All Band Antenna Designs - LongWire Balun

All Band Antenna Designs - LongWire Balun

: "We have designed a long wire balun that can dramatically improve the reception on any Short Wave receiver.

The tests we carried out from 500Khz to 30Mhz gave an average improvement of 4 S units, when tested with our current balun incorporated into the design we had computer and electrical interference drop by up to 10 DB....We had to run the tests a dozen times to make sure the readings were correct.

This same balun can be used for feeding an original Windom antenna against ground, 3.5 to 30 Mhz with very good results (100W) transmitter power.
By grounding the balun directly under the vertical radiator of a Windom a very low noise installation is realised.

We used a multitude of long wire lengths and had very favorable results with our balun connected.(Both receiving and transmitting)
Baluns...What is the best balun?

There are 2 types of baluns used in antenna matching networks for HF antennas, 1 is the Voltage or Ruthroth balun, the other is the Guanella or current balun.

There are others which are derived from the above namely quarter wave coaxial balun and air core baluns.

The best balun in my humble opinion is the Guanella type balun using a toroid with an initial permeability between 125 and 300."