Kenwood TS-B2000 Antennas, Automatic Antenna Tuner, Antenna Selection Frequency Range MHz

OPERATOR CONVENIENCES

ALT (Auto Lock Tuning)

The ALT (Auto Lock Tuning) allows the transceiver to adjust the center receiving frequency automatically when you operate on the 1.2 GHz band in FM mode. When the receiving audio signal is distorted or breaking up, turn this function on to adjust the center receiving frequency. Some old 1.2 GHz transceivers do not have stable and precise oscillating circuits and tend to be slightly off (drifted from) the displayed frequency.

Press [FUNC], [XIT/ ALT] to toggle the ALT function ON or OFF.

•“ALT” appears when the function is ON.

Note: The ALT (Auto Lock Tuning) works only on the 1.2 GHz band in FM mode.

ANTENNAS

HF/ 50 MHz Band

Two antenna connectors are available for the HF/

50 MHz band on the rear panel {page 13}. When you operate the main transceiver on these frequencies, you can select one of 2 antennas.

Press [FUNC], [AT/ ANT1/2] to select ANT 1 or ANT 2 for the main transceiver.

•“ANT 1” or “ANT 2” appears to indicate which antenna is selected.

The ANT 1/ANT 2 setting will automatically be stored in the antenna band memory. Next time you select the same band, the same antenna will be automatically selected.

Antenna Selection Frequency Range (MHz)

0.03 ~ 2.5		2.5	~ 4.1
4.1	~ 7.5	7.5 ~ 10.5
10.5	~ 14.5	14.5	~ 18.5
18.5	~ 21.5	21.5	~ 25.5
25.5	~ 30.0	30.0	~ 60.0

Note: Connect an external antenna tuner to the ANT 1 connector only, then select ANT 1. The internal tuner will be automatically bypassed when the transceiver is switched ON.

VHF/ UHF/ 1.2 GHz Band

When you select the VHF, UHF, or 1.2 GHz (TS-2000/ TS-B2000 optional) band on the main transceiver and/or the sub-receiver, the following antenna is automatically selected based on the operating frequencies.

	MAIN transceiver				SUB-receiver
		(MHz)			(MHz)
ANT 144	142	~ 152	(K-type)	118	~ 174 (K-type)
				220	~ 300	(K-type)
	144	~ 146	(All E-types)	144	~ 146	(All E-types)
ANT 430	420	~ 450	(K-type)	300	~ 512	(K-type)
	430	~ 440	(All E-types)	430	~ 440	(All E-types)
ANT 1.2G	1240 ~ 1300 (All types)				N/A

Note: The same antenna is shared and used when the main transceiver and sub-receiver are on the same band. The frequency coverage varies depending on the market codes.

APO (Auto Power OFF)

You can set the TS-2000(X) to switch OFF automatically if no keys or controls are pressed or adjusted for a certain period of time. 1 minute before the transceiver switches OFF, “CHECK” is output in Morse code. You can select the time from OFF, 60, 120, and 180 minutes.

Press [MENU], then turn the MULTI/ CH control to access Menu No. 57.

Select the APO time from OFF, 60, 120, or 180 minutes.

Note:

◆The APO function works even if the transceiver is scanning.

◆The APO timer starts counting down the timer when no key presses, no control adjustments, and no command (RS-232C port) sequences are detected.

AUTOMATIC ANTENNA TUNER

As explained in “ANTENNA CONNECTION” {page 1}, matching the impedance of the coaxial cable and antenna is important. To adjust the impedance between the antenna and the transceiver, you have the choice of using the internal tuner or an external tuner. This section describes how to use the internal tuner. For the external tuner, consult the instruction manual that comes with the tuner.

1Select the transmit frequency.

2Press [FUNC], [AT/ ANT1/2] to select ANT 1 or ANT 2.

•If an external tuner is connected to the ANT 1 connector, select ANT 2 to use the internal antenna tuner. The internal antenna tuner is automatically bypassed if an external antenna tuner is connected to ANT 1.

3Press [AT/ ANT1/2] momentarily.

•“AT” appears, indicating that the internal tuner is in-line (not bypassed).

10	25	50	100W
R			%
PW
C
AL
		FILTER

4Press [AT/ ANT1/2] for more than one second.

•CW mode is selected and tuning begins.

•“” blinks and the MAIN band LED lights red.

•To cancel tuning, press [AT/ ANT1/2] again.

•If the SWR of the antenna system is extremely high (more than 10:1), an alarm (“SWR” in Morse code) sounds and the internal tuner is bypassed. Before attempting to tune again, adjust the antenna system to lower the SWR.

5See the display and check that tuning has

successfully finished.

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