Antenna wires Winter "Choke" :-) 2018

Winter "Choke" :-) & Antenna wires


     The same antenna used on the 80-meter band.:
A) Added impedance transformer 56,25:1 impedance ratio at the lower end of the antenna wire, not at the point where feeder from the transmitter is connected. (between the 56,25:1 impedance transformer and the feeder from the transmitter is a 1:1 bifilar wound transformer 2 x 9 uH).

B) reduced wire length by 6.6 %.

     In the meantime, the results show that for an EFHW antenna with the feed point at 12 feet high input impedance (with a predominance of R) for the 80-meter band is much higher than for the other bands from  40 to 10 meters. This will be the subject of practical experiments. Among others, a transformer with a changeable transformation ratio, or alternatively switching between two separate transformers.


     Future development/research in progress to avoid the necessity of antenna wire shortening and to select the optimal components (simplicity and low costs by keeping good technical parameters )






















 "Antenna tower's" 😉