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To reply to Ruud, I have owned the Kiwa loop for
the last four years and would report as follows:
The loop is very well made
and a pleasure to own and operate. Its performance is very good, and in field
DXpeditions it has been set side by side with other antenna's such as a 200
meter beverage and a 50 meter inverted VEE. In most cases it is able to match
the performance of these antenna's, which is quite remarkable.
Like any antenna device, the Kiwa loop must SEE the incoming
signal; that is to say if you mount it in a room in your house, it will favour
signals that have a direct line to the window where you have mounted it.
Obviously, signals from the other side of the house will tend to be shielded
from the loop and performance will not be so good.
So you must mount the Kiwa loop near a window that will favour
a signal you want to receive.
By use of the directional capabilities of the loop and the
regenerative circuit, it is possible to zero in on very poor signals and
maximise them to a degree not possible with ordinary antenns.
As to whether it is worth the money, the answer is a definite
YES if you are a serious MW DXer.
I take my Kiwa loop on most of my DXpeditions, as it packs
well into a medium sized suitcase.
Like any antenna, it will pick up radio Rf noise, but due to
its highly directional nulling possibilities, some of the noise can be nulled
out in certain circumstances.
Also have a look at Werner Funkenhauser's excellent web page:
http://home.inforamp.net/~funk/
where you will find a very good review by top DXer Mark Connelly.
from Oom Jaapie, Johannesburg, South Africa.
Ruud Vos wrote:
"Please can users of the MW Air-Core loop antenna of KIWA report me
about their
experiences with this antenna? Posible I order the antenna, but the quality must be high, the price is not very low: 360 dollar for the antenna plus Airmail Shipping 100 dollar, so It's a lott of money for a antenna only to use between 530-1700 Khz. I life near a railway, about 50 meters, so the antenna can pick up some noise from coming by trains,I do not know If it is sensitive for this kind of noise? My T2FD and MLB1 of RF Systems are picking up some noise from the trains, but I can life with It, It's not to much. So please tell me some about your personal experiences! Thank you all for the help and the reactions!" 73! Ruud Vos Utrecht Holland. |