Tzikas Tzik wrote:
"> hi. thank you for
your answer. What elevation angle has the 5/16 inverted
> L
> and what elevation angle has the 1/4? Must i will reduce the total
lenght
> from 5/16 to 1/4 for higher local signal or the
difference is just a
> little
> bit, and to keep the
5/16 inverted L? If i keep the 5/16 inverted L what i
> must
change to increase the signal? Now i am using 6 radials (4 1/8 and 2
> 1/4).which are constructed with insulated wire and are placed on
the
> ground.
>
> Moreover, what do you think
about T antenna?
> My transmitting area is like this draw:
> http://tzitzikas.webs.com/transmitter_area.JPG
> In the
front of transmitter's house, there is a third building with 6
>
floors. So, the vertical portion of my antenna is found between 3
> buildings.
> I think it is a problem for the signal
transmittion. What do you propose?
> Now, for match system with
my 50ohm transmitter, i am using a variable
> series capacitor
(0-500pf).
----- snip ----
Hi All,
I agree
with Guy and others that the radiation angle changes so little as to not
be a problem.
Looking at your PDF diagram, I would suggest you
should add as many more radials 20m or longer each as you can install on
top of the middle building to enhance radiation and lower ground
losses. That may lower your feed point inpedance to
below 50 ohms. But in that we will help you deal with it
then.
Good luck OM 73 to all
George K8GG
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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