Internal Settings; Before Internal Settings; Mode Switch; Preset Tuning - Icom AT-130 Instruction Manual

3

INTERNAL SETTINGS

n Before internal settings
Before operation, preset tuning setting and emer-
gency tuning setting are required.
What is preset tuning
Preset tuning setting provides fast tuning on your
most-used frequency.
n Mode switch
According to the mode switch (S1), the AT-130/E op-
erates as follows:
Mode Position
PRESET Upper
NORMAL Center
OFF Lower
After internal settings are performed, select the mode
switch (S1) to NORMAL mode (center position).
n Preset tuning
R WARNING!
NEVER touch internal parts while
transmitting. Stop transmitting when internal adjust-
ments are performed.
q Connect an SWR meter between an HF trans-
ceiver and the AT-130/E.
w Confirm the mode switch (S1) is in NORMAL mode
(center position).
e Select your most-used operating frequency.
r Push the [TUNE] switch on the HF transceiver.
• When the AT-130/E succeeds in automatic tuning, an
LED (DS24) lights up.
• Confirm that SWR reading is less than 2:1.
t Make a note of which LED's (DS1–DS23) light up.
y Select S1 to PRESET mode (upper position).
u Select the preset switches (S3, S4, S5) so that the
same LED's light up as in step 5).
i Select S1 to NORMAL mode (center position).
7 7
Description
Used only for preset tuning. Refer
below for details.
Operates in automatic tuning. For
fast tune up, preset switches (S3,
S4, S5) information is also used.
Operates in automatic tuning
only. This mode is for some non-
Icom HF transceivers. Refer to
page 9 for details.
What is emergency tuning
The Europe version, AT-130E, includes an emer-
gency tuner circuit for 2182 kHz operation separated
from the automatic tuner circuit. If any signal from
the control cable becomes abnormal, the emergency
tuner is automatically selected.
Mode switch (S1) location
o Replace tha top cover of the AT-130.
• For the AT-130E, perform emergency tuning settings.
Switch and LED locations
S1
PRESET mode
NORMAL mode
DS24
Switch and LED relationship
S3–1 DS16 S4–1 DS9 S5–1 DS1
S3–2 DS17 S4–2 DS10 S5–2 DS2
S3–3 DS18 S4–3 DS11 S5–3 DS3
S3–4 DS19 S4–4 DS12 S5–4 DS4
S3–5 DS20 S4–5 DS13 S5–5 DS5
S3–6 DS21 S4–6 DS15 S5–6 DS6
S3–7 DS22 S4–7 DS14 S5–7 DS7
S3–8 DS23 — —
PRESET mode
NORMAL mode
OFF mode
S1
DS1−DS23
S3 S5
S4
OFF position:
Lights up
ON position:
Goes out
S5–8 DS8