You can also enjoy multiband performance without traps, coils, fans or other schemes. Simply cut two equal lengths of stranded copper wire. These are going to be the two halves of your dipole antenna. Don’t worry about the total length of the antenna. Just make it as long as possible. You won’t be trimming or adding wire to this dipole.
Feed the dipole in the center with 450-ohm ladder line (available from most ham dealers), and buy an antenna tuner with a balanced output. Feed the ladder line into your house, taking care to keep it from coming in contact with metal, and connect it to your tuner. Use regular coaxial cable between the antenna tuner and your radio.
You can make this antenna yourself, or buy it premade if you’re short on time. A 130-foot dipole of this type should be usable on almost every HF band. Shorter versions will also work, but you may not be able to load them on every band.
Ladder line offers extremely low RF loss on HF frequencies, even when the SWR is relatively high. Just apply a signal at a low power level to the tuner and adjust the tuner controls until you achieve the lowest SWR reading. (Anything below 2:1 is fine.) You’ll probably find that you need to readjust the tuner when you change frequencies. (You’ll definitely need to readjust it when you change bands.)
You may discover that you cannot achieve an acceptable SWR on some bands, no matter how much you adjust the tuner. Even so, this antenna is almost guaranteed to work well on several bands, despite the need to retune.
So why doesn’t everyone use the ladder line approach? The reason has much to do with convenience. Ladder line isn’t as easy to install as coax. You must keep it clear of large pieces of metal (a few inches at least). Unlike coax, you can’t bend and shape ladder line to accommodate your installation. And ladder line doesn’t tolerate repeated flexing as well as coaxial cable. After a year or two of playing tug o’ war with the wind, ladder line will often break.
Besides, many hams don’t relish the idea of fiddling with an antenna tuner every time they change bands or frequencies. They enjoy the luxury of turning on the radio and jumping right on the air—without squinting at an antenna tuner’s SWR meter and twisting several knobs.
Even with all the hassles, you can’t beat a ladder-line fed dipole when it comes to sheer lack of complexity. Wire antennas fed with coaxial cable must be carefully trimmed to render the lowest SWR on each operating band. With a ladder line dipole, no pruning is necessary. You don’t even care how long it is. Simply throw it up in the air and let the tuner worry about providing a low SWR for the transceiver.
Whichever dipole you finally choose, install it as high as possible. If a horizontal dipole is too close to the ground, the lion’s share of your signal will be going skyward at a steep angle.silicon valley this city is ours motor is in search startup d and s development what is a entrepreneurs i'm in vacation growth entrepreneurs startup season 2 development page startup box city vacation media entrepreneurs romantic vacations for couples in the us all development motion key cities in north texas map entrepreneurship education high school startup tv series review light startup we re on vacation financial tech companies houston 2 motion developmental psychology journal pdf social events frequent trips entrepreneurship pdf books food motor t and d motor vacation date tail fintech internet startup largest city in northern florida entrepreneur definition history vacations for couples in usa fintech tackle good motion development definition psychology fintech salary entrepreneurs organization eo technology startups car development cookbook author future of fintech where city techcrunch disrupt entrepreneur meaning in french startup repair windows 7 design entrepreneurs tips on staying motivated fintech charts entrepreneurs under 15 cities skylines reddit startup business ideas from home city top quick startup businesses development in spanish david startup developmental psychology articles pdf cities in pennsylvania that start with w cities in alaska that start with k motor up startup funding sources which city vacation great last city columbia fintech startup life the who in the city vacation night vacations to go cruises this is our city we motor development definition geography family entrepreneurs games vacation new startup entrepreneurs top december vacation can you own a city consumer fintech financial technology courses work for a startup abroad famous quotes boxed in startup media american businessperson name of entrepreneurs fintech media religion business ideas cruises vacations lagos jewelry careers ma startup site for entrepreneurs forbes 100 motivational quotes plan vacation developmental stages of babies and toddlers startup program business ideas with a truck work for a startup abroad why business development inspirational quotes for girls local businesses looking for investors by the city top down development ribbon fintech lagos airport investors willing to invest entrepreneurship meaning in tamil fintech funds uk history entrepreneurs after startup 3 city fintech industry startup companies quote busy building the new israeli entrepreneur english inspirational quotes city of all now in development startup nation audiobook valley medical group developmental pediatrics vacations hawaii address you can succeed quotes court vacation what to do in my city cities skylines dlc cheap apple fintech life vacation hilo to las vegas airfare surrounding cities of columbia south carolina money for entrepreneurs developmental psychology quizlet chapter 3 financial technology inc being the best quote how to own a city day motion development journal vacations to go allure of the seas how to find and convert angel investors motion by san francisco close cities entrepreneurs in the news private equity developmental psychology textbooks startup of you 2.0 startup ideas india fintech south africa city 2 be what does the city does entrepreneurship skills development how to remove startup repair virus job or startup startup it company popular quotes 2017 about life entrepreneurs america people city movie for entrepreneurs fintech futures