Page 121
FT-950 O
PERATING
M
ANUAL
I
NSTALLATION
OF
O
PTIONAL
A
CCESSORIES
RF
μ
T
UNING
K
IT
The RF
μ
Tuning Kits provide ultra-sharp RF selectivity for the front end of the transceiver. Very high Q is made possible
by the narrow-band design. Three RF
μ
Tuning Kits are available. The
MTU-160
covers the 1.8 MHz band. The
MTU-80/
40
covers the 3.5 and 7 MHz bands. The
MTU-30/20
covers 10.1 and 14 MHz bands.
The narrow bandwidth is especially useful on the low bands, when many strong signals are being received via NVIS
propagation (Near Vertical-Incidence Signals) within a narrow bandwidth. The added protection for the receiver RF stages
is especially helpful in preventing IMD and blocking.
Installation
Assemble the RF
μ
Tuning Unit according to the “RF
μ
Tun-
ing Kit Installation Manual” supplied with the RF
μ
Tun-
ing Kit.
Interconnections to FT-950
Connect each cable (supplied with the RF
μ
Tuning Kit)
between the RF
μ
Tuning Unit and the
FT-950
Transceiver.
Operation
Please see page 42 of this Operating Manual.
TO
1
ANT
DC IN
2
FROM
GND
ROT
LINEAR TUNER
PTT
REC
REM
KEY
DMU
CAT
EXT
SPKR
INPUT: DC 13.8 V
22 A
-TUNE
-TUNE
R
F
O
U
T
R
F
IN
C
N
T
L
IN
R
F
I
N
R
F
O
U
T
R
F
IN
R
F
O
U
T
C
N
T
L
I
N
C
N
T
L
O
U
T
C
N
T
L
I
N
C
N
T
L
O
U
T
RF
(
)
Cable Supplied with RF µTUNING KIT
RF Cable (Supplied with RF µTUNING KIT)
CNTL Cable (
)
Supplied with RF µTUNING KIT
A
N
T
µ
-T
U
N
E
F
R
O
M
G
N
D
µ
-T
U
N
E
µ
-T
U
N
E
T
O
DC IN
TO
1
ANT
DC IN
2
FROM
GND
ROT
LINEAR TUNER
PTT
REC
REM
KEY
DMU
CAT
EXT
SPKR
INPUT: DC 13.8 V
22 A
-TUNE
-TUNE
R
F
O
U
T
R
F
IN
C
N
T
L
IN
A
N
T
µ
-T
U
N
E
F
R
O
M
G
N
D
µ
-T
U
N
E
µ
-T
U
N
E
T
O
RF
(
)
Cable Supplied with RF µTUNING KIT
RF Cable (Supplied with RF µTUNING KIT)
CNTL Cable (
)
Supplied with RF µTUNING KIT
DC IN
S
INGLE
C
ONNECTION
M
ULTI
C
ONNECTION
A
DVICE
The RF connecting cables are
color coded (black and gray) to
assist in properly connecting the
RF IN
and
RF OUT
jacks. (See
illustration)
Miss-connection will not dam-
age the RF µTuning Kit. How-
ever, improper operation may
occur.
Connect the color-coded control
cable(s) between the
CNTL
OUT
and
CNTL IN
jacks (see il-
lustration). Confirm all connec-
tions before turning on the trans-
ceiver.
If the
FT-950
does not operate
and the frequency display blinks
sometimes, confirm and correct
the “
CNTL IN
” and “
CNTL OUT
”
connections on the RF µTuning
Unit.
The order of connecting multiple
RF µTuning Units is not impor-
tant.
Remove the rubber cap first,
and then connect the plug.
Remove the rubber cap first,
and then connect the plug.