
TKR-850
41
Item
Condition
Measurement
Adjustment
Specifications/Remarks
Test-
equipment
Unit
Terminal
Parts
Unit
Method
ADJUSTMENT
14. MCF
1) Connect the TG to CN2, then
Tracking
Rear
RX ANT
TX-RX
L14
Adjust it to look like
(Wide)
connect CN4 to the spectrum generator
(A/2)
L17
the wave Fig. 2.
analyzer input.
L18
(Page 39)
CH : 2 (Wide)
Spectrum
TX-RX
CN2
Spectrum analyzer setting
analyzer
(A/2)
CN4
Span : 50kHz to 25kHz
Scale : 10dB to 2dB div
Center freq‘ : 44.850MHz
Tracking generator setting
Output : –30dBm
(Narrow)
2) CH : 2 (Narrow)
L15
Adjust it to look like
L16
the wave Fig. 3.
L19
(Page 39)
15. Discrimi-
1) Connect the SSG to RX ANT.
SSG
Rear
RX ANT
L24
Adjust the distortion
nator
CH : 2 (Wide)
to minimum.
SSG output : –53dBm/501
µ
V
AF VM
TEST/SPKR
SSG MOD : 1kHz
Distortion
jack SPO
SSG DEV : 3kHz
meter
(pin 12)
AF : 2V/4
Ω
16. Threshold
1) Connect SSG to RX ANT.
SSG
Rear
RX ANT
PC adj.
squelch
CH : 2 (Wide)
Adjust to point of
(Wide)
SSG output : 4dB below to
Audio
TEST/SPKR
closing squelch
12dB SINAD level
analyzer
jack SPO
SSG MOD : 1kHz
VTVM
(pin 12)
SSG DEV : 3kHz
Oscilloscope
AF : 2V/4
Ω
2) SSG : OFF
Check
Squelch must be closed.
(Narrow)
3) CH : 2 (Narrow)
PC adj.
SSG output : 4dB below to
Adjust to point of
12dB SINAD level
closing squelch
SSG MOD : 1kHz
SSG DEV : 1.5kHz
AF : 2V/4
Ω
4) SSG : OFF
Check
Squelch must be closed.
17. Tight
1) Connect SSG to RX ANT.
PC adj.
squelch
CH : 2 (Wide)
Adjust to point of
(Wide)
SSG output : 7dB over to
opening squelch
12dB SINAD level
SSG MOD : 1kHz
SSG DEV : 3kHz
AF : 2V/4
Ω
(Narrow)
2) CH : 2 (Narrow)
PC adj.
SSG output : 7dB over to
Adjust to point of
12dB SINAD level
opening squelch
SSG MOD : 1kHz
SSG DEV : 1.5kHz
AF : 2V/4
Ω