Kenwood TS-2000X Operation Notices, Agc, TX Signal Harmonics, Internal Beats, Visual Scan

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.

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.

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.

SUB-RECEIVER

When you turn the sub-receiver ON or OFF, a popping noise may be monitored from the speaker.

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