75
5
FUNCTIONS FOR RECEIVE
N4WIN0"4OPERATION
-ODE33"#72449!-
To r ej ect i n te rfe ren ce, PB T ( Pas s ba n d Tun in g) ele c-
tronically narrows the IF passband width by shifting the
IF frequency slightly outside of the IF filter passband.
The IC-9100 uses DSP for the PBT function. Moving
both [TWIN-PBT] controls shift the IF passband cen-
ter frequency both above and below the received fre-
quency.
± The LCD graphically shows the passband width and
frequency shift.
± Hold down [FILTER] for 1 second to display the “FIL”
screen (Filter). Current passband width and fre-
quency shift are displayed in the “FIL” screen.
± Hold down [PBT-CLR] for 1 second to set the IF
frequency to the center position.
s4HEhDOTvDISAPPEARS
The PBT is adjustable in 50 Hz steps in the SSB/CW/
2449MODESAND(ZINTHE!-MODE
In this time, the shift value changes in 25 Hz steps
INTHE33"#72449MODESAND(ZINTHE!-
mode.
s4HE;47).0"4=CONTROLSSHOULDNORMALLYBESET
to the center positions when there is no interfer-
ence. The PBT setting should be cleared.
s7HEN THE 0"4 IS USED THE AUDIO TONE MAY
change.
s4HECONTROLS DO NOTFUNCTION IN THE&- AND $6
modes.
s7HILEROTATINGTHE;47).0"4=CONTROLSNOISEMAY
occur. This comes from the DSP unit and does not
indicate an equipment malfunction.
s0USHING;0"4#,2=DISPLAYSTHElLTERPASSBAND
width and shift value for 1 seconds on the function
display.
sh&),v SCREEN&ILTERDISPLAY
s7HILEADJUSTINGTHE0"4SETTING
Appears when the passband is shifted.
Shows the selected filter and passband width.
0"4/0%2!4)/.%8!-0,%
Both controls in the center
positions (or hold down
[PBT-CLR] for 1 second.)
Cutting the lower
passband edge
Cutting both lower and
higher passband edges
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