Icom ID-51A Advanced Instructions page 306

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Function items (Continued)
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CI-V Transceive
Function > CI-V > CI-V Transceive (CI-V Transceive)
Turn the CI-V Transceive function ON or OFF.
• OFF : Turns the function OFF.
• ON : When you change a setting on the transceiver, the same change is
automatically set on other connected transceivers or receivers, and
vice versa.
Heterodyne
Function > Heterodyne (Heterodyne)
Set the 1st Local Oscillator frequency.
Depending on a combination of the two operating frequencies in the VHF/
UHF Dualwatch mode, the transceiver might generate a spurious signal on
a specific receive frequency. This may cause the S-meter to fluctuate, even
when no signal is received, for example.
If this occurs, the Heterodyne function may help. The Heterodyne function
shifts the 1st Local Oscillator frequency to the opposite side of the signal to
change the frequency combination.
Charging (Power ON)
Function > Charging (Power ON) (Charging (Power ON))
When the battery pack is attached, and the optional CP-12L, CP-19R or
OPC-254L external DC power cable is connected, this function enables
charging the transceiver's battery even if the power is ON.
• OFF : The transceiver's battery cannot be charged when the power is ON.
• ON : The transceiver's battery can be charged even if the power is ON.
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(Default: OFF)
(Default: Normal)
(Default: OFF)