User manual RAMSEY AA7

[. . . ] ALL BAND HF, VHF, UHF ACTIVE ANTENNA Ramsey Electronics Model No. Don't want to string any more wires?This ACTIVE ANTENNA KIT gives you roof-top performance on a desk top!· · · · · · · · · · · · Great for perking up scanner reception. [. . . ] We'll wire the VHF circuit path first, because it's a little easier. Install C4, the polarized electrolytic capacitor. Electrolytic capacitors have polarity and must be installed properly. The negative side of the capacitor is marked with a black stripe with negative sides. The PC board or the parts layout diagram will show the correctly labeled (+) sign next to the positive hole. Install S2, which controls DC power and also connects the antenna jack, J1, and the receiver jack, J2, directly together when in the turned "off" position. Install the battery snap connector (WITHOUT the battery for now, please). Make sure the positive (red) and negative (black) wires are connected in the correct holes. This PC board follows the accepted standard that the red wire denotes the positive hole (+) and the black wire denotes the negative (-) hole. Install the battery hold-down clamp using a scrap component lead wire placed through the two holes in the clamp and into the PC-board holes. Pull the wire tight and then solder it firmly to the two PC-board points and to the clamp itself (on the top side of the PC board. ) Be sure not to use too much solder on the clamp as it may keep the battery from sitting flat and securely in the clamp. Using the mounting screw supplied, attach the whip antenna to its position on the PC-board. The whip antenna should point up from the component (top) side with the screw inserted through the bottom. Tighten it firmly to ensure a good electrical connection, don't force it so hard that you break it or the PC board and it's delicate traces. You may wish to lightly sand the plating from the screw head and solder it to the PC-Board. AA7 · 11 24. BEFORE connecting battery or conducting any tests, PLEASE recheck each of the preceding steps, looking especially for: · · · · · quality of solder connections correct orientation of Q1 and Q2 correct orientation of the electrolytic C4 correct battery wire polarity correct values for resistors and capacitors INITIAL TESTS No adjustments or alignment is required. See the following section about preparing a reliable and convenient cable for the AA7 and your receiver as well as an optional add-on antenna. Testing the AA7 consists of turning it on, using it and checking that all its described features are operational. You will need to become accustomed to the signal strength in the highest range of the gain control. If you experience any problem, consult the Trouble-Shooting Hints section of this book. USING YOUR AA7 For some of our kits, this "USING. . . . " section becomes the longest part of the book, depending on the possible applications of the kit product. What is very nice about the AA7 is that using it is simple, enjoyable and immediate. [. . . ] Often times, common sense will solve a mysterious missing 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 guess the 'red' band really does look orange!") Ramsey Electronics project kits are packed with pride in the USA. If you believe we packed an incorrect part or omitted a part clearly indicated in your assembly manual as supplied with the basic kit by Ramsey, please write or call us with information on the part you need and proof of kit purchase. FACTORY REPAIR OF ASSEMBLED KITS: To qualify for Ramsey Electronics factory repair, kits MUST: 1. [. . . ]