ANTENTOP- 01- 2007, # 009

BA- Butterfly Antenna

 Figure 8 Impedance of the Antenna at Its Height 7 meters Over Real Ground

Antenna was made from bare copper wire in 4 mm diameter. May be used any 50 Ohm coax for feeding the antenna. Try place the coax athwart to antenna at least 5 meter.

References:

1. Antennas for Radio Amateurs

By Igor Grigorov, RK3ZK. Antentop -1-2007, Antentop 2- 2004

2. MMANA is free for Amateur Radio Use

http://mmhamsoft.ham-radio.ch/

http://www.antentop.org/

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