D Convenient functions for transmit
• Break-in function (p. 6-3)
➥ Push [VOX/BK-IN] several times to select the
break-in OFF, semi break-in and full break-in.
• "BK IN" or "F-BK IN" appears when the semi break-in
or full break-in function is ON, respectively.
l About the 5 MHz frequency band operation (USA version only)
See page 4-3 for details.
D About CW reverse mode
BFO
Interference
Desired signal
CW mode (LSB side)
D About CW pitch control
• Example for the CW pitch frequency display
CW pitch frequency (Example: 600 Hz)
D CW side tone function
Push
BFO
Interference
Desired signal
CW-R mode (USB side)
[CW PITCH]
RECEIVE AND TRANSMIT
CW-R (CW Reverse) mode uses the opposite side
band to receive CW signals.
Use when interfering signals are near a desired sig-
nal and you want to use CW-R to reduce the interfer-
ence.
➥ During CW mode, push [CW] to select CW and
CW-R mode.
The received CW audio pitch and CW side tone can
be adjusted to suit your preference (from 300 to 900
Hz in 5 Hz steps). This does not change the operat-
ing frequency.
➥ Rotate [CW PITCH] to suit your preference.
• Adjustable within 300 to 900 Hz in 5 Hz steps.
✔ For your convenience
The filter set screen graphically displays the CW pitch
operations. (See at left.)
➥ Hold down [FILTER] for 1 second to access the fil-
ter set screen.
• The CW pitch frequency is graphically changed in 5 Hz
steps when the selected IF filter passband width is
below 500 Hz ("
the selected IF filter passband width is above 600 Hz
("
" disappears).
• Push [EXIT/SET] or hold down [FILTER] for 1 second to
return to the previous screen.
When the transceiver is in the receive condition (and
the break-in function is OFF— p. 6-3) you can listen to
the CW side tone without actually transmitting.
This allows you to match your transmit frequency ex-
actly to another station's by matching the audio tone.
You can also use the CW side tone (be sure to turn
OFF break-in!) to practice CW sending. CW side tone
level can be adjusted in level set mode (p. 12-5).
4-5
" appears), or in 25 Hz steps when
4
Need help?
Do you have a question about the IC-7800 and is the answer not in the manual?
Questions and answers
My 7800 automatically goes into Split mode when transmitting on the "Main" side of the radio. It transfers the Main frequency to the "Sub" frequency, goes into split mode and transmits on the Sub side of the radio. What Causes that and how do I cancel that?