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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 |
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