Kenwood TK-260G Service Manual

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Contents

TK-260G/270G36Common SectionItem Condition Measurement Adjustment Specifications/Test equipment Terminal Parts Method Remark1. Setting 1) BATT terminal voltage:7.5V2) SSG Standard modulation[Wide] MOD:1kHz, DEV:3kHz[Narrow] MOD:1kHz, DEV:1.5kHz2. VCO lock [Panel Test Mode]voltage 1) CH-Sig:2-1 Power meter ANT Check 0.8V or moreRX 2) CH-Sig:3-1 DVM CV(LV) 4.0V ± 0.1VTX 3) CH-Sig:2-1 0.8V or morePTT:ON4) CH-Sig:3-1 3.5V ± 0.1VPTT:ONTransmitter SectionItem Condition Measurement Adjustment Specifications/Test equipment Terminal Parts Method RemarkADJUSTMENT1. Frequency 1) PTT:ON Freq. Counter ANT VR1 Center frequencyAdjust Power meter (162.0 MHz) ± 50HzAm meter2. Max Power 1) Adj item [HPOW] Check 5.2W or moreCheck Adjust [256]2) Adj item[H . P O W] Þ [H. P. O W] Þ [H. P .O . W] Þ [H. P .O . W] Þ [H. P. O . W . . ]Adjust [256]PTT:ON3. Hight Power 1) Adj item [HPOW] Encoder 5.0W ±0.1WAdjust Adjust [∗∗∗] knob 2.2A or less2) Adj item[H . P O W] Þ [H. P. O W] Þ [H. P .O . W] Þ [H. P .O . W] Þ [H. P. O . W . . ]Adjust [∗∗∗]PTT:ON4. Hight Power [Panel Test Mode]Check 1) CH-Sig:1-1 Check 4.0~6.0WPTT:ON 2.3A or less2) CH-Sig:2-1PTT:ON3) CH-Sig:3-1PTT:ON5. Low Power 1) Adj item [LPOW] Encoder 1.0W ±0.1WAdjust Adjust [∗∗∗] knob 1.0A or less2) Adj item[L. P O W] Þ [L. P. O W] Þ [L .P . O . W] Þ [L. P .O . W . ] Þ [L. P .O . W . . ]Adjust [∗∗∗]PTT:ON6. Low Power [Panel Test Mode]Check 1) CH-Sig:1-1 Check 0.5~1.5WSet low power (Push [2]) 1.2A or lessPTT:ON2) CH-Sig:2-1PTT:ON3) CH-Sig:3-1PTT:ONSince the TK-260G cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment.Adjust the receive BPF waveform according to the appropriate adjustment item.