Kenwood TS-480SAT, TS-480HX Operation Notices, DC Power Supply, FAN Noises, Internal Beats, Agc

16 TROUBLESHOOTING

OPERATION NOTICES

The transceiver 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 91}, this transceiver requires a supplied DC voltage source of

13.8V ±15%. If you find that the transceiver cannot be switched ON, or that it shuts 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.

FAN NOISES

When the TX/ RX unit is installed in a non-ventilated area, the cooling fan(s) may increase in speed and emit a high level of noise for a long time. This is because the TX/ RX unit cannot be cooled down with the regular fan speed. In this case, relocate the TX/ RX unit so that air can easily flow through the TX/ RX unit to keep the unit cooled.

INTERNAL BEATS

On some spots of the receiver frequencies, 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 frequency.

15.600.00 MHz, 31.200.00 MHz, 46.800.00 MHz

AGC

When you turn the AGC function OFF {page 35}, 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 must be greatly reduced when the AGC is turned OFF.

60 m BAND OPERATION (K-TYPE/ U. S. A. ONLY)

Effective from July 3, 2003, FCC Report and Order (R&O) in ET Docket 02-98 granted US amateurs secondary access to five discrete channels in the vicinity of 5 MHz. General, Advanced, and Amateur Extra licensees may use the following five channels on a secondary basis with a maximum effective radiated power of 50 W PEP relative to a half wave dipole. Only upper sideband suppressed carrier voice transmissions may be used. The frequencies are 5330.5, 5346.5, 5366.5, 5371.5 and 5403.5 kHz. The occupied bandwidth is limited to 2.8 kHz centered on 5332, 5348, 5368, 5373, and 5405 kHz respectively. The TS-480 transceiver stops at this new 60 m band as you scroll up or down amateur radio frequency bands. For more information, contact ARRL or search their Web site (http://www.arrl.org) with a key word, “60 meter”.

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