ANTENTOP- 01- 2011, # 015

Vertical Open Stub Antenna for the 40 and 20- meter Band

The publication is devoted to the memory of UR0GT.

By: Nikolay Kudryavchenko, UR0GT

The antenna has enough good parameters at the 40 and 20 meter Bands. Antenna does not need any counterpoises. Antenna should place at some distance (say more the 1- meter) above the ground. To prevent radiation from the outer braid of the coaxial cable a good RF- Choke should be installed at the feeding terminals.

Figure 1 shows design of the Vertical Open Stub Antenna for the 40 and 20- meter Band.

The MMANA model of the wire antenna with resonances at 1.85 and 3.65- MHz

may be loaded: http: // www.antentop.org/015/vosa_015.htm

Credit Line: Forum from:

www.cqham.ru

Figure 2 shows Z of the Vertical Open Stub Antenna for the 40 and 20- meter Band at the 40- meter Band (3- meter above the real ground) .

Figure 1 Design of the Vertical Open Stub Antenna for the 40 and 20- meter Band

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