W0FMS Two-Wire Beverage (SWA) Transformer Calculator
JavaScript Implementation Written by Fred Spinner, W0FMS (C) Copyright 2001* Unlimited amateur radio use encouraged.

Enter Data in the following two columns, and
Click on "Calculate" to generate the Beverage Antenna data.

AWG  gauge
Height above ground  feet
Wire Spacing  inches
Minimum Frequency  MHz 
AL of Ferrite  mH/1000 turns 
Primary impedance  Ohms 


New Primary (T1) Turns 
New Primary (T2) Turns 
New End Term Primary Turns (T3) 


Zoa ==  Ohms
Zot ==  Ohms
Ratio Zot/Zoa == 
Turns Ratio Zot == 
Turns Ratio Zoa == 
Minimum Primary Inductance (T1 & T2) ==   uH
Calculated Primary Inductance (T1) ==   uH
Calculated Primary Inductance (T2) ==   uH
Minimum End Term. Primary Inductance (T3) ==   uH
Calculated End Term. Inductance (T3) ==   uH
End Term. Primary Turns (T3) ==   
Primary Turns (T1) ==   
Primary Turns (T2) ==   
Zot Secondary Turns (T1) ==   
Zoa Secondary Turns (T2) ==   
Wire diameter   Inches

*Reference: Beverage Antenna Handbook, 3rd ed. W1WCR Vic Misek
Low-Band DXing Antennas, Equipment and Techniques for DXcitement on 160, 80 and 40 Meters, ON4UN John Devoldere