Description:
This is a 49:1 balun for the end-feeding antenna.
It only needs to be equipped with a vibrator of 20 meters in length, which can naturally resonate in the four amateur bands of 7, 14, 21, and 28, and the influence of the height-changing resonance point is very small.
Suitable for HAM with certain hands-on ability.
Frequency: 5-35MHZ
Standing wave: