TKR-750 service manual

TKR-750
ADJUSTMENT
Item
Condition
Measurement
Testequipment
Unit Terminal
Adjustment
Unit Parts Method
(Narrow) 2) A-low CH (TX VCO A low) MOD ANA Rear TX OUT PC adj. ± 0.1kHz
A-center CH (VCO A center) or 2.05kHz
A-high CH (TX VCO A high) Deviation
B-low CH (TX VCO B low) meter
B-center CH (VCO B center) Oscilloscope
B-high CH (TX VCO B high)
Transmission AG Front MIC
AF VTVM
Specifications/Remarks
23. DQT 1) Low CH (VCO-A center) MOD ANA Rear TX OUT PC adj. Oscilloscope DC range
balance High CH (VCO-B center) or Make the de- flat “A” part
(Wide) Deviation meter filter Deviation modulated waves
HPF : OFF meter into square waves.
A
LPF : 3kHz
Oscilloscope
De-emphasis : OFF
Transmission
A
(Narrow)
2) Low CH (VCO-A center)
High CH (VCO-B center)
Transmission
24. QT 1) VCO-A CH (TX VCO A center) MOD ANA Rear TX ANT PC adj. ± 0.05kHz
deviation VCO-B CH (TX VCO B center) or 0.75kHz
(Wide) Deviation meter filter Deviation
HPF : OFF
meter
LPF : 3kHz
Oscilloscope
De-emphasis : OFF
Detector : p-p/2 AG Front MIC
Transmission
AF VTVM
(Narrow) 2) VCO-A CH (TX VCO A center) PC adj. ± 0.05kHz
VCO-B CH (TX VCO B center)
0.35kHz
Transmission
25. DQT 1) VCO-A CH (TX VCO A center) PC adj. ± 0.05kHz
deviation VCO-B CH (TX VCO B center) 0.75kHz
(Wide) Deviation meter filter
HPF : OFF
LPF : 3kHz
De-emphasis : OFF
Detector : Peak hold
Transmission
(Narrow) 2) VCO-A CH (TX VCO A center) PC adj. ± 0.05kHz
VCO-B CH (TX VCO B center)
0.35kHz
Transmission
26. CW ID 1) VCO-A CH (TX VCO A center) PC adj. ± 0.1kHz
deviation VCO-B CH (TX VCO B center) 2kHz
(Wide) Deviation meter filter
HPF : OFF
LPF : 15kHz
De-emphasis : OFF
Transmission
(Narrow) 2) VCO-A CH (TX VCO A center) PC adj. ± 0.05kHz
VCO-B CH (TX VCO B center)
1kHz
Transmission
44