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12-1
12 OTHER OPERATIONS
FREQUENCY STEP SIZE
Choosingthecorrectfrequencystepsizeisessentialin
selecting your exact frequency. The default step size on the
144MHzbandis5kHz(TH-D74A)or12.5kHz(TH-D74E).
Thedefaultonthe220MHzbandis20kHz(TH-D74A).The
defaultonthe430MHzbandis25kHz.
1 Press [VFO]toenterVFOmode.
2 Press [A/B] to select band A or B.
3 Press [F], [PF2].
4 Selectyourdesiredstepsizeto[5.0],[6.25],[8.33],[9.0],
[10.0],[12.5],[15.0],[20.0],[25.0],[30.0],[50.0],or[100.0]
kHz.
5 Press [A/B] to store the new setting.
Note:
Each band can have a separate selectable step frequency.
ThestepsizecanbesetinVFOmodeonly.
The step size can not be set in FM broadcasting
8.33kHzcanbeselectedin118MHzbandonly.
9.0kHzcanbeselectedinLF/MF(AMBC)only.
Changingbetweenstepsizesmaycorrectthedisplayed
frequency.Forexample,if144.995MHzisdisplayedwitha
5kHzstepsizeselected,changingtoa12.5kHzstepsize
correctsthedisplayedfrequencyto144.9875MHz.
FINE TUNING
WhenyouoperatetheBandBinLSB,USB,CW,orAM
mode,youcanturntheFineTuningfunctionON.
YoucanfurtherconguretheFineTuningfrequencystepsize
from 20 Hz, 100 Hz, 500 Hz, or 1000 Hz.
To activate the Fine Tuning function:
1 Press [VFO]toenterVFOmode.
2 Select the Band B.
• TheoperatingmodemustbeLSB,USB,CWorAM.
3 Press [F], [MHz],thenset[On].
4 Changethefrequencyusing[ ]/[ ] or rotate the [ENC]
control.
• 100Hzdigitappears.
5 Press [F], [MHz],thenset[Off] to exit Fine Tuning mode.
Note:
YoucannotactivatetheFineTuningfunctionontheA-band.
TheFineTuningfunctiondoesnotworkinDVandFMmode
(FM/WFM/NFM).
WhileinFineTuningmode,youcannotchangethefrequency
step size, MHz mode, and MHz Scan.
SimplyturningtheFineTuningfunctionOFFwillnotchange
the current frequency or display. However, when you change
the frequency, the transceiver will use the currently selected
frequencystepsizeandadjustthefrequencyaccordingly,
removing the transceiver from a finely tuned frequency.
Fine Tuning Frequency Step
YoucanselectFineTuningfrequencystep.
To select the Fine Tuning frequency step size:
1 Select a frequency on the B-band.
2 WhiletheFineTuningmodeisactivated,press[F], [PF2].
• Thecurrentfrequencystepsizeappears.
3 Selectyourdesiredfrequencystepto[20],[100],[500],or
[1000]Hz.
4 Press [A/B] to store the new setting.
Note:
Fine Tuning frequency step can be set separately for each
frequency band.
ATTENUATOR (ATT)
When,forexample,thetargetsignalisdifculttohear
because the other station is too strong or strong signals
exist nearby, it may become easier to hear if you turn on the
attenuator.
1 Press [F], [PF1].
Each press turns the function on or off.
• Whentheattenuatorison,< >isdisplayedinthe
display area at the side of the operation band on the
display.
Note:
< > is not displayed during scanning.
39


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