Basic Theory Still the Same…
Since we have two articles in this issue about baluns (Guanella and Bramham), and KL7AJ is writing about pi networks in his “Analog Adventures” column this month, we thought it would be appropriate to reprise CQ‘s first-ever article about baluns from way back in the February 1952 issue. The basic theory hasn’t changed in the past 70 years!
If you like your theory in short, mild doses—try this one. The author presents a very readable account of the “balun” with a discussion of its uses and applications in the ham field—Editor.
In the reduction of TVI, it has been found that the coupler tank circuit and networks help to attenuate harmonics of the carrier frequency. The coupler can be built for balanced output using twice the usual number of components which network and employ a device such as the “balun” to work into a balanced transmission line or antenna. The term “balun” is a contraction of the words balanced to unbalanced transformer.
