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Nếu bạn đang di chuyển, cố gắng thực hiện cuộc gọi một lần mỗi năm phút hoặc lâu hơn. Hãy chắc chắn để nói với thính giả mà bạn đang đi du lịch và hướng gần đúng của bạn. Nếu bạn Giấy phép hoạt động ating đi từ khu vực nhà của bạn, thêm "di động" hay | 246 Part IV Building and Operating a Station That Works Buying New or Used Equipment New equipment is always safest for a neophyte and it has that great new radio smell too If the equipment doesn t work you have a service warranty or the customer service representatives can help you out. Sales personnel can help you with information about how to set up a radio or any accessories and may even have technical bulletins or application guides for popular activities. To find out where to buy new gear get a copy of QST CQ or WorldRadio. The major dealers all run ads every month and some are virtual catalogs. For the smaller and local stores check out the ARRL Technical Information Service s Web page at www.arrl.org tis tisfind.html. While buying new equipment is safe used gear is often an excellent bargain. Hams always love a bargain. You can find nearly any imaginable piece of gear with a little searching on a number of online swap sites including eBay. Look for these sites through the portals and reflectors listed in Chapter 3. I like to buy and sell through the ham radio Web sites my favorite is the Classified pages on the eHam.net portal www.eham.net classifieds . The ARRL and QRZ.com both have for-sale ads and quite a few other sites are springing up all the time. Enter ham trade or ham swap into an Internet search engine. As with shopping at hamfests get help from an experienced friend before buying. What about buying through mail order Internet and toll-free telephone numbers make shopping for rock-bottom prices easy but shopping by mail order has some drawbacks. The first is that you have to pay for shipping which could add tens of dollars to your purchase. You may also have to pay for shipping to return equipment for service. Second the local radio store is a valuable resource for you. RadioShack probably doesn t carry replacement parts for your WhizBang2000 nor does it probably have a new battery pack for that 10-Band PocketMaster. When you are stuck in the .