Kenwood TH-K2AT Service Manual

Also see for TH-K2AT: Service manual Instruction manual Instruction manual

TH-K2AT/K2E/K2ET27ADJUSTM ENTSingle Tone M odeThis mode is used to check the DTM F deviation.Operation■ 16key (K, K2, M , M 2 and E3 types)1. Press the [PTT] key on the transceiver to sw itch to thetransmission mode.2. Press the [M ONI] key to enter the single tone mode.3. Press any key from [1] to [8] keys to transmit a single tone.The single tone is consisting of eight frequencies.[1] 697Hz[2] 770Hz[3] 852Hz[4] 941Hz[5] 1209Hz[6] 1336Hz[7] 1477Hz[8] 1633Hz4. W hen t he [M ONI] key is pressed again during t hetransmission, the transceiver sw itches to the receptionmode, the single tone mode turns OFF.■ 4key (E type)1. Press the [PTT] key on the transceiver to sw itch to thetransmission mode.2. Press the [M ONI] key to enter the single tone mode.3. When the [VFO] key is pressed during the transmission, aDTM F “ D” dual tone (combination of 1633 Hz and 941 Hzfrequencies) is transmitted.4. When the [M R] key is pressed during the transmission,single-tone 1633 Hz is transmitted.5. W hen t he [M ONI] key is pressed again during t hetransmission, the transceiver sw itch to the reception mode,the single tone mode is turned OFF.• The single tone mode can be enabled only during thetransmission.• When DTM F memory is transmitted in the single tonemode, the single tone mode turns OFF.Adjustment M odeThis mode is used to replace or readjust the IC15 (EEPROM ).Adjust the follow ing adjustment items after setting thetransceiver to “ Adjustment M ode” .■ Adjustment ItemsA. Overvoltage w arning reference voltage (14.8V [DC IN])B. Battery terminal reference voltage (7.5 V [Battery terminal])C. Squelch (SQL1, SQL2)D. S-meter (Tw o segments in S-meter light, all segments in S-meter light)E. RX BPF (Low er limit frequency, center frequency, upperlimit frequency)F. 7.5V TX H pow er (Low er limit frequency, center frequency,upper limit frequency)G. 7.5V TX M pow er (Low er limit frequency, center frequency,upper limit frequency)H. 7.5V TX L pow er (Low er limit frequency, center frequency,upper limit frequency)I. 13.8V TX H pow er (Low er limit frequency, center frequency,upper limit frequency)J. 13.8V TX M pow er (Low er limit frequency, center frequency,upper limit frequency)K. 13.8V TX L pow er (Low er limit frequency, center frequency,upper limit frequency)L. DCS modulation balanceM .Tone deviation (Low er limit frequency, center frequency,upper limit frequency)N. DCS deviation (Low er limit frequency, center frequency,upper limit frequency)O. VOX sensitivity (Level 1, level 9)■ Operation in Adjustment M ode1. Turn the transceiver ON.2. Set the tone frequency to 151.4 Hz and the DCS code to023 in M enu M ode to adjust tone and DCS modulation.3. Set Adjustment M ode by shorting tw o lands (SET) on thecomponent side of the TX-RX unit (A/3).4. W hen the Adjustment M ode is set, the “ Overvoltagew arning reference voltage (14.8V [DC IN])” adjustment itemis displayed. (The “ ” icon on the upper side of the LCDblinks w hile the transceiver is in the Adjustment M ode.)The current adjustment value is displayed at the low er digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.5. The functions of transceiver keys in Adjustment M ode areas follow s:Short these tw o landsSETAdjustment itemBlinkThe value stored in theEEPROM . (00-FE)Current adjustmentvalue (00-FE)