLES
ARE GMS ONSTAR AND FORDS SYNC.  THEYRE THE MOBILE EQUIVALENT TO A HOME WI
FI, AND ARE COLLECTIVELY REFERRED TO AS TELEMETRICS.  WHILE NOT WIDELY
IMPLEMENTED, THESE WANS ARE ALSO CAPABLE OF TRANSMITTING OPERATING DATA TO
A REMOTE SITE.  FUTURISTICALLY SPEAKING, THEY COULD TELL A LOCAL LAW
ENFORCEMENT OFFICER THAT YOURE SPEEDING.  ASIDE FROM THE BIG BROTHER ASPECT
OF MOBILE COMPUTERIZATION, THIS COMPLICATES THE INSTALLATION OF AMATEUR
‰  END OF 40 WPM TEXT  ‰  QST DE W1AW  ƒ