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AA7

 

  

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AA7 ACTIVE ANTENNA 
Quick Reference Page Guide 

Introduction to the AA7 .....................................4 
Circuit and Device Description ..........................4 
Active Antennas: Circuits With a Purpose ........5 
Schematic Diagram ..........................................6 
Parts Layout Diagram .......................................7 
Parts List ...........................................................8 
Assembly Instructions .......................................9 
Using your AA7 .................................................12 
Troubleshooting Guide .....................................13 
Active Antenna Comparisons ...........................14 
Ramsey Kit Warranty ........................................15 

Manual Price Only: $5.00 
Ramsey Publication No. MAA7 
Assembly and Instruction manual for: 

    RAMSEY MODEL NO. AA7 ACTIVE ANTENNA KIT 

 

REQUIRED TOOLS

 

Soldering Iron (WLC100) 

Thin Rosin Core Solder (RTS12) 

Needle Nose Pliers (MPP4 or RTS05) 

 

ADDITIONAL SUGGESTED ITEMS

 

 

Helping Hands Holder for PC Board/Parts 
(HH3) 

Technician’s Tool Kit (TK405) 

Desoldering Braid (RTS08) 

TOTAL SOLDER POINTS 

63 

 

ESTIMATED ASSEMBLY 

TIME 

Beginner .............. 2  hr 
Intermediate ........ 1 hr 
Advanced ............ 30 min. 

RAMSEY ELECTRONICS, INC. 
590 Fishers Station Drive 
Victor, New York 14564 
Phone                 (585) 924-4560 
Fax                     (585) 924-4555 
www.ramseykits.com 

Содержание AA7

Страница 1: ...ludes internal telescopic whip antenna plus auxiliary antenna input jack for jazzing up existing antennas Clear concise assembly instructions carefully guide you to a finished kit that works FIRST tim...

Страница 2: ...wave Motion Detector ML Music Lights Kit LC1 Inductance Capacitance Meter RAMSEY AMATEUR RADIO KITS HR Series HF All Mode Receivers QRP Series HF CW Transmitters CW7 CW Keyer QRP Power Amplifiers RAMS...

Страница 3: ...pose 5 Parts List 6 Assembly Instructions 7 Schematic Diagram 8 Parts Layout Diagram 9 Initial Tests 12 Using your AA7 12 Troubleshooting Guide 13 Active Antenna Comparisons 14 The AA7 s Enclosure 14...

Страница 4: ...If what you want is a great quality active antenna for a whole lot less than others sell it for the answer is obvious The Ramsey AA7 active antenna An active antenna is a compromise between what is id...

Страница 5: ...r hooked to a piece of wire The AA7 was designed with reference to research carried out by Ulrich L Rohde and T T N Bucher who co authored Communications Receivers Principals and Design New York McGra...

Страница 6: ...7 F to 10 uF electrolytic capacitor C4 RESISTORS 1 100 ohm brown black brown R4 2 100K ohm brown black yellow R3 R6 1 220K ohm red red yellow R2 1 1M ohm brown black green R1 1 10K ohm PC mount poten...

Страница 7: ...solder A cardboard box cut so that it is flat tends to work well if you do not have such a surface conveniently available Always use caution operating and storing a hot soldering iron We like to live...

Страница 8: ...AA7 8...

Страница 9: ...AA7 9 AA7 PARTS LAYOUT DIAGRAM...

Страница 10: ...nstall R6 100K brown black yellow next to C3 NOTE Save the extra wires nipped away from C3 R6 and similar parts You will use them to make jumper wires 5 Notice that Q2 the 2SC2498 transistor is instal...

Страница 11: ...ts the antenna jack J1 and the receiver jack J2 directly together when in the turned off position Solder all six points of the switch 20 Install receiver jack J2 Solder all four points of the jack 21...

Страница 12: ...nice about the AA7 is that using it is simple enjoyable and immediate We have two suggestions that will increase your enjoyment of the AA7 right from the beginning 1 Prepare a reliable coaxial cable w...

Страница 13: ...current limiting resistor of about 1K ohm to the closest PC board ground point Note This can be locations such as the black wire of the battery the mounting case of either jack but it CANNOT be the an...

Страница 14: ...hs of the other units resulted in increased signal strength It becomes a question of how much you wish to pay for the shortest possible indoor antenna The AA7 s competition performs well but we are su...

Страница 15: ...g part problem If you re missing five 10K ohm resistors and received five extra 1K resistors you can pretty much be assured that the 1K ohm resistors are actually the missing 10 K parts Hum m m I gues...

Страница 16: ...00 Ramsey Publication No MAA7 Assembly and Instruction manual for RAMSEY MODEL NO AA7 ACTIVE ANTENNA KIT REQUIRED TOOLS Soldering Iron WLC100 Thin Rosin Core Solder RTS12 Needle Nose Pliers MPP4 or R...

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