Icom IC-7600 Instruction Manual - Page 45

RECEIVE AND TRANSMIT, ■ Functions for CW operation, ◇ About CW reverse mode - usb audio level

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4 RECEIVE AND TRANSMIT ■ Functions for CW operation D About CW reverse mode CW-R (CW Reverse) mode uses the opposite side band to receive CW signals. Use when interfering signals are near a desired signal and you want to use CW-R to reduce the interference. ➥ D uring CW mode, push [CW] to select CW and CW-R mode. D About CW pitch control The received CW audio pitch and CW sidetone can be adjusted to suit your preference (from 300 to 900 Hz; in 5 Hz steps). This does not change the operating frequency. ➥ Rotate [CW PITCH] to suit your preference. • Adjustable within 300 to 900 Hz. The filter set screen graphically displays the CW pitch operations. (See at right.) ➥ Push and hold [FILTER] for 1 sec. to access the filter set screen. • The CW pitch frequency is graphically changed in 5 Hz steps when the selected IF filter passband width is below 500Hz (" " appears), or in 25 Hz steps when the selected IF filter passband width is above 600Hz (" " disappears). • Push [EXIT/SET] or push and hold [FILTER] for 1 sec. to return to the previous screen. D CW sidetone function When the transceiver is in receive (and the break-in function is OFF- p. 85) you can listen to the CW sidetone without actually transmitting. This allows you to match your transmit frequency exactly to another station's by matching the audio tone. You can also use the CW sidetone (be sure to turn OFF break-in!) to practice CW sending. CW sidetone level can be adjusted in level set mode (p. 122). q P ush [SET] (F-6), then push [LEVEL] (F-1) to select level set mode. w P ush [Y] (F-1) or [Z] (F-2) to select "Side Tone Level" item. e Rotate the main dial to adjust the sidetone level. • Sidetone level is adjustable within 0 to 100 % in 1% steps. r Push [EXIT/SET] to exit display set mode. Matching the frequency of a transmitted and received signal is called "Zero beat." Push BFO Interference Desired signal CW mode (LSB side) BFO Interference Desired signal CW-R mode (USB side) Lower frequency • Filter set screen [CW PITCH] Higher frequency CW pitch frequency (e.g. 700 Hz) F-1 LEVEL / F-2 F-6 EXIT/SET SET Main dial 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 38

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■
Functions for CW operation
D
About CW reverse mode
CW-R (CW Reverse) mode uses the oppos±te s±de
band to rece±ve CW s±gnals.
Use when ±nterfer±ng s±gnals are near a des±red s±g-
nal and you want to use CW-R to reduce the ±nterfer-
ence.
➥
Dur±ng CW mode, push
[CW]
to select CW and
CW-R mode.
D
About CW pitch control
The rece±ved CW aud±o p±tch and CW s±detone can
be adjusted to su±t your preference (from 300 to
900 Hz; ±n 5 Hz steps). Th±s does not change the
operat±ng frequency.
➥
Rotate
[CW PITCH]
to su±t your preference.
• Adjustable w±th±n 300 to 900 Hz.
The f±lter set screen graph±cally d±splays the CW
p±tch operat±ons. (See at r±ght.)
➥
Push and hold
[FILTER]
for 1 sec. to access the
f±lter set screen.
• The CW p±tch frequency ±s graph±cally changed ±n
5 Hz steps when the selected IF f±lter passband
w±dth ±s below 500Hz (“
” appears), or ±n 25 Hz
steps when the selected IF f±lter passband w±dth ±s
above 600Hz (“
” d±sappears).
• Push
[EXIT/SET]
or push and hold
[FILTER]
for 1
sec. to return to the prev±ous screen.
D
CW sidetone function
When the transce±ver ±s ±n rece±ve (and the break-±n
funct±on ±s OFF— p. 85) you can l±sten to the CW s±d-
etone w±thout actually transm±tt±ng.
Th±s allows you to match your transm±t frequency
exactly to another stat±on’s by match±ng the aud±o
tone. You can also use the CW s±detone (be sure to
turn OFF break-±n!) to pract±ce CW send±ng.
CW s±detone level can be adjusted ±n level set mode
(p. 122).
q
Push
[SET] (F-6)
, then push
[LEVEL] (F-1)
to
select level set mode.
w
Push
[
Y
] (F-1)
or
[
Z
] (F-2)
to select “S±de Tone
Level” ±tem.
e
Rotate the ma±n d±al to adjust the s±detone level.
• S±detone level ±s adjustable w±th±n 0 to 100 % ±n 1%
steps.
r
Push
[EXIT/SET]
to ex±t d±splay set mode.
Match±ng the frequency of a transm±tted and
rece±ved s±gnal ±s called “
Zero beat
.”
Push
BFO
CW-R mode (USB side)
BFO
Desired signal
CW mode (LSB side)
Interference
Desired signal
Interference
[CW PITCH]
Lower frequency
Higher frequency
• Filter set screen
CW pitch frequency (e.g. 700 Hz)
Main dial
F-1
F-2
F-6
EXIT/SET
SET
LEVEL /
4
38
RECEIVE AND TRANSMIT
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