liberally adapted by broadcast signal lab from copyright material submitted by kenwood, with...

Liberally adapted by Broadcast Signal Lab from copyright material submitted by Kenwood, with permission

Simulation of Universal Band Numbering Scheme

An expansion on the Cox concept to include main channel


Simulation• Analog and digital main program FM channels are in the 88.1 to 107.9 band

– Scan is simulated from 88.9 to 92.3• The simulated FM band segment has four stations,

– two that are HD with supplemental channels • 89.5 [main and 1 supplemental] and • 92.1 [main and 2 supplementals] and

– two analog only (90.3 and 91.3).• It takes 1.5s to check a frequency position (89.1, 89.3, etc.)• Scan algorithm stops for 3s when audio is found, then moves on• Main and Supplemental channels are numbered with a 2xx.x channel number according to the

following scheme:– All programs, whether analog or hybrid, or all digital (future) can be found by frequency (e.g. 89.5)– Digital main channel programs are also identified by FM channel number and the suffix .1 (e.g. 215.1)– Analog main channel programs can be identified by the digital radio using the same scheme, but with a .0

(point zero) suffix to the channel number (e.g. 221.0) Stations will never have a .0 (analog) and a .1 channel simultaneously (main digital, including blend to analog)

– Supplemental programs are given a .2 -.9 suffix to the channel number– Three channels (including main) on 89.9 would be numbered this way: 210.1, 210.2, 210.3– Three channels (including main) on 107.9 would be numbered: 300.1, 300.2, 300.3– Numbering should be permitted to be discontinuous: 210.1, 210.2, 210.5– If there were a need to differentiate the decimal in the channel number from the decimal in the frequency,

we could adopt the “dot” convention and encourage radios to display a different kind of dot (square?)• “That’s available on three hundred dot two on your digital radio.”

• View this PPT in Slide Show mode to see the timing and display


• View in Slide Show Mode with PC audio turned on• Click mouse one time to start (if you click more than

once, you’ll see the end immediately)• This simulates a display with about 16 characters

Automatically scanning using FM analog, HD Radio, & Multicasting

88.7 c204 88.9 c205 89.1 c206 89.3 c207 89.5 c208.1ALL THING c208.1 89.5 LINK c208.2MORNING c208.2 89.7 c209 89.9 c210 90.1 c211 90.3 c212.0 90.5 c213 90.7 c214 90.9 c215 91.1 c216 91.3 c217.0 91.5 c218 91.7 c219 91.9 c220 92.1 c221.1ALL THING c221.1 92.1 LINK c221.2MORNING Ec221.2ALL THING c221.3 92.3 c222


Compressed display of frequency and channel “dot-number”

92.1 c.2


Compressed display with channel number

c221.1


Compressed display with channel name

HOT HITS


Compressed display with station name

HIT 92


Compressed display with station name (as call sign)

WHIT


Extensibility• Channel Numbering is unique and does not overlap AM or FM

frequencies.• Channel numbering permits up to 9 streams to include, as well as

MPS and SAS, streams such as might be carried via ADS audio streams and other transports in the future.

• Supplemental channel numbers should be able to be assigned by the broadcaster to a particular stream, potentially leaving gaps in the numbering sequence as program services evolve.

• Future expansion would create a means to identify other audio transported on the station’s signal that would be assigned to unused numbers .2-.8 or to .9. If a total of nine stream numbers is not enough, the .9 value could be reseved as an extendable value to remain unused until later expanded.

liberally adapted by broadcast signal lab from copyright material submitted by kenwood, with...

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