Kenwood TK-780 Service Manual
Also see for TK-780 series: Programming instructionsInstruction manualService manual supplementService manualInstruction manual
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ADJUSTMENTMeasurementTest-equipment Unit TerminalAdjustmentUnit Parts Method Specifications/RemarksConditionItem50TK-7805. Squelch 1) Set test mode SSG Rear ANT Squelch must be(Tight) Select "nL SQLT" in tuning mode. panel closed once.SSG freq' : 146.050MHz AF VTVM ACC Then adjust forSSG output : –109dBm Distortion (EXT.SP) squelch open point.SSG MOD : 1.5kHz (Narrow) meter2) "nC SQLT" OscilloscopeSSG freq' : 160.050MHz AG3) "nH SQLT"SSG freq' : 173.950MHz4) "sL SQLT", "sC SQLT", "sH SQLT"SSG freq' : Same asnarrow adjustment.SSG output : –109dBmSSG MOD : 2.4kHz (Semi-wide)5) "wL SQLT", "wC SQLT", "wH SQLT"SSG freq' : Same asnarrow adjustment.SSG output : –109dBmSSG MOD : 3.0kHz (Wide)6. RSSI (High) 1) Set test mode Writing values only.Select "nL HRSI" in tuning mode.SSG freq' : 146.050MHzSSG output : –70dBmSSG MOD : 1.5kHz (Narrow)2) "nC HRSI"SSG freq' : 160.050MHz3) "nH HRSI"SSG freq' : 173.950MHz4) "sL HRSI", "sC HRSI", "sH HRSI"SSG freq' : –70dBmSSG output : Sensitivityvalue of 12dB SINAD.SSG MOD : 2.4kHz (Semi-wide)5) "wL HRSI", "wC HRSI", "wH HRSI"SSG freq' : –70dBmSSG output : Sensitivityvalue of 12dB SINAD.SSG MOD : 3.0kHz (Wide)7. Squelch 1) Set test mode Check Squelch must be opened.check CH : CH1 - Sig1 (Wide/Semi-wide/Narrow)SSG freq' : 160.050MHzSSG output : 15dB SINAD level2) SSG output : OFF Squelch must be closed.(Wide/Semi-wide/Narrow)8. QT check 1) Set test mode Check Squelch must be opened.CH : CH1 - Sig5 (Wide/Semi-wide/Narrow)SSG freq' : 160.050MHzSSG MODINT : 1kHzEXT : 151.4HzSSG system MOD DEV: ±3.75kHzSSG output : 12dB SINAD level2) CH : CH1 - Sig4 Squelch must be closed.CH1 - Sig6CH1 - Sig7 |
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