Alinco DR-610E, Service Manual

Page: 65 / 89

3 ) U H F R X A d j u s t m e n t
Item
Condition Measurement Adjustment
Specifications
TX/RX Equipment
Unit Terminal Unit Parts Method
R eference
Frequency
f=445.00M H z (T)
f=435.00M H z (E)
TX
F req. C ounter
P ow er M eter
Back U H F A N T
V H F
M ain
TC1
445MHz (T)
435MHz (E)
+ / -
100Hz
P LL VCO
f=440.00M H z RX
Digital
M ultim eter
UHF
Main
TP2
UHF
VC O
L805
4.2V 4.2V +/-0.2V
f=440.00M H z TX —
4.5V
(Check)
4 .0 V -5 .5 V
f=145.00M H z (SUB) RX
3.8V
(Check)
3 .2 V -4 .8 V
1—1 o r l p ^ l r* r \\ 1
i iC i io c ii o ^ /ii
f=4 45 .0 0M H z (T)
f=435.00M H z (E)
n \ /
n A
T.G .
-40dB m
Back U H F AN T
UHF
Main
L322
L323
TC301
TC 302
Max Gain
44 UM (T) 450M (T)
430M (E)440M (E)
J -42dBm ^
S pectrum
A na lyze r
UHF TP3
UH F
S en sitivity
f=438.00M H z (T)
f=4 45 .0 2M H z (T)
f=449.99M H z (T)
SS G OUT: -9.0dB|x
RX
SSG
Dist. M eter
O scilloscop e
Back U H F S P 2 Check
S IN A D is
a b o v e 1 2 d B
f=430.00M H z (E)
f= 4 35 .0 0M H z (E)
f=439.99M H z (E)
SS G O UT: -9.0dB|x
V H F
S ensitivity
f=1 38 .0 0M H z (T)
S S G OUT: -4 .0 d B ji
RX
Check
S IN A D is
above i2 d B
f=145.00M H z
SS G O UT: -6.0dB|x
f=1 73 .9 9M H z (T)
SS G O UT: -4 .0 d B |i
S M eter
f=4 45 .0 0M H z (T)
f=4 35 .0 0M H z (E)
SS G O UT: 18.0dB|x
RX
LCD UHF
S M eter
Front
panel
UH F
Main
V R 304
"Full"
Flashing
S S G O FF
Check
Does not light.
S Q L level
f=4 45 .0 0M H z (T)
f=435.00M H z (E)
SS G O FF
SQ VR: 9 o'clock
RX Main
UH F
Main
V R 303
Turn
V R 303 to
close the
squelch
Turn the UHF SQ VR to make sure that the squelch
closes at 9-10 o'clock.
A T T
f=4 45 .0 0M H z (T)
f=435.00M h'z (E)
RX
While pushing FUNC key, push H/L key. The ATT is
lit. Make sure that the receiving sensitivity is attenu­
ated about 10 - 20dB.
52
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