kaar engineering corp CONALERT II Page 4 Instructions And Operating Manual Download | Manualshive

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Summary of Contents for CONALERT II

Page 1: ...KAAR ENGINEERING CORP Palo Alto U S A ...

Page 2: ...41 ti ...

Page 3: ...CONALERT II OPERATING MANUAL Model Designations Cabinet Style 117R905 Relay Rack Style 117R906 Mfd by Kaar Engineering Corporation 2995 Middlefield Road Palo Alto California U S A ...

Page 4: ...ore Monitoring Conditions 7 T Identification of True CONELRAD Alarms 7 g Tests for Alarm Function 8 5 INITIAL CHANNEL TUNEUP 8 a General 8 b Tuning Procedure 10 c Channel RF Gain Control Adjustment 1 0 a Modification for Crystal Control 10 ILLUSTRATIONS Figure Page 1 Front View CONALERT II 2 2 CONALERT II Channel Tuning Controls 9 APPENDIX TECHNICAL DATA Technical data for use by electronic techni...

Page 5: ... lives every design factor which makes for the utmost reliability has been incorporated into the unit The result is an instrument which performs its monitoring function more reliably than any human operator who might be assigned to the task it even sounds its warning if a failure occurs within it self or when a failure occurs at the broadcast station which it monitors It cannot of course think for...

Page 6: ...this switch is OFF VOLUME control Adjust for comfort able level if using aural monitoring louder if using si lent monitoring CHANNEL switch Select A B or C positions according to schedule After Conelrad Alert starts ih7i7 positions will be silent turn to the Conel rad positions 640 kc or 1240 kc to hear Civil Defense broadcasts MONITOR switch Pus ap to listen Push down to reinstate monitor ing fun...

Page 7: ...rity and Civil Defense measures as requested by the United States Government this is a CONELRAD continued for an indefinite period Civil Defense information will be broadcast in most areas at 640 or 1240 on your regular radio receiver 8 Cut transmitter carrier regular broadcasting ceases until the all clear All radio stations in the area must intercept this CONELRAD warning Immediately upon receip...

Page 8: ...dicated the installation should be performed by experienced technical personnel Installation details such as the proper routing of wires coaxial cable terminations etc will vary from installation to installation hence a detailed description of such factors cannot be included in this book b Antenna Antenna type depends on strength of signal from key sta tions to be Fiot Tilored and amount of interf...

Page 9: ...5 ohm coaxial cable such as Type RG 58 U The loop should be 15 to 20 feet long and supported on a pole in a circular or rectangular position by twc or more cross bars The lead in portion may be any length up to 100 feet as necessary to permit mounting the loop well clear of obstructions With the Conalert in operation the loop is rotated until the interfering signal drops out In some cases it may a...

Page 10: ...oor bell for example may be connected in series with a battery of the proper voltage and the two wires which would normally connect to the push button are ex tended to terminals 5 and 6 This arrangement has the advantage that the alarm will be indicated when a power failure occurs If alarm with power failure is not important a step down transformer may be substituted for the battery f External Res...

Page 11: ... will glow 3 External alarms will be activated provided the EXTERNAL ALARM switch has been left in the ON position NOTE These conditions will continue until operator takes action e To Restore Monitoring Conditions If announcements indicate that an alarm was for test purposes or if listening indicates that alarm occurred for other reasons as for example when signal failure occurs for a period of ti...

Page 12: ...ons the third channel may be detuned so that no signals can be heard A satisfactory alarm test then consists of rotating the CHANNEL switch to this position After a delay period of 2 1 2 seconds the alarm circuits will be energized 3 In areas where all three key channels are tuned to key stations the alarm may be tested by disconnecting the antenna or by shorting it to ground for a period of more ...

Page 13: ... ACTORY CHANNEL TUNING RANGE SETTING A 535 TO 1650 KC B 535 TO 1650 K C 800 TO I DO NOT DISTURB Figure 2 CONALERT II Channel Tuning Adjustments 9 ...

Page 14: ... position between these two points Rotate the RF and ANT adjustments and 0 in a similar manner to obtain the central point of maximum volume Now repeat the entire procedure for Channel B and for Channel C in turn starting with the setting of the front panel controls c Channel RF GAIN Control Adjustment The channel gain controls are screwdriver type controls on the back of the chassis In the fully ...

Page 15: ...es If in doubt concerning these adjustments and the fourth method cannot be employed simply observe performance of the CONALERT II on each channel at the time of a scheduled CONELRAD test as conducted by the key stations in each area d Modification for Crystal Control In areas where one or more key stations are very weak it may be desirable to replace the OSC 01 adjustment with a crystal This will...

Page 16: ...th the carrier by the purchaser within five days after receipt of goods claims for loss in transit should be filed in a similar manner Forms for filing claims can be obtained from the carrier The factory will gladly assist the purchaser upon request All packing is in accordance with the requirements of the Consolidated Freight Classifications Should it be necessary to return the equipment or any p...

Page 17: ...ONAIGCT CRYSTAL AS 5 0 444 eV PASUGP LING SNOW FOP 44144 11 X4L A ONLY AVI 3 1344 GIZIL41 1 47 1212 0 00 C26 IO JO 1 N 1 5f0 V ALARM PGSGT ALARM 32A 0 S2 1 5esGT LSI S2a AURAL LLNI 0 PAS 3106 AVC VAC pT15 0 ALARM IZTACT ALARM AMP VAP V6 GT I tv 6A U 6 Are 1239 100 I IFT PGLAV CONTROL V7 6Alutr R7 5 cxve AUDIO ALARM AUDIO 544 prromALI ALARM GXT ALACTA SAD 63 v ALARM GXT ZGSGT A Inc NOTG 3 LIKILLSS ...

Page 18: ...t Newark 4 N J Brightness of Indicator Lights The brightness of the indicator lights may be in creased or decreased by adjusting the value of R25 and R38 Some production units may be supplied with resistors whose values differ from those shown on the sche matic in order to compensate for variations in the plastic indicator lens Crystal Control Use low drift crystal ground for 32 uufd input cap fre...

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