TM-800 UHF SERVICE MANUAL
148
Note: The radio must be covered with aluminum chassis when adjusting sensitivity; Connect an RF
power meter to the antenna connector while TX; Connect a SINAD meter with a 16ohm load to the
external [SP] jack.
Radio Communication
Test Set
SSG output:
-120dBm (level 3)
18. SQ Open
Enter adjustment item
“11”, turn to
CH (H), CH(C), CH (L)
SSG output
-112dBm (level 9)
Adjust software
settings at SQL3
and SQL9
，
press
[PF6] to save.
Press [PF2] to
adjust software
settings , open
the squelch
while the value
is changeless
Radio Communication
Test Set
SSG output:
-122dBm (level 3)
19.SQ Close
Enter adjustment item
“12”, turn to
CH (H), CH(C), CH (L)
SSG output:
-114dBm (level 9)
ANT
SP Jack
Adjust
software
setting
Adjust software
settings at SQL3
and SQL9
，
press
[PF6] to save.
Press [PF2] to
adjust software
settings, close
the squelch
while the value
is changeless
20. Distortion
DIS
≤
3%
21. S/N
1.CH: RX Center
Radio Communication
Test Set
SSG output:
-60dBm
ANT
SP Jack
FILTER:
0.3-3.0KHz
Check
S/N
≥
48 (W)
S/N
≥
42 (N)
