Kenwood TS-2000 Instruction Manual

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Contents

Kenwood TS-2000 Instruction Manual Manual pdf 81 page image

7315 OPERATOR CONVENIENCES• If the tuning was successful, “AT ” stopsblinking and the MAIN band red LED turns off.• If tuning does not finish within approximately20 seconds, an alarm (“5” in Morse code)sounds. Press [AT/ ANT1/2] to stop the alarmand tuning.If you access Menu No. 27 and select ON, receivedsignals will also pass through the internal tuner.When this function is ON, “RX AT” appears. This mayreduce interference on the receive frequency.Note:uThe internal tuner will not tune outside the available transmissionfrequency limits.uPressing [AT/ ANT1/2] for more than one second whiletransmitting, interrupts transmitting and starts tuning.uIf you would like to use a separate receiving antenna, accessMenu No. 18 and switch it ON. When this function is ON,received signals bypass the internal antenna tuner.uWhile using CW Full Break-in, the internal tuner will be in-line forboth transmitting and receiving.uTuning automatically turns OFF in approximately 60 seconds.“AT” disappears and the error beeps stop.uTuning may still continue when the SWR meter indicates 1:1.This happens due to the tuning algorithm; this is not amalfunction.uEven though the SWR meter shows more than one segment, theinternal tuner may not retune. This happens because of an SWRcalculation algorithm tolerance between 10 W (approx.) transmitpower for tuning and 100 W transmit power.uIf tuning does not finish even though the SWR meter indicatessmaller than 3:1, adjust the antenna system to lower the SWR,then attempt to tune again.uTuning may not reach an SWR of 1:1, depending on thetransceiver conditions.n PresettingAfter each successful tuning session, the ATPreset memory function stores the position of thetuning capacitor in the memory. The position ofthe capacitor is stored for each of the antennatuner bands (see the following table) and for eachantenna connector (ANT 1 and ANT 2).Press [AT/ ANT1/2] momentarily.• “AT ” will appear, showing that the internaltuner is in-line (not bypassed).• Each time you go across the antenna tunerband, the AT Preset memory is automaticallyrecalled to position the tuning capacitor withoutthe need for retuning. If no preset data existsfor a particular band/antenna combination, thenthe default data of 50 Ω is used.Note: Tuning may restart in order to obtain the optimummatching condition even though the current antenna tuner bandhas the preset data.)zHM(egnaRycneuqerFteserPTA58.1~30.0 05.2~58.1525.3~05.2 575.3~525.3527.3~575.3 01.4~527.330.7~01.4 01.7~30.705.7~01.7 05.01~05.701.41~05.01 05.41~01.4105.81~05.41 51.12~05.8105.12~51.12 05.52~05.1200.92~05.52 00.03~00.9200.15~00.03 00.25~00.1500.35~00.25 00.06~00.35ATTENUATORThe attenuator function is useful when extremelystrong signals exist nearby your receiving frequency.When these type of signals exist nearby yourreceiving frequency, the AGC function may beerroneously controlled by the strong signals, ratherthan by the target receiving signal. If this happens,the target receiving signal can be masked and buriedby the strong signals. In this case, turn theAttenuator function ON.1 Press [ATT/ F LOCK].2 “ATT” appears.To return to the normal operation, press [ATT/ F LOCK]again.Note: If the same band is selected for both the main transceiver andthe sub-receiver, the Attenuator function is on for both receivers.AUTO MODEYou can configure a maximum of 29 points (HF/50 MHz), 9 points (144 MHz band), 9 points (430(440) MHz band), and 9 points (1.2 GHz band) of themain transceiver VFO (VFO A and B) frequencies tochange the operating mode automatically when youchange the frequency.As a default, the following modes are programmed oneach operating band.HF/ 50 MHz band0.03 ~ 9.5 MHz: LSB9.5 MHz ~ 60 MHz: USB144 MHz band142 ~ 152 MHz: FM430 (440) MHz band420 ~ 450 MHz: FM1.2 GHz band (optional)1240 ~ 1300 MHz: FMTo add the frequency points to the Auto Modeselection: