RA1ASC писал(а):
...Олег найди лутче где продаются недорогие антенны анализаторы - народ оторвет с руками и пользы будет больше .
Что-то не отрывал никто когда предлагал...
Тебе нужен анализатор - пиши, звони - найдем без вопросов....
RA1ASC писал(а):
Такие антенны описаны еще у Ротхамеля но не у радиолюбителей не у военных развитие не получили , всплывающий интерес к таким штукам можно обьеснить легкостью изготовления (пара бытылок от пепсиколы ,моток проволоки и несколько жестянок ))
Но к сожелению работают они только когда есть хорошее прохождение но в такие моменты связатся можно и на кусок провода
Ты сам пробовал?
Почему мнение форумчан с русского форума ставится поперек отзывам на eham.net ?
Они, конечно тупорылые, а мы умные, но давай почитаем -
(какие разные люди)
K4DJL
The Isotron antenna's take conventional thinking and throws it out the window. I have the 80m and 40m combo up @ 25' on a push-up pole. I constantly take to other's all over the U.S. Mr. Bilal has been very helpful with assisting me over the phone. The antenna's work, I am pleased with the performance, and my XYL is happy.
I will update for the 10m, 15m, qnd 20m later after I get the time to put them up.
WB7TVS
The Isotron 160c has worked well for me the past couple of years. Took awhile to put together, but once up it has allow me to work the Top Band from a home with a postage stamp sized lot. Four to five hundred miles is pretty common. I've also worked a few stations over 1K miles. You do have to have a good antenna turner and will need to re-turn even if you move only a few Khz. Doesn't work like a full wave dipole, but when you don't have 252 feet to work with, the Isotron will get you on the air.
When I tell contacts that I'm using a Isotron, I often get "Those don't work," which is a bit silly when I'm talking to them on it.
W4CMM
I have the 10M, 15M, and 20M Isotrons connected on one mast at 20ft. They do work, but were very hard to tune. My QTH is Florida. I have QSLs with them from Canada to Mexico to California to South America to Africa to the Carribean and one to Italy. I assume a dipole would give similar (maybe better) results, but I have no room for it. I do have a SteppIR on order, which will retire these Isotrons.
They take up very little space. If you cannot put up a dipole or better, try one of these. I intend to buy 80M and 160M Isotrons soon, since I have no room for directional antennas on these bands, and no room for any dipoles.
И наконец основная идея сего поста для тех, кто так и не понял к чему я все это затеял -
K5TER
Isotrons do what they are advertised to do. I bought used 80, 40 and 20 meter Isotrons and had no problem tuning any of them to very low SWR.
Do they outperform my 80-10 WINDOM which is at roughly the same height? No. But I don't think they are intended to do so. One wouldn't expect a hamstick to outperform the Windom either.
I think the Isotron is an excellent option for anyone who has limited space and/or needs to have a stealth installation. They can pass as TV antennas to the non-ham.
Have room for a dipole, windom or beam? Go with that. Have limited space, deed restrictions or need portability? Try an Isotron.
Чего тут не понятного?