KW Communications KW 2000B Émetteur-récepteur
Fabricant:
Modèle:
KW 2000B
Date:
1969
Catégorie:
Groupe:
Description:
Single Side Band Transceiver

Information

The K.W. 2000B Transceiver is a complete unit enabling transmission and reception of single-sideband and CW on all amateur bands between 1.8 MHz and 30 MHz. Reception of AM signals is also possible. It is capable of transmitting and receiving either upper or lower sideband signals. Separate power units for operation on 200—250v A.C. and 12v D.C. make the equipment suitable for “fixed” or “mobile” stations where a compact installation is required. 1—2 Receiver The Receiver section of the KW 2000A Transceiver is a double conversion superhet, with a CRYSTAL CONTROLLED 1st MIXER, and a highly stable VFO, a MECHANICAL FILTER for optimum performance on SSB. and a CRYSTAL CONTROLLED CARRIER OSCILLATOR. Independent Receiver frequency tuning (IRT) is provided with a deviation of approximately ±6 KHz. A product detector is used for all modes of reception. Output stage is capable of delivering 1.5 watts of audio to the loudspeaker. The equipment is fitted with a cystal calibrator 100 KHz marker. 1—3 Transmitter The exciter/transmitter section uses the same CARRIER OSCILLATOR, MECHANICAL FILTER. VFO and HF XTAL Oscillator as the receiving section. The PA stage has an output of 100 watts P.E.P. on SSB and 150 watts D.C. input on CW. A Pi output stage provides a variable output impedance. Independent Transmitter frequency tuning (ITT) is provided with a deviation of approximately ±6 KHz from the indicated dial reading. The equipment is fitted with Voice Control but can also be operated with a “press to talk” function. 1—4 Power Supplies Two power supplies are available, one for operation on 200—250v 45—65 Hz A.C. mains supply, and the other for operation on 12 volts D.C. battery supply. A special A.C. Power Supply is available for 100—125 volt 60 Hz line voltage. A power reduction switch is fitted to both types of Power Supply unit for 160 metre operation. The A.C. power supply has a loudspeaker incorporated within the cabinet. 1—5 Antenna The Antenna system used should have a low V.S.W.R. Antennas for use on “fixed” or “Mobile” installations are available. Generally a feed impedance of approximately 20 to 300 ohm is acceptable to Transmitter output Pi circuit.

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Service et Manuel de l'utilisateur
Type manuel:
Service et Manuel de l'utilisateur
Pages:
41
Taille:
2.59 Mbytes (2712768 Bytes)
Langue:
english
Révision:
Issue 1
Manuel-ID:
Date:
Qualité:
Document scanné, la lecture en partie mal, en partie illisible.
Date de transfert:
2014 02 19
MD5:
3c77cd7abf66dbdab669a905cf0671b1
Téléchargements:
1158

Information

Section 1 General Description and Specification 1—1 Introduction y 1—2 Receiver 1—3 Transmitter 1—4 Power Supplies 1—5 Antenna 1—6 Specification 1—7 Valve and Semi-Conductor Compliment Section 2 Circuit Description 2—1 Transmitter Circuits 2—2 Receiver Circuits 2—3 Oscillators 2—4 Power Supplies Section 3 Installation 3—1 Unpacking 3—2 Fixed Station Installation 3—3 Installation with the KW 1000 3—4 Mobile Installation 3—5 Mobile Antenna Installation 3—6 Noise Suppression 3—7 Initial Checks Section 4 Operation 4—1 Receiver 4—2 Transmitter 4—3 Setting of PA Load Control 4—4 Operation on other 200KHz Segments Section 5 Service Instruction 5—1 General 5—2 Trouble Analysis 5—3 Signal Tracing Procedure 5—4 Voltage and Resistance Measurements 5—5 Alignment Procedure 5—6 Pre-Selector Receiver 3.5 MHz Band 5—7 Wideband Couplers 5—8 S meter calibration 5—9 Pre-Selector Transmit 3.5 MHz Band 5—10 Carrier Balance (Continued) Page 5—11 Transmitter Sensitivity 5—6 5—12 VFO Calibration and IRT 5—6, 7 5—13 Pre-Selector General 5—7 5—14 Pre-Selector 28.4 MHz Band 5—7 5—15 Neutralising 28.4 MHz Band 5—7 5—16 Pre-Selector 21.3 MHz Band 5—7, 8 5—17 Pre-Selector 14.2 MHz Band 5—8 5—18 Pre-Selector 7.0 MHz Band 5—8 5—19 Pre-Selector 1.8 MHz Band 5—9 Section 6 Tables and Illustrations Table 6—1 Signal Levels Receiver 6—1 6—2 Signal Levels Transmitter 6—2 6—3 Voltage Measurements Receive Condition 6—3 6—4 Voltage Measurements Transmit Condition 6—4 6—5 Resistance Measurements 6—5 Illustration 6—1 Location of Pre-Selector Coils 6—6 6—2 Location of Valves 6—7 6—3 Location of Adjustments and Test Points 6—8 6—4 Inter-connections—Fixed Station 6—9 6—5 Inter-conections—Mobile Station 6—10 6—6 Inter-connections with KW 1000 linear Ampli..cr 6—II Repairs under guarantee

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