Icom IC-7410 Instruction Manual page 105

A very accurate frequency counter is required to cali-
brate the frequency of the transceiver. However, a
rough check may be performed by receiving radio sta-
tion WWV, WWVH, or other standard frequency sig-
nals.
The IC-7410 has been thoroughly ad-
justed and tested at the factory before being
shipped. You should not have to re-calibrate it.
q Push [SSB] once or twice to select the USB mode.
w Push [PBT-CLR] for 1 second to clear the PBT set-
tings and make sure that the RIT/∂TX function is
turned OFF.
e Set the frequency to the standard frequency station
minus 1 kHz.
When receiving WWV or WWVH (at 15.000.00 MHz) as
a standard frequency, set the operating frequency for
14.999.00 MHz.
r Hold down [MENU] for 1 second to enter the Set
mode.
t Push [Y](F-1) or [Z](F-2) to select "Calibration
Marker."
y Rotate [DIAL] to turn ON the calibration marker.
u Push [Z](F-2) to select "REF Adjust."
i Rotate [DIAL] to adjust for a zero beat with the re-
ceived standard signal.
frequency, resulting in a single tone being heard.
o Push [Y](F-1) to select "Calibration Marker."
!0 Rotate [DIAL] to turn OFF the calibration marker.
!1 Push [MENU] to save, and exit the Set mode.
The IC-7410 2-step protection function monitors the
power amplifier temperature and activates when the
temperature becomes extremely high.
Halves the transmit output power.
"LMT" appears above the TX icon "
Deactivates the transmitter.
Even if you push [PTT] or [TRANSMIT], the TX indica-
tor does not light.
When the protector is activated, operate in only the
stand-by or receive mode until the power amplifier
cools down.
turn OFF the transceiver power
when the protector is ON, or the cooling fan will not
function, and delay cooling the transceiver.
." (p. 11)
MAINTENANCE
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[ ] [ ]
SET C a l i b r a t i o n M a r k e r
Ù Ú
47
SET R E F A d j u s t
Ù Ú
48
13
[PBT-CLR]
[DIAL] [ ] [ ]
O F F
5 0 %
98
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