Alignment
ALIGNMENT-10
FT-99
1
Technical Supplement
S-meter Adjustment
Set the VFO-A frequency to 14.200 MHz in the
USB mode.
Set the following controls as indicated:
[IPO] : AMP1
[ATT] : OFF
[AGC] : AUTO
[RF GAIN] : Fully clockwise
Connect the RF Signal Generator to the “HF/50
MHz” ANT jack, then set the frequency to
14.200 MHz.
Press and hold in the [A=B], [A/B], and [FAST]
keys, while turning the radio on, to enter the
alignment mode.
R e f e r t o t h e c h a r t b e l o w a n d s e l e c t t h e
appropriate “Alignment menu item” using the
[MULTI] Dial knob. Set the RF Signal Generator
output to each level, and adjust the [CLAR/
VFO-B] knob for the corresponding S-meter
reading. Press the [F(M-LIST)] key to save the
new setting at each level.
Alignment menu item
RF Signal Generator
S-meter
05-01 S-MTR 0
OFF
S-0
05-02 S-MTR 1
+14 dBµ
S-1
05-03 S-MTR 5
+24 dBµ
S-5
05-04 S-MTR 7
+30 dBµ
S-7
05-05 S-MTR 9
+36 dBµ
S-9
05-06 S-MTR +10
+46 dBµ
S-9+10dB
05-07 S-MTR +20
+56 dBµ
S-9+20dB
05-08 S-MTR +30
+66 dBµ
S-9+30dB
05-09 S-MTR +40
+76 dBµ
S-9+40dB
05-10 S-MTR +50
+86 dBµ
S-9+50dB
05-11 S-MTR +60
+96 dBµ
S-9+60dB
Press and hold in the [MENU(SETUP)] button
for one second to save the new settings and exit
the alignment mode.
FIL Gain Adjustment
Press and hold in the [A=B], [A/B], and [FAST]
keys, while turning the radio on, to enter the
alignment mode.
Rotate the [MULTI] Dial knob to select the
alignment menu item “06-01 R. FIL 3k”.
Rotate the [CLAR/VFO-B] knob to set the pa-
rameter is "180".
Rotate the [MULTI] Dial knob to select the
alignment menu item “06-02 R. FIL 15k”.
Rotate the [CLAR/VFO-B] knob to set the pa-
rameter is "180".
Press and hold in the [MENU(SETUP)] button
for one second to save the new settings and exit
the alignment mode.
S-meter Adjustment (FM)
Set the VFO-A frequency to 145.900 MHz in the
FM mode.
Connect the RF Signal Generator to the “144/430
MHz” ANT jack, then set the output level to 0
dBµ at the 145.900 MHz with ±3.5 kHz devia-
tion FM modulation of a 1 kHz audio signal.
Press and hold in the [A=B], [A/B], and [FAST]
keys, while turning the radio on, to enter the
alignment mode.
Rotate the [MULTI] Dial knob to select the
alignment menu item “07-01 FM S1”.
Rotate the [CLAR/VFO-B] knob so that the
S-meter reading is “S-1”.
Press the [F(M-LIST)] button to save the new
setting.
Set the RF Signal Generator to +20 dBµ.
Rotate the [MULTI] Dial knob to select the
alignment menu item “07-02 FM S9”.
Rotate the [CLAR/VFO-B] knob so that the
S-meter reading is “S-9”.
Press the [F(M-LIST)] button to save the new
setting.
Set the RF Signal Generator to +40 dBµ.
Rotate the [MULTI] Dial knob to select the
alignment menu item “07-03 FM S60”.
Rotate the [CLAR/VFO-B] knob so that the
S-meter reading is “S-9+60”.
Press and hold in the [MENU(SETUP)] button
for one second to save the new setting and exit
the alignment mode.
Summary of Contents for FT-991A
Page 10: ...BLOCK DIAGRAM 1 FT 991 Technical Supplement Block Diagram...
Page 11: ...CONNECTION DIAGRAM 1 FT 991 Technical Supplement Connection Diagram...
Page 36: ...FT 991 Technical Supplement MAIN 1 Circuit Diagram MAIN Unit...
Page 37: ...FT 991 Technical Supplement MAIN 2 Parts Layout side A MAIN Unit 1 2 3 4 5 A B C D E F G...
Page 38: ...FT 991 Technical Supplement MAIN 3 Parts Layout side B MAIN Unit 1 2 3 4 5 a b c d e f g...
Page 68: ...FT 991 Technical Supplement PLL 1 PLL Unit Circuit Diagram...
Page 69: ...FT 991 Technical Supplement PLL 2 PLL Unit Parts Layout side A side B 1 2 3 A B C...
Page 73: ...FT 991 Technical Supplement EDSP 1 Circuit Diagram EDSP Unit...
Page 79: ...FT 991 Technical Supplement CNTL 1 CNTL Unit Circuit Diagram...
Page 80: ...FT 991 Technical Supplement CNTL 2 CNTL Unit Parts Layout side A A B C D E F G 1 2 3 4...
Page 81: ...FT 991 Technical Supplement CNTL 3 CNTL Unit Parts Layout side B a b c d e f g 1 2 3 4...
Page 87: ...FT 991 Technical Supplement HF PA 1 HF PA Unit Circuit Diagram...
Page 88: ...FT 991 Technical Supplement HF PA 2 HF PA Unit Parts Layout side A 1 2 3 4 A B D F G E C 5...
Page 89: ...FT 991 Technical Supplement HF PA 3 HF PA Unit Parts Layout side B 1 2 3 4 a b d f g e c 5...
Page 96: ...FT 991 Technical Supplement V_U PA 1 Circuit Diagram V_U PA Unit...
Page 97: ...FT 991 Technical Supplement V_U PA 2 V_U PA Unit Parts Layout side A 1 2 3 A B C D E F G H...
Page 98: ...FT 991 Technical Supplement V_U PA 3 V_U PA Unit Parts Layout side B 1 2 3 a b c f h j d e g i...
Page 105: ...FT 991 Technical Supplement PANEL 1 Circuit Diagram PANEL Unit...
Page 113: ...FT 991 Technical Supplement TUNER 1 TUNER Unit Circuit Diagram...
Page 114: ...FT 991 Technical Supplement TUNER 2 TUNER Unit Parts Layout side A 1 2 3 4 A B C D E F G H...
Page 115: ...FT 991 Technical Supplement TUNER 3 TUNER Unit Parts Layout side B...
Page 119: ...JACK 1 JACK Unit Circuit Diagram FT 991 Technical Supplement...
Page 120: ...JACK 2 JACK Unit Parts Layout side A side B FT 991 Technical Supplement...
Page 122: ...FT 991 Technical Supplement SCP 1 Circuit Diagram SCP Unit...
Page 123: ...FT 991 Technical Supplement SCP 2 Parts Layout SCP Unit side A side B...
Page 127: ...FT 991 Technical Supplement DSP 1 DSP Unit Circuit Diagram...
Page 128: ...FT 991 Technical Supplement DSP 2 DSP Unit Parts Layout side A side B...
