Icom IC-7610

84
11. OTHER FUNCTIONS
REF adjustment
You can perform a rough frequency calibration by
receiving the radio station WWV, WWVH, or other
frequency signals.
NOTE:
• The transceiver has been adjusted and tested at
the factory before being shipped out. You should
not have to recalibrate.
• Before performing a frequency calibration, you
have to set “Calibration Marker” to ON.
• Spurious signal waveforms may be displayed while
the Calibration Marker is ON.
L Before performing a frequency calibration, set the
following items as described in the table below.
Operating mode
USB
AF RF/SQL
Decent audibility
AF RF/SQL

TWIN PBT
CLR
Reset by holding down for 1 second.
RIT
,
TX
OFF (No icon)
1. Set the frequency to the standard frequency
station minus 1 kHz.
L If receiving WWV or WWVH (at 15.00000 MHz) as
your standard frequency, set the operating frequency
to 14.99900 MHz.
2. Set “Calibration Marker” to ON.
MENU
» SET > Function > Calibration Marker
3. Select the “REF Adjust” item.
MENU
» SET > Function > REF Adjust
4. Rotate
MULTI
to adjust for a zero beat with the
received standard signal.
L
are set to 2 signals, resulting in a single tone being
transmitted.
5. Set “Calibration Marker” to OFF.
6. Push
EXIT
several times until the MENU screen
is closed.