Icom IC-707 Instruction Manual page 19

1 kHz tuning step
The operating frequency can be changed in 1 kHz
steps for quick tuning.
1) Push the [TS] switch several times until "w"
appears on the 1 kHz digit.
When 1 kHz tuning
step is selected.
HF ham bands and propagation
characteristics
Allocated frequency ranges vary according to coun-
try. Refer to your radio law rule book for details.
Region 1
Perl
WMA
3.5 MHz
1.81 MHz
2.0 MHz
LLL
10.1 MHz
LLL
10.15 MHz
14.0 MHz
14.35 MHz
18.068 MHz
Willy,
24.89 MHz
Wl,
24.99 MHz
18.168 MHz
21.0 MHz
21.45 MHz
28.0 MHz
29.7 MHz
Europe
CIS
Africa
10.15 MHz
14.0 MHz
14.35 MHz
18.068 MHz
18.168 MHz
21.0 MHz
21.45 MHz
24.89 MHz
24.99 MHz
28.0 MHz
29.7 MHz
Region 2
Witt,
Wd,
Yi,
=
Wht,
North &
South
America
Region 3
AAU,
=
Whi,
Yi
Witt
21.0 MHz
21.45 MHz
24.89 MHz
WL,
~
Asia |
Oceania
24.99 MHz
28.0 MHz
29.7 MHz
4
OPERATION 3
2) Rotate the main dial to change the frequency.
3) Push the [TS] switch 3 times until "w" disap-
pears.
4) Rotate the main dial for fine tuning if required.
NOTE: When AM or FM mode is selected, the 1
kHz tuning step is automatically selected. When
fine tuning is required, push the [TS] switch sev-
; eral times until "w" disappears.
1.8 MHz (160 meters)
Primarily a nighttime band. Daytime com-
munication is limited to about 100 km.
Winter is best for DX'ing.
3.5 MHz (80 meters)
Nighttime communication up to several
thousand km. Daytime is limited to about
300 km. Winter is best for DX'ing.
7 MHz (40 meters)
Daytime up to about 700 km.
worldwide communication at night.
Reliable
10 MHz (30 meters)
Good day and nighttime propagation. Half-
way around the world at night.
14 MHz (20 meters)
Traditional long range DX band. Relatively
unaffected by solar activity.
18 MHz (17 meters)
Reliable long distance communications
from daytime to early evening.
21 MHz (15 meters)
Large variations in propagations. Daytime
band but sometimes open 24 hrs.
24 MHz (12 meters)
Mainly daytime band but with high solar
activity open well into the night.
28 MHz (10 meters)
During high solar activity, worldwide propa-
gation is possible at low powers.