Kenwood TK-270G, TK-260G service manual Common Section, Transmitter Section

TK-260G/270G

ADJUSTMENT

Since 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.

Common Section

	Item		Condition	Measurement		Adjustment		Specifications/
				Test equipment	Terminal	Parts	Method	Remark
1. Setting		1)	BATT terminal voltage:7.5V
		2)	SSG Standard modulation
			[Wide] MOD:1kHz, DEV:3kHz
			[Narrow] MOD:1kHz, DEV:1.5kHz
2. VCO lock		[Panel Test Mode]
	voltage	1)	CH-Sig:2-1	Power meter	ANT		Check	0.8V or more
	RX	2)	CH-Sig:3-1	DVM	CV(LV)			4.0V ± 0.1V
	TX	3)	CH-Sig:2-1					0.8V or more
			PTT:ON
		4)	CH-Sig:3-1					3.5V ± 0.1V
			PTT:ON

Transmitter Section

	Item		Condition		Measurement			Adjustment		Specifications/
					Test equipment	Terminal		Parts	Method	Remark
	1. Frequency	1)	PTT:ON		Freq. Counter	ANT	VR1		Center frequency
	Adjust				Power meter				(162.0 MHz) ± 50Hz
					Am meter
	2. Max Power	1)	Adj item [HPOW]						Check	5.2W or more
	Check		Adjust [256]
		2)	Adj item
			[H.P O W] ➞ [H.P.O	W] ➞ [H.P.O.W] ➞ [H.P.O.W] ➞ [H.P.O.W. .]
			Adjust [256]
			PTT:ON
										±0.1W
	3. Hight Power	1)	Adj item [HPOW]				Encoder		5.0W
	Adjust		Adjust [∗∗∗]				knob			2.2A or less
		2)	Adj item
			[H.P O W] ➞ [H.P.O	W] ➞	[H.P.O.W] ➞ [H.P.O.W] ➞ [H.P.O.W. .]
			Adjust [∗∗∗]
			PTT:ON
	4. Hight Power	[Panel Test Mode]
	Check	1)	CH-Sig:1-1						Check	4.0~6.0W
			PTT:ON							2.3A or less
		2)	CH-Sig:2-1
			PTT:ON
		3)	CH-Sig:3-1
			PTT:ON
	5. Low Power	1)	Adj item [LPOW]				Encoder		1.0W	±0.1W
	Adjust		Adjust [∗∗∗]				knob			1.0A or less
		2)	Adj item
			[L.P O W] ➞ [L.P.O W] ➞		[L.P.O.W] ➞ [L.P.O.W.] ➞ [L.P.O.W. .]
			Adjust [∗∗∗]
			PTT:ON
	6. Low Power	[Panel Test Mode]
	Check	1)	CH-Sig:1-1						Check	0.5~1.5W
			Set low power (Push [2])							1.2A or less
			PTT:ON
		2)	CH-Sig:2-1
			PTT:ON
36		3)	CH-Sig:3-1
			PTT:ON