Page 182 of Walcott Cb sales catalog by Walcott Cb Sales Inc.

Catalogue PDF 08/2005 PURPOSE: The E30-NGP is a complete 'No ground plane" (NGP) CB antenna kit specifically designed to solve the lack of ground plane (counterpoise) problems found on vehicles constructed of plastic, fiberglass, wood or aluminum. This includes, but is not limited to, motorhomes, boats, automobiles and 18-wheeler trucks. Ground plane problems typically show up in the form of high standing wave ratio (SWR) and poor performance. The built-in counterpoise in this kit will also eliminate problems on metal base vehicles that lack the sufficient ground plane for proper operation. This could be due to the size of available ground plane (ATV, bicycle, motorcycle, wheelchair, etc.), or because the operator chooses to mount the antenna in a location that is unable too properly take advantage of available ground plane. The E30-NGP kit has an adjustable base so it can be used on vertical surfaces, horizontal surfaces or anything in-between. This is the perfect kit for motorhome roofs, the roof of a pick-up camper or cap, the trunk deck of a Corvette, or the roof of a fiberglass or aluminum 18-wheeler tractor. The installed height of the antenna, from mount surface to tip is 31.5" (80cm). COMPONENT INFORMATION: ANTENNA: The antenna used in this kit is similar in appearance to our E36 Venice base load antenna. The antenna's frequency was altered in order to maintain a desirable center band position when used with the included tuned coaxial feedline. Accordingly, the antennas may only be used with a Firestik NGP cable. The base coil has an adjustable foot that matches the base and allows the antenna to swing 90? in either direction from vertical. The angle adjustment mechanism has a thru-bolt and wing nut for easy angle adjustment. An optional security set is available which prevents the removal of the antenna without the provided key. Adjusting the SWR is as easy as loosening a pair of set screws and moving the whip upor down as required. The rated maximum wattage for the antenna in this kit is 100 watts, far more than the FCC authorized output of 4 watts for CB radios. All parts of the antenna are finished in black. COAXIAL FEEDLINE: The seventeen-foot (5.2 M) coaxial cable used in these kits is of the highest quality. As a matter of fact ... our NGP cable assembly utilizes a custom manufactured coaxial cable that can only be found at Firestik. Unable to find the performance characteristics in any of the commercially available coaxial cable ... we designed our own. First we use a multi-wire stranded center conductor to the prevent breakage that can occur with solid center conductor cable. A condition known as "cold working" occurs where vibration is present and this action can cause solid conductors to become brittle and eventually break. Surrounding the center conductor is a long life, flexible, polyethelene insulation. Since shielding is extremely critical on NGP systems, we used a double shield around the center conductor. First, a 100% aluminum tape covers the center conductor insulator and then a copper wire braid (averages 95% coverage versus the industry standard of 70%) is applied over the aluminum tape. The coaxial feedline, besides being the conduit for the signal to reach the antenna, serves as a tuned circuit that creates the necessary counterpoise. If a longer cable length is required, the user may add standard RG-58 A/U cable between the radio and system cable, preferably in lengths that are multiples of nine feet. Because it is a tuned circuit, the length cannot be reduced without causing non-repairable damage. MOUNT AND HARDWARE: The antenna can be mounted to any mount or surface that can accomodate its 1.5" (38mm) base diameter. The mounting base is designed to use the common American standard that calls for a 1/2" mounting hole. The tilt/fold-down mechanism allows the antenna to be adjusted more than 90 degrees in either direction parallel to its mounting surface. Even when angle adjustment isn't a requirement, the fold down option can be very helpful to those moving in and out of parking facilities. The base includes a rubber gasket/seal to protect against water leaks. All exposed metal parts are finished in classy, gloss black chrome. ADDITIONAL FEATURES: Each kit includes a FREE microphone hanger and comes complete with user installation documentation. 54.95 US Page 182/525

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