The Nautel Difference Nautel has a long history and the resources to deliver the best solution • In-house design skills: • Solid state amplifier design from 100 kHz to 100 MHz • Analog and digital communications theory • Manufacturing facilities in The United States of America and Canada • Power supplies • Data communications systems • Digital signal processing Nautel Inc. ISO9001 Registered 201 Target Industrial Circle Bangor, Maine USA 04401 • Digital hardware design Nautel has the best customer service and post-purchase support Nautel Limited ISO9001 Registered 10089 Peggy’s Cove Road Hackett’s Cove, Nova Scotia Canada B3Z 3J4 • RF matching, combining and filtering at high power and high voltages • More than 40 engineers on staff For further information, please contact us at: • Over 11,000 systems shipped • Systems installed in 177 countries • Emergency technical support is available 24 hours a day, 7 days a week. • Nautel training programs provide the support you need with product specific training programs and a RF basics training program. • A next day module exchange program is available in Canada and the US. • Nautel’s first priority is getting customers back on the air, even if the model in question was purchased in 1970. Nautel has significant technical depth and manufacturing expertise • The Vector series is wholly Nautel designed and manufactured. • Our manufacturing and design facilities are registered by International Quality System Registrars to ISO 9001:2008 • Nautel’s broad product portfolio means we have a large technical pool for product design and product support. Nautel installed Beacon transmitters • Design, manufacture and support of high power, high reliability Radio Frequency (“RF”) systems: • Medium wave AM & FM broadcast transmitters (analog & digital) • Navigational radio beacons • Differential Global Positioning System (DGPS) transmitters • Medium Frequency (MF) Navtex Communications • High Frequency (HF) Amplifiers for industrial RF applications • Next Generation LORAN (Long Range Navigation) and Data Capable Low Frequency (LF) PNT transmitters • VHF FM Weather Radio Transmitters Navigation Products available from Nautel Low, medium and high power non–directional radio beacon and DGPS transmitters Online access to Nautel’s restricted NUG (Nautel Users Group) website: Unlock a world of information. Join the NUG. Membership in the Nautel Users Group is an excellent way to receive technical content, education and information on the Nautel platforms, products, and technologies that you are interested in. • Technical FAQs LF/MF transmitting antennas including heli-deck, whip, self supporting mast and horizontal T • Technical manuals LF/MF automatic antenna tuning units • Field upgrade documents MF navtex transmitters for shore based installations • Special NUG discounts on select Nautel training programs Remote control/monitor units and remote control/ monitor software applications If you would like to become a NUG member you can register online by visiting our website at www.nautelnav.com/ • Information sheets Beacon monitor receiver

Nautel Vector Series T h e C h a llenges Antennas used for navigational aids are usually small and inefficient, for both practical and economic reasons. This results in the following undesirable antenna characteristics: ATU-LP Antenna Tuning Unit ATU-500SR Antenna Tuning Unit ATU loading coil resistance can cause significant system losses. ATU-HP Antenna Tuning Unit Low antenna system efficiencies are common. High ratio of reactance to resistance creates a narrow band filter effect which can attenuate the sidebands of the radiated signal. Automatic tuning of the loading coil is necessary to offset...