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Icom IC-7851 - Page 85

Icom IC-7851
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5-8
5
RECEIVE AND TRANSMIT
Operating CW (Continued)
D
About 137 kHz band operation (Europe version only)
The 137 kHz band, between the 135.7 kHz to 137.8
kHz, operation in the CW mode is optionally available.
The RF signal from [X-VERTER] is used for the 137
kHz band operation, and an external amplifier unit is
necessary.
See the connection diagram below for reference.
L
B
PA
BPF
or
LPF
Power amplifier with T/R switching unit
for 137 kHz
to [X-VERTER]
to [RELAY] (for transmit/receive control)
to [ACC 2] pin 6*
• Connection diagram for 137 kHz band operation
NOTE: Set the transverter offset in the Others
set mode to “0.000 MHz.
See page 15-14 for details.
* Transverter ON/OFF control signal related to the power
amplifier unit main power, if desired.
• ON: 2 ~ 13.8 V DC input (more than 10 k impedance)
• OFF: Less than 2 V DC

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