Kenwood TK-380 Service Manual

Also see for TK-380: User manual Instruction manual Instruction manual Pricing and specification manual Service manual

Contents

TK-38047Adjustment pointsTX-RX unit (X57-5750)component side viewADJUSTMENTItem Condition Measurement Adjustment Specifications/Test equipment Unit Terminal Unit Parts Method Remark1) Adj item [SENS] AdjustmentAdjust [∗∗∗] Low-edge·fTurn a knob2) Low-edge frequency and makeAdj item [L SENS] peak point.Spe-Ana settingCenter·f : 415MHz(K3,K6,M3) AdjustmentSpan : 200MHz Center·fRBW : 1MHz Turn a knobVBW : 300kHz and makeREF level : -15dBm center levelTra-G setting 3dB aboveInput level :-30dBm from Low-edge3) Center frequency level.Adj item [C SENS] Adjustment4) High-edge frequency High-edge·fAdj item [H SENS] Turn a knoband makeHigh-edgelevel 9dB abovefrom Low-edgelevel.2. Sensitivity [Panel Test Mode] SSG Panel ANTCheck 1) CH-Sig:1-1 AF VTVM Universal Check 12dB SINAD orSSG OUT Oscilloscope connector moreWide:-118dBm(MOD:1kHz / ±3kHz)Narrow:-117dBm(MOD:1kHz / ±1.5kHz)3. Squelch 1) Adj item [SQL] Encoder Adjust to pointAdjust Adjust [∗∗∗] knob of openingSSG OUT: squelch.12dB SINAD level :K,K3,K4,K6,M12dB SINAD level -1dB :K2,K5,M32) Adj item [n SQL]Adjust [∗∗∗]12dB SINAD level :K,K3,K4,K6,M12dB SINAD level -1dB :K2,K5,M34. Squelch [Panel Test Mode] Check Squelch mustCheck 1) CH-Sig:1-1 be opened.SSG OUT:12dB SINAD level2) SSG OUT:OFF Squelch mustbe closed.(K3,K6,M3)Band Pass Filter Characteristic (K3,K6,M3)CENTER 415 MHzSPAN 200 MHzSWP 50 msREF –15.0 dBm10 dB /CAL. ONATT 10 dB MKR ∆ 20.0 MHzMARKER20.0 MHz5.1 dBRBW1 MHzNEG PKVBW300 kHz[H SENS][C SENS][L SENS]440400 4209 dBL C Hf →400 415 430 MHz3 dB