Mazda CX-5 2018 - FM Characteristics; Multipath Noise; Flutter;Skip Noise

)0FKDUDFWHULVWLFV
$Q)0EURDGFDVWUDQJHLVXVXDOO\DERXW
ʊNPʊPLOHVIURPWKH
VRXUFH%HFDXVHRIH[WUDFRGLQJQHHGHGWR
EUHDNWKHVRXQGLQWRWZRFKDQQHOVVWHUHR
)0KDVHYHQOHVVUDQJHWKDQPRQDXUDO
QRQVWHUHR)0
FM Station
40—50km
(25—30 miles)
6LJQDOVIURPDQ)0WUDQVPLWWHUDUHVLPLODU
WREHDPVRIOLJKWEHFDXVHWKH\GRQRWEHQG
DURXQGFRUQHUVEXWWKH\GRUHIOHFW8QOLNH
$0VLJQDOV)0VLJQDOVFDQQRWWUDYHO
EH\RQGWKHKRUL]RQ7KHUHIRUH)0
VWDWLRQVFDQQRWEHUHFHLYHGDWWKHJUHDW
GLVWDQFHVSRVVLEOHZLWK$0UHFHSWLRQ
AM wave
FM wave
FM wave
100—200 km (60—120 miles)
Ionosphere
$WPRVSKHULFFRQGLWLRQVFDQDOVRDIIHFW
)0UHFHSWLRQ+LJKKXPLGLW\ZLOOFDXVH
SRRUUHFHSWLRQ+RZHYHUFORXG\GD\VPD\
SURYLGHEHWWHUUHFHSWLRQWKDQFOHDUGD\V
0XOWLSDWKQRLVH
6LQFH)0VLJQDOVFDQEHUHIOHFWHGE\
REVWUXFWLRQVLWLVSRVVLEOHWRUHFHLYHERWK
WKHGLUHFWVLJQDODQGWKHUHIOHFWHGVLJQDODW
WKHVDPHWLPH7KLVFDXVHVDVOLJKWGHOD\
LQUHFHSWLRQDQGPD\EHKHDUGDVDEURNHQ
VRXQGRUDGLVWRUWLRQ7KLVSUREOHPPD\
DOVREHHQFRXQWHUHGZKHQLQFORVH
SUR[LPLW\WRWKHWUDQVPLWWHU
Reflected wave
Direct
)OXWWHU6NLSQRLVH
6LJQDOVIURPDQ)0WUDQVPLWWHUPRYHLQ
VWUDLJKWOLQHVDQGEHFRPHZHDNLQYDOOH\V
EHWZHHQWDOOEXLOGLQJVPRXQWDLQVDQG
RWKHUREVWDFOHV:KHQDYHKLFOHSDVVHV
WKURXJKVXFKDQDUHDWKHUHFHSWLRQ
FRQGLWLRQVPD\FKDQJHVXGGHQO\UHVXOWLQJ
LQDQQR\LQJQRLVH
,QWHULRU)HDWXUHV
$SSHQGL[
