Specifications
Page 121FT-950 OPERATING MANUAL
INSTALLATION OF OPTIONAL ACCESSORIES
RF μTUNING KIT
The RF μTuning 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 μTuning 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 μTuning Unit according to the “RF μTun-
ing Kit Installation Manual” supplied with the RF μTun-
ing Kit.
Interconnections to FT-950
Connect each cable (supplied with the RF μTuning Kit)
between the RF μTuning 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
I
N
C
N
T
L
I
N
R
F
I
N
R
F
O
U
T
R
F
I
N
R
F
O
U
T
C
N
T
L
IN
C
N
T
L
O
U
T
C
N
T
L
IN
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
I
N
C
N
T
L
I
N
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
SINGLE CONNECTION
MULTI CONNECTION
ADVICE
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.