Test Mode TK-270G only, Test mode operating features

TK-260G/270G

ADJUSTMENT

Repair Jig (Extention Flat cable : part No.

E37-0851-05)

This cable is used for connecting the TK-270G display unit and TX/RX unit when you test or repair the transceiver.

Display unit

Extention Flat cable

TX/RX unit

Caution : You must connect TK-270G display unit when you test or repair the transceiver.

Test Mode (TK-270G only)

■Test mode operating features

This transceiver has a test mode. To enter test mode, press the [2] key and turn the power on. Hold the [2] key until the test channel No. and test signalling No. appear on LCD. Test mode can be inhibited by programming. To exit test mode, switch the power on again. The following functions are available in test mode.

• Controls

[PTT]	Used when making a transmission.

[MON]	Monitor ON and OFF.
[LAMP]	Changes wide and narrow.
[°]	Sets to the Tuning mode.
[•]	Unused
[2]	RF power HIGH and LOW.
[3]	Changes signalling.
[O] to [9],	Used as the DTMF keypad. If a key is pressed
and [#],[∗]	during transmission, the DTMF corresponding
and [A] to [D]	to the key that was pressed is sent.

[ENCODER]	Changes channel.

• LCD indicator

■Frequency and signalling

The set has been adjusted for the frequencies shown in the

following table. When required. re-adjust them following the adjustment procedure to obtain the frequencies you want in actual operation.

Frequency (MHz)

	Channel No.		K, M
		RX Frequency		TX Frequency

	1	162. 05000		162. 00000
	2	150. 05000		150. 00000
	3	173. 95000		174. 00000
	4	162. 00000		162. 00000
	5	162. 20000		162. 20000
	6	162. 40000		162. 40000
	7~16

Signalling

	Signalling No.	RX			TX
	1	None		None
	2	None		100Hz square wave
	3	QT 67.0Hz		QT 67.0Hz
	4	QT 151.4Hz		QT 151.4Hz
	5	QT 210.7Hz		QT 210.7Hz
	6	QT 250.3Hz		QT 250.3Hz
	7	DQT D023N		DQT D023N
	8	DQT D754I		DQT D754I
	9	DTMF DEC, (159D)		DTMF ENC, (159D)
	10	None		DTMF tone 9
	11	2 tone 321.7/928.1Hz		None
	12	Single tone 1200Hz		Single tone 1200Hz

• Preparations for tuning the transceiver

Before attempting to tune the transceiver, connect the unit to a suitable power supply.

Whenever the transmitter is tuned, the unit must be connected to a suitable dummy load (i.e. power meter).

The speaker output connector must be terminated with a 8Ω dummy load and connected to an AC voltmeter and an audio distortion meter or a SINAD measurement meter at all times during tuning.

• Transceiver tuning

(To place the transceiver in tuning mode)

Channel appears on the LCD. Set the channel according to the tuning requirements.

“LO”	Lights at RF Power Low.
“ ”	Lights at moniter ON.
• LED indicator
Red LED		Lights during transmission. Blinks during low
		battery voltage warning.
Green LED		Lights when there is a carrier.