Balun???

[Dukai Zoltan]

Udv mindenkinek

Van egy szep 900MHz-es Yagi antenna rajzom komplett meretezessel, mindennel.
De a Balun trafo nem igazan erthetoen van megadva..
Ezt irja rola, a meretezeserol a cikk :

There are many ways to
construct a combined balun and
impedance converter, but none of
them meet one of the most important
requirements for the antenna, which
that it be mechanically robust. A com-pact
balun, as shown in Figure 4,
appears by contrast to be ideal for this
application: it can placed inside the
boom that supports the antenna ele-ments,
and it can be easily constructed
by winding a 10 to 15 cm length of
UHF flat cable (60 .impedance; the
small difference with 75is not impor-tant)
into a coil. The way that this
balun works is easy to explain. It acts as
a choke for unbalanced currents, while
allowing balanced currents to pass
unhindered. 

Elektor 99 Aprilis...

Namost.. Mit akar ez jelenteni???
Mire tekerjem ezt a madzagot???
A hely a Balunnak 8*8*10 mm ami ki van hagyva az antenna belsejeben...
Hogy fer oda be ekkora rakas derot???

Egyebbkent: http://www.yunord.net/~dzoolee/e994022.pdf cirka 500k

Jo lenne ha valaki megszagolna es megmondana hogy ez budos e vagy en leptem kutyaszarba....

Udv...