Alinco DR-620, Service Manual

Page: 46 / 56

4) UHF Adjustment Specification
ITE M
CH
No
C O N D IT IO N U N IT
ADJ.
S P O T
A D J U S T IN G M E T H O D
P D ADJ. CH1
4 4 0 .0 0 M H z
R X
M A IN L57
Adjust so that P D U vo ltag e b ecom es
3 .4 V
HI P O W E R C H 3
4 4 0 .0 0 M H z
HI P O W E R
F R O N T R E 601
Adjust to 3 5 .0 ± 1 .0 W
M ID P O W E R C H 4
4 4 0 .0 0 M H z
M ID P O W E R
F R O N T R E 601
Adjust to 1 0 . 0 ± 1 .0 W
L O W
P O W E R
C H 5
4 4 0 .0 0 M H z
L O W
P O W E R
F R O N T R E 601
Adjust to 5 .0 ± 0 .5 W
R X Distortion C H 6
4 4 0 .0 5 M H z
S S G 60dB u
M A IN L 102
It is adjusted to b eco m e m axim um
vo lum e w hen a position of V o lu m e is
done at 11 o'clock.
Confirm : Less than 3%
Rx Signal
Sensitivity
C H 7 4 0 0 .0 5 M H z F R O N T
F U N C
R E 601
F U N C
Adjust so that th e Rx sensitivity
b eco m es in m axim um .
Confirm :
At - 4 d B u S IN A D m ore than 12dB
Rx Signal
Sensitivity
C H 8 4 4 0 .0 5 M H z F R O N T
F U N C
R E 601
F U N C
Adjust so that th e Rx sensitivity
beco m es in m axim um .
Confirm :
At - 8 d B u S IN A D m ore than 12dB
Rx Signal
Sensitivity
C H 9 4 7 9 .9 5 M H z F R O N T
F U N C
R E 601
F U N C
Adjust so that th e Rx sensitivity
beco m es in m axim um .
Confirm :
At - 6 d B u S IN A D m ore than 12dB
S -m e te r(1 ) C H 1 0
4 4 0 .0 5 M H z
S S G 0dBu
F R O N T F U N C It is confirm ed by th e F U N C key.
S -m te r(F U L L ) C H 11
4 4 0 .0 5 M H z
S S G 20dB u
F R O N T F U N C It is confirm ed by th e F U N C key.
Squelch C H 1 2
4 4 0 .0 5 M H z
S S G O F F
Indication 01
M A IN V R 9
Adjust so that th e squelch stops at
perfectly close location
M axim um
Deviation
C H 1 6
4 4 0 .0 0 M H z
M O D 1K H z
4 0 m V e m f
M A IN V R 4
4 .5 ± 0 .1 K H z /D E V
M axim um
Deviation
C H 1 7
4 4 0 .0 0 M H z
M O D 1K H z
4 0 m V e m f
(narrow )
2 .2 ± 0 .3 K H z /D E V
Mic G ain C H 1 8
4 4 0 .0 0 M H z
M O D 1K H z
4 m V e m f
3 .0 ± 0 .5 K H z /D E V
C T C S S
M odulation
Level
C H 1 9
4 4 0 .0 0 M H z
8 8 .5 H z
8 0 0 ± 4 0 0 H z /D E V 3 K H z L P F O N
D C S
Modulation
Level
C H 2 0
4 4 0 .0 0 M H z
2 5 5 C o d e
8 0 0 ± 4 0 0 H z /D E V 3 K H z L P F O N
1 7 5 0 H z
M odulation
Level
C H 21
4 4 0 .0 0 M H z
1 7 5 0 H z
3 .0 ± 0 .5 K H z /D E V
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