Topband: 2 wire Beverage transformers

[Roger D Johnson]

Dave Blaschke wrote:
> I am attempting to learn how to construct the transformers T1, T4, 
> and T5B shown in ON4UN's manual, Table 7-35,  for a two wire 
> Beverage. The actual 2-wire Beverage is shown in Figure 7-98. Twin 
> wire impedance is 172 ohms, and the  "above ground" impedance is 545 
> ohms. Feedline coax is 75 ohms. I do not see any place in John's 
> article showing how the turns ratios shown are determined. Is there 
> an "expert" on this reflector who can give me some feedback on 
> this?  What I'm looking for is formulas to determine the said 
> transformers turns ratios.
> 
> Dave, W5UN

Take a look here, Dave

http://www.csgnetwork.com/antennaerpcalc.html

73, Roger

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