Equipment information:

KW Communications KW 202 Receiver
Manufacturer:
KW Communications
Model: KW 202
Date: 1973
Category: Radio, Communication
Group: Receiver
Description:
Information:
                                    The K.W, 202 Receiver has been designed far optimum
performance on SINGLE SIDEBAND SUPPRESSED CARRIER, with
excellent results on C.W. and A.M. It operates on all
Amateur Bands between 1.8 MHz and 30 MHz. The Receiver
employs thirteen valves in a double-conversion superhet
circuit, plus 12 diodes and one transistor. The K.W. 202 has
a built-in power unit operating from a 105 - 120, 210 -
240v, 45-65 Hz AC Supply.

A two-speed V.F.O drive is used to rotate the scale which is
calibrated 0-500 KHz, and can be re-set for optimum read out
accuracy. A plug-in CRYSTAL CALIBRATOR provides marker
signals every 100 KHz for checking the dial calibration
accuracy; (This is available as an optional extra). A
built-in Q-MULTIPLIER improves the selectivity for CW
operation, and has a NOTCH facility for rejecting unwanted
heterodynes and certain interfering signals.

These manuals are available for the above equipment:

KW Communications -- KW 202 -- Service and User Manual
File name: KW-5486-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 28
Size: 2.07 Mbytes (2175296 Bytes)
Language: english
Revision: Issue 3
Manual-ID/Number:
Date: April 1973
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: dd3629b1ab55f3d97f53af980da84e62
ed2kID: 47dcce841f225ad374cde08282f83637
Downloads: 154 since 19 February 2014
Information:
SECTION 1

GENERAL DESCRIPTION AND SPECIFICATION

1.1	Introduction	1-1

1.2	Specification	1 - 1, 2

1.3	Valve and Semi-Conductor Complement	1-2
SECTION 2

CIRCUIT DESCRIPTION
2.1	RF and Mixer Circuits	2-1
2.2	Oscillator Circuits	2-1
2.3	IF and Detector Circuits	2 - 1,
2.U	Q Multiplier	2-2
2.5	S Meter	2-2
2.6	Audio Circuits	2-2
2.7	Wavechange Switch	2-2
2.8	Pre-Selector	2-2
2.9	Power Supply Unit	2-3

SECTION 3 INSTALLATION.

3.1	Unpacking

3.2	Station Installation

3.3	Antenna 3.U	Loudspeaker

3.5	"Anti-Trip" and "Side Tone"

3.6	Initial Checks


OPERATION

U.l General	U - 1

U.2 SSB Operation	U - 1

U.3 A.M. Reception	U - 1

U.4 C.W. Reception	U - 1, 2

U.5 Q Multiplier	U - 2

U.6 Calibration	h - 2

U.7 S Meter	U - 2

U.8 Muting	U - 3

ERVICE INSTRUCTIONS

5-1 General	5-1

£•2 Trouble Analysis	5-1

5*3 Signal Tracing Procedures	5 - 1, 2

5«U Voltage and Resistance Msasurements	5-2

* 5*5 Alignment Procedure	5 - 2, 3

5*6 Pre-Selector 3*5 MHz Band	$ - 3, h

5-7 IF Trap	5 - U

5.8 1*55 KHz IF Transformers	5 - U

5«9 V.I.F. Transformers	5 - U, 5

5*10 'S' Ms ter Calibration	5-5

5«11 V.F.O. Calibration	5-5

5.12 U.L.S.B. Switching	5-6

5-13 Pre-Selector 29.5 MHz Band	5-6

5*lU Pre-Selector 21.0 MHz Band	5-6

5«l5 Pre-Selector lU.O MHz Band	5-6

5*16 Pre-Selector 7*0 MHz Band	5-7

5*17 Pre-Selector 1.8 MHz Band	5-7

5.18	Pre-Selector Coil Cores	5-7

5.19	Field Alignment	5-7

SECTION 6

TABLES AND ILLUSTRATIONS

TABLE 6.1 Voltage and Resistance Msasurements	6 - 1, 2

6.2	Signal levels	6-3

Fig. 6.1 Station Installation

6.2	Location of Adjustments under Chassis

6.3	Location of Valves and Crystals

KW-5486-Manual-Page-1-Picture
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