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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Ramsey Electronics AA7, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Ramsey Electronics AA7 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Ramsey Electronics AA7. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Ramsey Electronics AA7 should contain:
- informations concerning technical data of Ramsey Electronics AA7
- name of the manufacturer and a year of construction of the Ramsey Electronics AA7 item
- rules of operation, control and maintenance of the Ramsey Electronics AA7 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Ramsey Electronics AA7 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Ramsey Electronics AA7, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Ramsey Electronics service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Ramsey Electronics AA7.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Ramsey Electronics AA7 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
AA7 • 1 ALL BAND HF , VHF , UHF ACTIVE ANTENNA Ramsey Electronics Model No. AA 7 • Great fo r perking up s canner reception. • Dual preamp HF-VHF/UHF front panel s witching. • Circuit based on true active antenna research. • Performance rivals units costing many times more ! • Front panel RF gain contr ol. • Uses Dual Gat e MOSFET te [...]
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Page 2
AA7 • 2 PARTI A L LIST OF A V A IL ABLE KITS RA MSEY TRA NSMIT TER K IT S • FM10, FM25B FM Stereo Transmi tters • FM100 Super Pr o FM Transmitter • MR6 Mod el Rocket Tracki ng Transmitter • AM1 , AM 25 AM Tr a ns m i t te r s RAMSEY RECEIVER KITS • FR1 FM Broa dcast Receiver • A R1 A ircraft Band Receiver • SR2 Shortw ave Receiver ?[...]
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Page 3
AA7 • 3 AA7 ACTIVE ANTENNA KIT Rams ey Publication No. MAA7 Manual Price Only: $5.00 TABLE OF CONTENTS Introduction to the AA7 .................... ................. ........ 4 Circuit and Device Description ....................... ........... 4 Active Antennas: Circuits W ith a Purpose . ............... 5 Parts List .. .................... .....[...]
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Page 4
AA7 • 4 INTR ODU CTI ON TO THE AA7 We believe that you will discover and ag ree with us that your new AA7 is the best VALUE in a true re ceiver antenna. In its s implest form, an “act ive antenna” is a small ante nna going throug h an RF pr eamplifier to a receiver. Generall y , the ac tual ant enna ma y be of several diff erent styles: • b[...]
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Page 5
AA7 • 5 The dual-g ate MOSFET amp lifier circuit (Q 1), selected with S1 in the “o ut” position is designated the HF preamp circuit, due to the exce ptionally low noise level of its operation. This is ideal for enhan cing weak C W -SSB signals. This amplif ier perform s the true “a ctive antenna” fu nction of the AA7. The 2SC2 498 amplifi[...]
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Page 6
AA7 • 6 figure of the amplifier circ uit which amplifies the signal from the ante nna rod before it gets to th e receiver's RF input. We mention these things, with no need to get into a lot of engineering detail, just to let you know that "Active Antennas" are a serious topic a mong contemporary re ceiver designers, and that w e di[...]
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Page 7
AA7 • 7 Needle Nose Pliers (RS64-1844) Small Diagonal Cutters (RS64-1845) ADDITIONAL SUGGESTED IT EMS Soldering Iron Holder/Cleaner (RS-64-2078) Holder f or PC Board/P arts (RS64-2094) Desoldering Braid (RS-2090) ASSEMBLY INSTRUCTIONS The f ollowing assembly step s are given in ac cord with the LEARN-AS- YOU-BUILD philosophy f[...]
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Page 8
AA7 • 8[...]
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Page 9
AA7 • 9 AA 7 PA RTS LAYO UT D IAG RAM[...]
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Page 10
AA7 • 10 • SOLDER ALL wires or pins of the part, whether the 2 wires of a resistor or the 3 or 4 wires of a transistor. • Trim or Nip all excess wires extending beyond each solder connection, taking care that wire trimm ings do not beco me lodged in PC-board solder connections. Soldering the AA7 Printed Circuit Board 1. Install J1, the RF[...]
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Page 11
AA7 • 11 14. Install R3, 100K [brown-black-yellow]. 15. If you have co mpleted Steps 4 through 14 correctly, you now have the 4 holes for Q1 surrounded by other parts, mak ing it easy to find! Examin e Q1, the dual-ga te MOSFET. The sch ematic diagram shows why it has 4 leads. Insert Q1 so that the square tab is pointing directly at JMP2,[...]
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Page 12
AA7 • 12 24. BEFORE connecting battery or conducting any tests, PLEASE recheck each of the pr eceding steps, looking es pecially for: • quality of solder conne ctions • correct orientation of Q1 and Q2 • correct orientation of the electrolytic C4 • correct battery wire polarit y • correct values f or resi stors and ca pacitors INITI[...]
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Page 13
AA7 • 13 rather than only a re ceive r or scanner, make sure it is not possible to transmit by accidentally pressing a mike button or CW keyer. Transmitted RF into the AA7 is likely to ruin on e o r both of the transistors. Transisto r Placement Information: Both transistors may be ordered from Ramsey Electronics, but they also may be found at a [...]
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Page 14
AA7 • 14 Unusual oscillations in receiver: So me portable receivers not enclosed in metal cases may break into oscilla tion wh en conne cted to any RF preamplifier. Try reducing the AA7 gain control and make sure good grounds are on the interconnecting coax cables. Receiver overload ing, heterodynes, images: A preamplifier will intensify any prob[...]
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Page 15
AA7 • 15 The Ramsey Kit W arranty Please read c arefully BEFORE call ing or writi ng in abo ut your kit. M ost pro blems can be solved without contacting the facto ry. Notice that thi s is not a "fin e print" warranty. We want you to u nderstan d your rights a nd ours to o! All Ramsey kits w ill work if assemble d properly. The very fac[...]
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Page 16
AA7 • 16 AA7 AC TIV E AN TENN A Quick Reference Page Guide Introduction to the AA7 ................ .................... . 4 Circuit and Device Description ............ .............. 4 Active Antennas: Circuit s With a Purpose . ....... 5 Schematic Diagram .................. .................... .... 6 Parts Layout Diagram ..... ................[...]