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Icom IC-746 Instruction Manual

Icom IC-746
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77
13
OPTIONAL INSTALLATIONS
13-3
CR-282
HIGH STABILITY
CRYSTAL UNIT
By installing the CR-282, the total frequency stability
of the the transceiver will be improved.
Remove the bottom cover as shown on the page op-
posite.
Turn the transceiver upside down. Remove 8 screws
from the PLL UNIT, disconnect J121 and J151, then
remove the PLL UNIT.
Remove the supplied internal crystal and replace
with the CR-282.
Adjust the reference frequency using a frequency
counter.
Return the PLL UNIT and bottom cover to their orig-
inal positions.
;@À
J
701
UT-
102
Connect a frequency counter here
and adjust the frequency to 60.00000 MHz.
J
262
J
151
J
121
Internal crystal
PLL UNIT
CR-
282
L
1901
2
LO IN
The UT-102 announces the accessed readouts fre-
quency, mode, etc. (S-meter level can also be an-
nouncedp. 63) in a clear, electronically-generated
voice, in English (or Japanese).
Remove the bottom and shield covers.
Remove the protective paper attached to the bottom
of the UT-102 to expose the adhesive strip.
Plug UT-102 into J701 on the MAIN UNIT as shown
at left.
Return the top and shield covers to their original po-
sitions.
13-2
UT-102
VOICE SYNTHESIZER UNIT

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Icom IC-746 Specifications

General IconGeneral
ModeSSB, CW, RTTY, AM, FM
Receiver TypeDouble conversion superheterodyne
Antenna ConnectorSO-239
Voltage13.8 V DC ±15%
Impedance50 ohms
Output Power100 W (SSB, CW, FM, RTTY), 40 W (AM)
Current DrainTX: 20 A
SensitivityAM: 2 µV
SelectivityCW: 500 Hz (-6 dB)

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