Owner`s Manual
Contents
1. 0 5 AM FM CW SSB DSB over relay which operates without special external con Power Output 200 watts AM with full upward nections making it perfect for operation with low power ired modulation transceivers having no external amplifier control circuits Drive Required to Trigger Antenna Relay 1 watt Max Drive unmodulated carrier and FM 5 watts amplitude modulated carrier 3 5 watts The Footlocker has been designed and constructed to sup amplitude modulated peak 14 watts PEP press radiation that may cause television interference _ Input impedance unbalanced 50 ohms nominal TVI problem has been given full consideration in the Output Impedance unbalanced 50 ohms fixed design and the layout of the chassis There are however Antenna Switching e008 Automatic provided by some types of TVI that cannot be prevented within the RF sensing circuit amplifier This is particularly true in weak signal areas Power Requirements 13 6 volts 12v nominal In such cases a good commercial low pass filter is recom 50 amps mended Cable Connector Data Input amp Output requires PL 259 SECTION II UNPACKING you Prompt action will speed adjustment Our warranty does not cover malfunction or damage nich isa result of improper handling by a carrier _2 2 WARRANTY REGISTRATION Fill out the enclosed Warranty Card and mail immediately SECTION III I2. 450VDC Ele Capacitor 200uf 150VDC Ele Diode 1N270 Diode 1N270 Diode 1N5054 Fuse 3 4 amp AGC 3AG Fuse 40 amp AGU 40 Relay 4PDT Relay SPST 12 VDC Coil Tank Choke 800uh Choke Plate Coil Z144 Meter 0 1 mA Relative Power Lamp Bayonet Base 1495 Lamp Bayonet Base 1495 Parasitic Choke Parasitic Choke Transistor MPS 6516 Transistor 2N696 IN5054 Diode PARTS LIST Part No Symbol 721609 Q3 725717 Q4 721574 Q5 720015 Q6 721157 R1 721660 R2 721613 R3 721158 R4 721700 R5 721158 R6 721161 R7 721159 R8 721160 R9 721121 R10 721120 R11 725717 R12 721158 R13 721158 R14 721156 R15 721156 R16 721156 R18 721779 R19 765722 R20 765722 R21 765713 R22 710009 R23 710227 R24 730006 R25 730238 R26 270014 R27 721902 R28 721124 R29 728025 S1 795680 T1 710222 T2 710222 V1 721950 V2 721950 TH1 761115 TB1 761114 MO1 765713 R30 NOTE Transistor GDC 50 Transistor GDC 50 Transistor GDC 50 Transistor GDC 50 Resistor 18 Ka 1 2 watt Resistor 270 a 1 watt Resistor 18 2 watt Resistor 270 1 watt Resistor 100 1 2 watt Resistor 22K 1 watt Resistor 100 1 2 watt Pot Linear 7 5K a Resistor 4 7K a1 watt Resistor 15K 1 2 watt Resistor 330 1 2 watt Resistor 270 1 4 watt Resistor 33 1 4 watt Resistor 33 a 1 4 watt Resistor 3 5K 10 watt Resistor 2K 10 watt Resistor 220K a 1 watt Resistor 220K 1 watt Resist
3. Aygain 640 FOOTLOCKER AMATEUR RADIO LINEAR AMPLIFIER ORDER NO INSTALLATION amp ae OPERATION INSTRUCTIONS SECTION GENERAL DESCRIPTION 1 1 INTRODUCTION 2 1 UNPACKING Carefully remove the Footlocker Amplifier from the carton Examine it closely for signs of shipping damage If in spection shows damage the delivering carrier must be contacted immediately and a claim filed The responsibility for safe delivery rests with the carrier The responsibility of obtaining reimbursement rests with 1 2 TECHNICAL SPECIFICATIONS Mechanical _The Footlocker Linear Amplifier is a precision built amplifier of advanced design It utilizes two tubes six Height including feet 0 cc eee eee eee ee 5 9 16 transistors in a tuned grid tuned plate circuit for amplifi e T A A Secs oo ate be elon ea cs Tighe se eames ae foes 14 cation of AM FM CW and SSB signals DOO aicaeiere cg tl es hag Mimbo vuceddeecty at 111 2 Net Weights rieron oeie Ena eee ene eee 9 Ibs a Shipping Weight 0 cece eee eee eee ee eee 10 Ibs The Footlocker as designed for 12 DC negative ground Construction Lightweight aluminum chassis with mobile installation and is supplied with a remote ON OFF tugged steel cover switch which allows the operator to trunk mount the Foot Electrical ocker Frequency Range sssessrreere Amateur 10 meter band The Footlocker has a built in automatic antenna change Types of Emission
4. the shipment be well packed and fully insured Damage claims must be settled between you and the carrier and will greatly delay any returns Proper packing normally avoids this trouble ALL SHIPMENTS MUST BE SENT TO US PREPAID We do not accept collect shipments All returns should be made in our standard cartons only so save your carton when un packing the unit When a shipment is returned it will be handled in ane of three ways 1 Where all service is in warranty the shipment will be returned prepaid by a carrier of our choice 2 If there are any charges not covered by warranty we will hold the shipment and advise you of costs which you can then send 3 Or upon your written authorization we will ship COD for any charges not covered by warranty then the carrier will collect these charges and the transportation costs on arrival Unclaimed or refused COD shipments will not be reshipped until payment of service and transportation charges is received Shipment will then be made collect for reshipment transportation charges Unclaimed equip ment automatically becomes the property of the Manufac turer 60 days after date of refusal or return and will be disposed of for payment of charge due NOTE We WILL NOT ship by means of a carrier that will not fully insure the shipment Some carriers have a 200 00 limit The exception to this is when there is no other means APO FPO etc of shipment than parcel post and then we wi
5. NSTALLATION 3 1 LOCATION The location of the mounting is not critical however the Footlocker was designed to be mounted on the floor of the trunk Four support legs are provided to secure the Foot locker to the trunk floor These support legs attach to the Footlocker by means of the screws that hold the feet on Unscrew the feet put the support legs on the screws and put the feet back on SCREW TO TRUNK FLOOR yL Consideration must be given to provide adequate ventila tion and to enable the operator to set up and check the Footlocker when it is installed The Remote Switch should be mounted in a convenient position on the dash The two wires should be routed back to the Footlocker and connected to the terminal strap marked Remote Make sure that the red wire goes to the red terminal and the black wire to the black terminal A good ground should be made on the remote switch through the mounting lugs otherwise the ON OFF indicator lamp will not light when the Footlocker is switched to ON 3 2 REGULATOR TEST Before connecting the primary power cables to the supply and the battery terminals the voltage output of the gener ator or alternator should be checked Turn on the car headlights for five minutes without starting the motor This will discharge the battery slightly Connect an ac curate voltmeter from the generator output terminal to ground and start the motor WITH THE MOTOR AT A FAST IDLE THE GENERAT
6. OR OR ALTERNATOR OUTPUT VOLTAGE SHOULD NOT EXCEED 14 5 VOLTS If it does the auto motive voltage regulator should be recalibrated for a maximum output voltage from the generator or alternator of 14 5 volts If the generator output voltage is between 13 5 and 14 5 volts the regulator will not need adjustment For regulator adjustment refer to the shop service manual for the automobile available from your car dealer The Footlocker draws up to 50 amps of current when trans mitting If the electrical system of your vehicle is not capable of supplying this current at 13 6 volts then full RF power output will not be achieved Connect the Foatlocker directly to the vehicle Bonne using 6 or heavier wire for both positive and negative The vehicle chassis is a poor ground return path at this current and should not be used As an added safety pre caution it is strongly recommended that an additional 40 amp fuse and holder the type obtainable from most elec trical contractor supply stores be inserted in the line directly at the positive terminal This will protect battery should a short circuit develop in the wires going to the Footlocker CAUTION OBSERVE POLARITY positive to 12v terminal and nega tive to 12v terminal REVERSING POLARITY WILL CAUSE DAMAGE TO VEHICLE AND FOOTLOCKER Connect a length of coaxial cable RG 58 U or similar between the transceiver and XCVR socket NOTE The antenna Sysient Should b
7. d to provide maximum output and should not be adjusted Adjust the drive control until the power output is about 150 200 watts The amplifier is now adjusted to give 150 watts output with upward modulation to 300 watts NOTE Always use a good peak reading watt meter such as the Hy Gain 421A when adjusting an amplifier If the average output power decreases with modulation then either the transmitter exciter is incapable of upward modulation or the amplifier has not been tuned up correctly and the above procedure should be rechecked If this does not correct the situation the drive control on the rear panel should be adjusted for a slightly lower power level necessary to produce upward modulation than a carrier power of a higher level with downward modulation this will increase your communication range and provide a clearer signal with much less distortion For best AM operation the linear must be tuned according to above procedures Many misconceptions regarding linear operation exist among linear users Reviewing a few points regarding proper linear operation will help to Printed in USA provide better tune up and communications for the user 1 The linear amplifies the radio frequency RF signal 2 If the output signal reproduced is identical to the input except stronger the amplifier is said to be linear If not the amplifier is non linear 3 Non linear operation produces spurious outputs and distortion of the si
8. e checked for VSWR of less than 2 1 before the Footlocker is used For best perfor mance of your communication system the VSWR should be as low as possible 3 3 OPERATION When the Footlocker is installed as outlined above oper ation is simply achieved by switching the remote unit ON and OFF This controls the Footlocker A built in delay in the automatic antenna change over holds the relay in for about one second This is to prevent chatter when using SSB single side band transceivers Set the siide switch on the rear panel to the TUNE posi tion Adjust the drive control for midway position Apply 3 5 watts drive power by keying the transceiver micro phone and quickly adjust the tune control for maximum reading on the output meter Remove the drive power after adjustment E 3 NOTE Do not apply drive power for more than five seconds without adjusting the tune control or damage to the tubes can result Reapply drive power and adjust the drive control so that the amplifier produces about 100 watts about 5 6 on the meter Adjustment of the input tuning coil on the underside of the Footlocker using a hex shaped plastic alignment tool may be necessary to achieve maximum power output Set the Tune Operate slide switch to the Operate position Reapply drive power and adjust the drive control maximum output readjust the Tune and Input tuning coil for maxi mum output i NOTE The load capacitor is factory adjuste
9. gnal 4 All spurious signals use up power 5 All power used to produce distortion and spurious signals is power not being used for communication 6 The Footlocker provides a 300 watt RF envelope maxi mum power output 7 Any attempt to operate AM at the 300 watt carrier level will produce downward modulation with distortion and spurious signals 8 Distortion and spurious signals lost power will occur in all linear amps of operation at maximum carrier power is attempted 9 Al linear amplifiers should be operated at about one half the maximum carrier output to allow for modulation expansion of the carrier 10 Operation without leaving room for modulation expan sion will not provide good communication The carrier contributes nothing toward intelligibility only good modu lation can carry intelligence Running higher carrier power and lower modulation is a detriment rather than an asset PN 800625 wl TO ANT SECTION IV SERVICE INFORMATION 4 1 RETURNING EQUIPMENT FOR SERVICE DO NOT ship equipment to the Manufacturer without prior authorization We prefer to send special shipping labels which will avoid the delay of unexpected shipment If time is extremely important wire or call for approval and we will rush labels to you When a shipment is ex pected even the time of sending the labels is less than that lost when an unexpected shipment is received It is VERY IMPORTANT that
10. ide of our factory nor to accessories used therewith not of our own manufacture nor to any cases where the serial number has been removed defaced or changed Hy Gain Electronics Corporation reserves the right to make any changes deemed necessary or desirable without ad vance notice or incurring any obligation to make like changes in units previously manufactured or sold This warranty does not cover transportation or instal lation costs that may be incurred Hy Gain Electronics Corporation s sole liability is the remedy of any defect for ninety days Hy Gain Electronics Corporationis not respon sible for personal injury or property damage resulting from improper or careless installation not intended by the manu facturer No person is authorized to assume for us any other lia bility in connection with the sale of our products All warranties are void and terminated one year after the last unit of its type and design has been manufactured by us Description Capacitor 2 2 pf Cer Disc Capacitor 20pf Cer Disc Capacitor 0 1 uf Flat Film Capacitor Load 326 pf Variable Capacitor Tune 50pf Variable Capacitor 00luf 2 5KV Capacitor 10pf 3KV Capacitor 001luf Capacitor 390pf Capacitor 00luf Capacitor 2200 pf Capacitor 003 uf 3KV Capacitor 6800 pf Capacitor 10uf Ele Capacitor 500uf Ele Capacitor 20 pf Cer Disc Capacitor 00luf Capacitor 00luf Capacitor 40uf 450VDC Ele Capacitor 40uf 450VDC Ele Capacitor 40uf
11. ll ship by this means with your written agreement that you assume any loss over that which the carrier will insure COD shipments cannot be made to APO FPO ad dresses 4 2 REPLACEMENT PARTS ORDERING All replacement parts orders must be prepaid or COD only Replacement part price quotes will be furnished on request for those who desire prepaid shipment or cannot accept COD shipments 4 3 SHIPPING ADDRESS All requests inquiries warranty claims or equipment returns should be made to Hy Gain Electronics Corporation 8601 N E Highway 6 Lincoin Nebraska 68507 Attn Customer Service Manager R F SNIFFER POWER SUPPLY NI 1495 LAMP SECTION V WARRANTY Hy Gain Electronics Corporation warrants each new product manufactured to be free from defects in material and work manship and agrees to remedy any such defect or to fur nish a new part in exchange for any part of any unit which under nomal installation use and service discloses such defect within ninety days from the date of purchase by original owner The unit serial number must be registered by the original owner at the time of purchase to validate the warranty This warranty does not extend to any of our products which have been subjected to mis use neglect accident in correct wiring not our own improper installation or to use in violation of instructions furnished by us Nor does it extend to units which have been repaired or altered out s
12. or 220K 1 watt Resistor 10K 2 watt Teflon Wire 6 in 22 Ga Str Teflon Wire 6 in 22 Ga Str Teflon Wire 6 in 22 Ga Str Teflon Wire 6 in 22 Ga Str Resistor 0 68 5 watt Resistor 0 68 5 watt Resistor 0 68 5 watt Resistor 0 68 5 watt DPDT Slide Switch Coil Input Toroid Power Transformer Beam Pentode Tube Beam Pentode Tube Relay Thermal Terminal Locking Motor 12 VDC Resistor 33 1 4 watt For best results always use matched pairs of type 8908 output tubes available from Hy Gain Customer Service Part No 760259 760259 760259 760259 721339 720016 720017 720016 721285 721373 721285 721451 721367 721340 721305 721112 721103 721103 721515 721527 721383 721156 721156 721418 620001 620001 620001 620001 722224 722224 722224 722224 700206 720018 730217 760004 760004 722167 540226 740004 721103
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