Bedienungsanleitung Kenwood TS-2000E (Seite 111 von 150) (Englisch)

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18 TROUBLESHOOTING

OPERATION NOTICES

The TS-2000(X)/ TS-B2000 has been designed and

engineered to avoid possible hardware glitches.

However, you may notice the following symptoms

when you operate the transceiver. These symptoms

are not malfunctions.

DC POWER SUPPLY

As stated in the SPECIFICATIONS {page 105}, this

transceiver requires a supplied DC voltage source of

13.8 V ±15%. If you find that the transceiver cannot

be switched ON, or that is shut OFF automatically,

the DC voltage may be outside the specified range.

In such a case, remove the DC cable from the

transceiver immediately and confirm that the supplied

voltage is within the specified range.

TX SIGNAL HARMONICS

The TS-2000(X)/ TS-B2000 has 2 independent

receivers. Thus, it can receive signals while you are

transmitting. Because of this, the harmonics or the

mixed heterodyne signal images of your transmission

signal can be monitored through the receiver. Even if

the TX Monitor function {page 79} is OFF, the

transmission signal may be monitored through the

speaker.

INTERNAL BEATS

On some spots of the transceiver bands, the S-meter

moves or you cannot receive any signals. This is

inevitable when you use superheterodyne receivers.

You may notice the signals on the following spots of

the bands.

On the main transceiver:

51.259 MHz, 430.151 MHz, 432.209 MHz,

436.799 MHz, 439.298 MHz, 442.440 MHz

(K-type only), 1247.999 MHz, and 1269.387 MHz.

When the sub-receiver frequency is 144.000 MHz:

146.663 MHz (K-type only) and 436.249 MHz.

When the sub-receiver frequency is 440.000 MHz:

437.333 MHz and 444.315 MHz (K-type only).

Note: When the sub-receiver frequency changes, the above beat

frequencies may be changed accordingly. In this case, turn the

sub-receiver OFF to remove the internal spurious signals.

On the sub-receiver:

144.490 MHz, 144.945 MHz, 430.150 MHz,

436.210 MHz, 436.800 MHz, 442.020 MHz

(K-type only), 449.400 MHz (K-type only) and

429.050 MHz (K-type only).

VISUAL SCAN

When you have the same VHF band or UHF band

for both the main transceiver and the sub-receiver,

the Visual scan may indicate the signals on the

bar-graph display even if no signal is monitored on

the main transceiver. This error occurs due to the

internal spurious harmonics that are generated by

the sub-receiver. Refer to “INTERNAL BEATS”,

above, for the frequencies.

SENSITIVITY (K-type only)

While the main transceiver is receiving on the VHF band

(142 ~ 152 MHz), the sensitivity of the main transceiver

slightly degrades when you select 118 ~ 136 MHz or

155 ~ 300 MHz for the sub-receiver.

AGC

When you turn the AGC function OFF {page 38}, the

receiving audio signals can be distorted. In this case,

decrease the RF GAIN, turn the pre-amplifier OFF, or

turn the attenuator ON. In general, the RF GAIN is

greatly reduced when the AGC is turned OFF.

SUB-RECEIVER

When you turn the sub-receiver ON or OFF, a

popping noise may be monitored from the speaker.

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