SECTION 11 DESCRIPTION ALL SOLID-STATE LINEAR AMPLIFIER The 1C-2K1 s 2 .complete solid:state kilowatt linear amplifier. it employs: newly developed high power transistors which are designed for HF band 558 USE, a3 a parallel push-pull amplifier.: These transistors: have good linearity and high: power: (Pc: 300W) characteristics and give high performance: ALL-BAND, INCLUDING NEW BANDS CAPABILITY. The ICKY L covers all amateur HF bands from 1.
e gle VIR TIR UNPACKING Carefully overbore your amplifier and power supply from the packing cartons and examine them for: singe of chinning damage. Should any be apparent, notify the delivering Cartier or dealer immediately. stating the full extent of the damage. It is recommended you keep the shipping cartons. In ‘the ‘event storage, moving, o reshipment becomes necessary; they come in handy.. Accessory. Hardware, cables, etc.. are packed with the sets.
The: power supply 1C-2KLPS can be used for AC 117 volts or 235 volts by changing the connect: sons of the internal terminals. We recommend AC 235 volts operation. hie cause the AC current will be decreased by half, and the AL line will keep good regulation. For terminal connections for AC 117 volt or 235 volt operation; refer to the following drawings. For 117V For 235V (240V) % CAUTION: The terminal strip is located inside of the fid. (Refer to page 9.) When you open this lid, unplug the AT plug.
EXCITER The ICKY L requires a transmitter o a transceiver as an exciter which has at least the following specifications: Output post 80 watts armors Output impedance 50 ohms Operating Bands One or ‘more ‘of 1.8MHz = MHz bands inclining MHz, MHz, and 24MH2 Bands) : Operating Modes One or more of S8B C Wand RATTY ‘Also it requires an external Nontropical terminal: {The ZIGZAG puts out negative voltage for ALC control, and: the exciter should be controlled with: the negative voltage.
1f you would like to use another transceiver as the exciter, use ALC and T/R switch control terminals as follows: NOTE. Wuhan the exciter dares not have an ALC control terminal, or is not controlled by negative ALC voltage, or when the ALG cable does:not connect 1o tha ‘ALC control terminal 'of the exciter, the [C-KL will not work normally. S0 be sure to make proper connections: Gable Connections with Exciters Other Than COM s candid fimz&mimm Cronin Wii.
SECTION IV CONTROL F FRONT PANEL METER PROTECTOR: INDICATOR TRANSMIT INDICATOR SO METER SWITCH ; LINEAR AMP INDICATOR LOWER SWITCH DEANS SWITCH LINEAR: AMP SWITCH VINDICATOR POWER SWITCH Switches the input AC power 1o the external AC power supply; 1C:2KLPS; LINEAR AMP SWITCH Switches the linear amplifier. [In the ON position.
7..PROTECTOR INDICATOR illuminates when the protection circuit works. At the same Time the amplifier stops transmitter: landing the output parer of the exciter js fed directly to the antenna. This condition sari b reset by turning OFF the {2) LINEAR AMP switch. If the LINEAR AMP switch jx turned OFE. and this condition remains, then it is caused by overheating of the PA units, and will continue until the temperature of the PA Units go down to a safe level.
14 POWER SOCKET Connection the cable from the external-power supply, 16-GULPS, or suitable DO source to this socket, 15, T/R CONTROL TERMINAL Connect the transmit/receive control cable from: the exciter. 16, ALC OUTPUT TERMINAL Puts out the ALC control voltage: 17.. GROUND TERMINAL To prevent electrical shock: TV Chandon other problems. be sure to ground the equipment through the GROUND TERMINAL. For best results Use 8 heavy a gauge wire Or strap as possible and make the connection as short as possible.
0 SECTION V OPERATION After connecting an:antenna, ‘coaxial cable; st¢; (Do not connect the: AC power plug of the to an AC outlet vet; set knobs and switches as follows: 1C-2KL POWER SWITCH OFF LINEAR AMP SWITCH OFF METER SWITCH Ve ; BAND SWITCH AUTO (When using 1-707 or 1-720 with LDA unit installed) Desired Operating Band: {(When using :another exciter.
2.5 Control the MIC Gain or driving level: of the exciter to make it have a.proper ALC level. The ALC level may change when the amplifiers muted ON; 3. Check the SWH of the antennas) at times, and maintain good conditions, 4. ‘When operating on CW or RATTY, do not exceed: 10 minutes transmit continuously. I you wish fo transmit more than 10 minutes; reduce the driving power from the exciter and be store o use the stand of the 1C:2K L to ensure good ventilation: from the bottom, 5.
122 5. The ALC control cable is disconnected, or the ALC level adjustment is improper. case, the amplifier:is turned: OFE and the driving power is Yed 1o the load directly: COOLING FAN 1C-2KL and 1C-2KLPS have cooling Tans to manta good ventilation.
SECTION VII THEORY OF OPERATION IC-2KL The 1C-2K 1 15 an all solid-state HF B00W finer amplifier; and consists of MAIN unit; PA unit, LPE {Low-Pass Filter unit, BAND SWITCHING unit; DC-DC Converter unit and LED unit INPUT CIRCUIT (MAIN UNIT) When the finer amplifier is turned OFF; or the exciter is in the receive. mode, the input terminal J1 s connected directly to the:antenna connector through the contacts of RLY.
16 The drawings a block diagram of the amplifier module. Black Diagram of PA Module Pl #2 POWER: AME. Q102 T HV {40V} T3V 01 and: Q2 are heavy duty power transistors: which: are designed for HF 58B amplifiers with maximum ratings of: Veep 58V i¢ 20A Pe 300w The output signals from power divider L3 are fed to each input terminal, P1, of the amplifier modules.
IF each RF output power of the modules becomes highly unbalanced a winding of L8 picks this G and: pits out a‘control signal 1o the protection circuit: 1.7 15 a step-up transformer for a 50.chm load. LOW-PASS FILTER UNIT This Unit consists of Tow:pass filters for each band {MHz and 21MHEZ, dnd MHZ and 28MH2z use the same filters.}, SWERVE: detecting: circuit,: T/R relay ‘and low-pass filter selecting relays. Each low-pass filter is'a & pole Kuibyshev Tow-pass filter and has a 45dB attenuation level.
g DICTA s 3 comparative which detects the SWERVE and puts out —8 vats ALC voltage when SWERVE is 2.0. 1t its output voltage becomes =10 volts [SWERVE: 2.5), the power supply {T13V) will bé shut off, 4 DICTA detects the driving power too, and puts out -8 volts ALC voltage when the driving power is 70 watts. If the power reaches 90 watts (ALC voltage is 10V, T13V will be'shut'off.
When the LINEAR AMP switch:is turned OFF, 13 volts 15 applied 1o the base of Q4, and Q4:is tired (ON even i the ‘exciter:is in the transmit mode. Thus: Q5. Q6 and Q7 are turned OFF, T13V is not applied; and the set is not actuated. 8o the output power of the exciter is fed to the antenna directly. When' the output voltage of ‘the ‘compactors becomes =10 volts; or the unbalanced detection voltage from L6 becomes =3 Volts, Q2 and 03 are turned ON, the base of 05 goes near ground level.
Lana When' the BAND switch is in other positions, RLY s opened, ‘and the band control} voltages and reference voltage are not fed to 1C1. Instead of this, the base of the relay control transistor for the selected band is grounded through the contact of the band switch, the transistor is turned ON. and the reformatory the banding the LPE Unit are actuated. NOTE: The U.B.A. version does not work on MHz and: 28MH2 bands.
