ANTENTOP- 01- 2013 # 017

Two Broadband Antennas for the 145- MHz Band

The publication is devoted to the memory of UR0GT.

Credit Line: Forum from:

www.cqham.ru

By: Nikolay Kudryavchenko, UR0GT

Below are described two broadband antennas for the 145- MHz. The antennas have low SWR at all 145- MHz Band also those ones are covered nearest parts of the frequencies to the 145- MHz Band. The antennas are easy to make and easy to tune.

Figure 1 shows design of the Crest Antenna for 145- MHz. The antenna has low SWR (less the 2.0:1.0) in the frequencies range from 135 up to 152- MHz. Figure 2 shows the impedance of the antenna in the working range. Figure 3 shows the SWR of the antenna. Figure 4 shows the DD of the antenna.

Figure 5 shows design of the Twin Delta Antenna for 145- MHz. The antenna has low SWR (less the 2.0:1.0) in the frequencies range from 139 up to 150- MHz. Figure 6 shows the impedance of the antenna in the working range. Figure 7 shows the SWR of the antenna. Figure 8 shows the DD of the antenna.

The MMANA models of the Crest and Twin Delta Antenna may be loaded:

http: // www.antentop.org/017/ur0gt_145_017.htm

Figure 1 Design of the Crest Antenna for 145- MHz

Figure 5 Design of the Twin Delta Antenna for 145- MHz

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