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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.
➀
Remove the bottom cover as shown on the page op-
posite.
➁
Turn the transceiver upside down. Remove 8 screws
from the PLL UNIT, disconnect J121 and J151, then
remove the PLL UNIT.
➂
Remove the supplied internal crystal and replace
with the CR-282.
➃
Adjust the reference frequency using a frequency
counter.
➄
Return the PLL UNIT and bottom cover to their orig-
inal positions.
;
@
À
J701
UT-102
Connect a frequency counter here
and adjust the frequency to 60.00000 MHz.
J262
J151
J121
Internal crystal
PLL UNIT
CR-282
L1901
2LO IN
The UT-102 announces the accessed readout’s fre-
quency, mode, etc. (S-meter level can also be an-
nounced—p. 63) in a clear, electronically-generated
voice, in English (or Japanese).
➀
Remove the bottom and shield covers.
➁
Remove the protective paper attached to the bottom
of the UT-102 to expose the adhesive strip.
➂
Plug UT-102 into J701 on the MAIN UNIT as shown
at left.
➃
Return the top and shield covers to their original po-
sitions.
13-2 UT-102
VOICE SYNTHESIZER UNIT
Summary of Contents for IC-746
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