Transcript NARROWBAND ANALOG OPERATION WHAT IS NARROWBANDING? • DIVIDING OF FREQUENCIES IN ½ WIDEBAND = 25 KHz NARROWBAND = 12.5 KHz NARROWBAND = 12.5 KHz.

NARROWBAND
ANALOG OPERATION
WHAT IS NARROWBANDING?
• DIVIDING OF FREQUENCIES IN ½
WIDEBAND = 25 KHz
NARROWBAND = 12.5 KHz
NARROWBAND = 12.5 KHz
IN WIDEBAND WE HAD
TOTAL OF 480 FREQUENCIES AVAILABLE
TO ALL FEDERAL GOVERNMENT AGENCIES
IN NARROWBAND WE NOW HAVE
TOTAL OF 960 FREQUENCIES AVAILABLE TO
ALL FEDERAL GOVERNMENT AGENCIES
AVIATION COMM 2005
• AS OF 1/1/2005 – NARROWBAND
ANALOG OPERATION FOR FIRE
• COOPERATOR CHANNELS CAN STILL
BE PROGRAMMED IN WIDEBAND ON
THEIR FREQUENCIES
• ALL RECEIVERS SHOULD BE MULTIMODE IN NEW APCO PROJECT 25
RADIOS FROM NOW ON
• DIGITAL IS NEW TECHNOLOGY THAT WILL
ALLOW FURTHER SPLITTING OF
FREQUENCIES AND WILL PROVIDE FOR
MORE FLEXIBILITY, MORE FEATURES, AND
CLEARER COMMUNICATIONS
• DIGITAL NOT REQUIRED AT THIS TIME FOR
FIRE OPERATIONS
• AIRCRAFT INVOLVED IN LAW
ENFORCEMENT OPERATIONS MOST LIKELY
TO USE DIGITAL AT THIS TIME
• APCO PROJECT 25 DIGITAL TECHNOLOGY
DEVELOPMENT STARTED IN 1993. ALL
AGENCIES NOTIFIED THEN. MANDATE TO
GO NARROWBAND PRESENTED IN 1995 TO
ALL AGENCIES
THINGS TO REMEMBER
• NARROWBAND VS WIDEBAND
– OLDER RADIOS THAT ARE NARROWBAND
ANALOG CAPABLE HAVE TO BE
PROGRAMMED TO NARROWBAND, THEN
TUNED ACCORDINGLY TO WORK
PROPERLY
– ISSUE CREATED WHEN RADIOS NOT
PROPERLY SET-UP
• NARROW TO WIDE = AUDIO LOW, TURN UP
VOLUME ON WIDEBAND RADIO
• WIDE TO NARROW = AUDIO LOUD, TALK INTO
WIDEBAND RADIO WITH MIC TURNED
SIDEWAYS SPEAK ACROSS MIC NOT
DIRECTLY INTO IT
• NEW RADIOS ARE CAPABLE OF
OPERATING IN WIDEBAND &
NARROWBAND ANALOG &
NARROWBAND DIGITAL ON PER
CHANNEL BASIS
– WHEN PROGRAMMED PROPERLY NEW
APCO Project 25 RADIOS WILL OPERATE
IN ALL CURRENT SYSTEMS
• USERS SHOULD SET COOPERATOR
CHANNELS TO MATCH COOPERATOR
SYSTEMS
• RADIO USER RESPONSIBILITY:
– THAT ONCE SET, NOT TO CHANGE
FUNCTIONAL PROGRAMMING ON THE
RADIO DURING OPERATIONS. ONLY
CHANGE FREQUENCIES AND GUARD
TONES.
– TO MAKE SURE RADIOS ARE UPDATED
WITH CURRENT VERSIONS OF
SOFTWARE.
• NIFC-NIICD WEBSITE
– www.fs.fed.us/fire/niicd/Hotsheet/Hotsheet.html
• SELECT: RADIO SOFTWARE VERSIONS
• PHONE CONTACT: 208 387 5719
NEW AM ASSIGNMENTS
• WITH THE SHORTAGE OF AM
FREQUENCIES, ASSIGNMENTS ABOVE
135.975 WILL HELP TO ADD MORE
CAPABILITY FOR FIRE
• DURING TRANSITION TO 760 RADIOS,
ASSIGNMENTS WILL HAVE TO BE
MADE TO ACCOMMODATE LOWEST
COMMON DENOMINATOR WHEN
NECESSARY