David wrote:
On 11 May 2006 00:47:27 -0700, "RHF"
wrote:
BT,
The Shortwave (SW) Antenna used determines the type
of Matching Transformer you will want to use with it.
http://groups.yahoo.com/group/Shortw...a/message/9436
The type of Shortwave Listening (SWL) Antenna that
you are using will help in determining the type of
Matching Transformer that you would wish to use :
Plus the Range of Frequencies that you wish to cover
with the SWL Antenna and Matching Transformer.
SINGLE (1) WIRE ANTENNAS :
For many forms of Longwire {Random Wire} Antennas
Horizontal, Inverted "L" or Sloper used for 500
kHz to 30 MHz a 9:1 Matching Transformer is often
recommended. These are single (1) Wire Antennas
that Require a Ground to complete the other half
of the Antenna-to-Ground System.
TWO (21) WIRE ANTENNAS :
For many forms of Dipole {type} Antennas : Dipole
Windom, Inverted "V" and other "Balanced" Antennas
being used for 500 kHz to 30 MHz a 4:1 Matching
Transformer is often recommended. These are Two (2)
Wire Antennas that do not require a Ground to complete
the other half of the Antenna-to-Ground System.
All antennas are dipoles.
Dude. Why do you run your mouth like that. Are you *absolutely* *positively*
sure that all antennas are dipoles? Tell me how my longwire antenna I use
is a dipole.
Thanks in advance!!!
- Matt