[Elecraft] Antenna Tuner versus Antenna Analizer ?
Dave KQ3T
kq3t at comcast.net
Wed Sep 10 19:40:30 EDT 2008
Hi Paul,
Just to expand slightly on this one aspect of your question.
The term "balun" is a contraction of "balanced-unbalanced". It's a
device for connecting a balanced feedline to an unbalanced one.
Most transceivers these days are designed to connect to a 50 ohm coaxial
cable (such as RG-8, RG-58, etc.). Coaxial cable is an unbalanced
feedline, since one side (the shield) is connected to ground.
Unfortunately, coaxial cable will usually have a higher loss than a
balanced feedline ("ladder line"). The purpose of a balun is to
efficiently couple the balanced feedline to the unbalanced coax that
connects to your rig.
Many hams do not use baluns. They will run coax from the rig all the way
to the feedpoint of the antenna. This is especially true when the
antenna is resonant (that is, a full half-wave on the band you're
operating). Many commercial antennas are designed for connection
directly to 50 ohm coax, without an intervening balun.
73,
Dave KQ3T
Paul Maruna wrote:
> ...Where does the "baluns" come into this play with either unit ?
>
> ...
> Thank you,
> Paul
> (73)
> KD8HWP
>
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