Installation Of - Yaesu FT-450 Operation Manual

I
NSTALLATION OF
A
UTOMATIC
The ATU-450 Automatic Antenna Tuner responds to control commands from the FT-450 Transceiver, providing
microprocessor-based impedance matching on the 160 through 6 meter amateur bands. The impedance matching
range is from 16.5 ohms to 150 ohms (up to 3:1 SWR). Accordingly, the ATU-450 should not be expected to
match "Long wire" type antennas unless you have taken specific design steps to ensure that the impedance
presented to the FT-450 is within this specification.
Important Note
Ì Please be careful to avoid any short-circuit to any metal object.
Ì Please install with great care to prevent injuries from sharp corners of metal objects.
Ì Please practice standard grounding techniques and do not touch semiconductor components unnecessarily
to avoid breakage or damage by static electricity etc.
Cable Information
Connect the interconnecting Control Cable from the FT-450.
Connect the TMP plug (marked green) from the ATU-450 to J5402 on the MAIN Unit.
Connect the other TMP plug (marked gray) from the ATU-450 to J5404 on the MAIN Unit.
Installation
1. Turn off the FT-450's POWER switch by pressing
and holding the [ POWER ( ON/OFF )] switch for one
second, and then turn off the External DC Power
Supply's POWER switch.
2. Disconnect the power cable from the ~DC IN Jack
on the rear panel, and then disconnect all cables
from the FT-450.
3. Remove the two screws from each side and four
screws from the top case of the transceiver. Slide
the top case upward about 1 inch, then discon-
nect the speaker plug from the MAIN Unit and
remove the top case.
N :
Because the speaker cable is connected to the
top case, please be careful not to break the
speaker cable.
4. Remove the two screws from each side and four
screws from the bottom case of the transceiver
and then remove the bottom case.
FT-450 O
A T
NTENNA
M
O
PTIONAL
ATU-450 O
UNER
5. The ATU-450 mounting location is on the right side
of the bottom chassis. Insert the two coaxial cables
from the ATU-450 into this hole.
6. Connect the 6-pin plug from the ATU-450 to the
6-pin Jack.
7. Install the ATU-450 to the chassis while pulling
the two coaxial cables thru the chassis.
8. Mount the ATU-450 with the supplied four screws.
N :
At the front side of the ATU-450, carefully lift the
rubber packing, which is around the transceiver
front panel, and install the two front screws. Do
not damage the packing or the top case may not
close.
Rubber Packing
A
CCESSORIES
PERATION
Through Hole
6-pin Connector
Page 87
ATU-450