Bandwidth Selection (Ssb/Cw/Am Modes); Frequency Synthesizer Steps - Yaesu FT-100D Operating Manual

Receiver Operation
BANDWIDTH SELECTION (SSB/CW/AM/DIG MODES)
I. Press the [FUNC] key, as necessary, until Operating Function Row 6 [S.O, 2.4, 500,
300] appears on the display.
2. Now press the [A](S.O) key to select 6.0 kHz, the [B](2.4) key to select 2.4 kHz, the
[C](500) key to select SOO Hz, or the [D](300) key to select 300 Hz bandwidth.
These bandwidth selection options are displayed immediately above the
[A], [B], [C],
and [D] keys along the bottom edge of the display. Note that the [B] bandwidth (2.4
kHz) is installed at the factory, while the other bandwidths require the installation of
optional filters.
It ' ' . ;
Only the 6.0 kHz and 2.4 kHz modes are usable for AM reception, as the 500
~
_ Hz and 300 Hz bandwidths are much too narrow to pass AM signals.
~,
FREQUENCY SYNTHESIZER STEPS
The FT-I 00 uses a "frequency synthesizer" tuning system, which is capable of both coarse
and ultra-fine steps. A wide variety of synthesizer steps is available, so allow you the
flexibility to cope with different operating situations.
The tuning steps will change as you change operating modes. This capability provides
greater convenience during frequency adjustments, as the need for tuning precision is very
different when operating on CW or D1G(AFSK) as compared to FM.
Press the
[STEP]
key momentarily to change the tuning steps of the
MAIN DIAL
and/or
the
SELECT
knob.
[n the case of the
MAIN
DIAL, the
[STEP]
key toggles only the tuning steps utilized in the
SSB, CW, and D1G(AFSK) modes:
1.25
-7
2.5
-7 S -7
10
-7 2S -7 SO -7 100 -7 1.25 ... (Hz)
(The AM/FM steps are fixed at 100 Hz/step in AM/FM, I kHz/step in W-FM)
[n the SSB/CW mode, press and hold the
[STEP]
key for
Yz
second to change the tuning
steps of the
MAIN
DIAL is fixed at I kHz/step.
[n the case ofthe
SELECT
knob. the
[STEP]
key toggles only the tuning steps in the AM
and FM modes, with SSB/CW/D[G being fixed at 10 kHz per step:
AM: I k
-7
5k
-7
9k
-7
10k
-7 12.5k -7 2Sk -7
I k ... (Hz)
FM: 5k
-7
10k
-7
12.Sk
-7
ISk
-7
20k
-7
25k
-7
SOk
-7
S k ... (Hz)
FM-W: 50k
-7 lOOk -7 SOk ... (Hz)
Finally, some preset values for the operation of the
SELECT
knob are also available.
These are especially useful for quick frequency change.
FT-JOO
MICRO MOBILE OPERATING MANUAL
35