Page 129
FT
DX
1200 O
PERATING
M
ANUAL
I
NSTALLATION
OF
O
PTIONAL
A
CCESSORIES
RF
ȝ
T
UNING
K
IT
The
5
F
Tuning
.
its provide ultra-sharp
5
F selectivity for the front end of the transceiver.
$
Very high Q tuned circuit
makes possible the narrow-band design. Three
5
F
Tuning
.
its are available. The
MTU-160
covers the 1.8
0
H
]
band.
The
MTU-80/40
covers the 3.
and 7
0
H
]
bands. The
MTU-30/20
covers 10.1 and 14
0
H
]
bands.
The narrow bandwidth is especially useful on the low bands, when many strong signals are being received via
1
VIS
propagation
1
ear Vertical-Incidence Signals) within a narrow bandwidth. The added protection for the receiver
5
F
stages is especially helpful in preventing I
0'
and blocking.
DC IN
DC IN
ANT
ANT
GND
GND
μ
-TUNE T
O
μ
-TUNE T
O
μ
-TUNE
FROM
μ
-TUNE
FROM
RF Cable
(Supplied with RF
μ
TUNING KIT)
RF Cable*
RF Cable*
RF Cable*
RF Cable*
RF Cable (Supplied with RF
μ
TUNING KIT)
CNTL Cable
(Supplied with RF
μ
TUNING KIT)
*: Supplied with RF
μ
TUNING KIT
CNTL Cable*
CNTL Cable*
CNTL Cable*
μ
-TUNE
μ
-TUNE
RF IN
RF IN
RF IN
RF IN
RF OUT
RF OUT
RF OUT
RF OUT
M
ULTI
C
ONNECTION
S
INGLE
C
ONNECTION
Installation
$
ssemble the
5
F
Tuning Unit according to the “
5
F
Tuning
.
it Installation
0
anual” supplied with the
5
F
Tuning
.
it.
Interconnections to FT
DX
1200
Connect each cable
supplied with the
5
F
Tuning
.
it) between the
5
F
Tuning Unit and the
FT
DX
1200
Transceiver.
Advice
The
5
F connecting cables are color
coded
black and gray) to assist in
properly connecting the
5
F I
1
and
5
F
2
UT jacks.
See illustration)
$
n improper connection will
not damage the
5
F
Tuning
.
it.
However, improper operation may
occur.
Connect the color-coded control
c a b l e
s ) b e t w e e n t h e C
1
T L
2
U T a n d C
1
T L I
1
j a c k s
see illustration). Confirm all
connections before turning on the
transceiver.
If the
FT
DX
1200
does not operate
and the fre
T
uency display blinks
sometimes, confirm and correct
the “C
1
TL I
1
” and “C
1
TL
2
UT”
connections on the
5
F
Tuning
Unit.
The order of connecting multiple
5
F
Tuning Units is not important.