Flower Pot Dual Band Antenna

The ZOI Flowerpot is an end-fed half wave antenna for 2m made from nothing more than RG58 coax and 25mm PVC pipe. Modified half-wave Flower Pot to dual band the antenna for operation on a band that is the approximate third harmonic of the fundamental resonance.

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Substitutes a 58 wave-length section for the top quarter wave of the basic half wave antenna design.

Flower pot dual band antenna. I started acquiring specialty pvc fittings and used them to build a ham radio antenna called a two element cubical quad 10 or 11 meter beam. 25mm Conduit Minimum 1metre. Post updated 5 May 2019 scroll to the bottom for details.

Recently at the EMDRC working bee Bob VK3AIC EMDRC Committee Member created quite some interest when he brought in his latest project. Basic arrangement of the 2m Half-Wave version. By all reports its a beauty.

This resulted in an antenna with swr of about 10 on. Jadi antara bahan yang diperlukan. Video ini menjawab pertanyaan yg berulang- ulang dari penonton semoga dengan menonton ini menjadi yakin dan mantap untuk membuatnya.

A very neat antenna for 2 and 70. GL de YC2YIZ 73. The ubiquitous Flowerpot antenna has been around since about 1993 but the origins go back to the mid 80s.

The antenna is dual banded to operate on 70cm using the same sleeve technique as used on the dual-band basic Flower Pot. Single 58 Flower Pot Antenna. Nylon line 500mm Al-foil.

The design is by John VK2ZOI who has excellent documentation and a step-by-step construction guide on his website here. The top hole will be approx 925mm from. Operation on the third harmonic is achieved by using a sleeve technique so as to form quarter wave phasing sections at the higher frequency to end feed two half waves in phase at the third harmonic.

The basic half wave version of the flower pot antenna can be readily modified to dual band the antenna for operation on a band that is the approximate third harmonic of the fundamental resonance. Bob VK3AIC with his recently built flower pot antenna from VK2ZOIs site. A few years ago a made one of vk2zois dual band flowerpot antennas.

To construct the antenna first select a suitable length of grey 25mm conduit as a minimum 1m but if you make it longer you will have more room below the coil to attach to your antenna support. Dual Band Half-Wave Flower Pot Antenna Modified half-wave Flower Pot to dual band the antenna for operation. Here is a link to his webpage with instructions for making several of his designs.

Flower Pot Antenna. A few years ago a made one of VK2ZOIs dual band flowerpot antennas. Dual Band Half-Wave Flower Pot Antenna.

The single and dual band versions are cheap to make and perform well as long as you stick to the dimensions given. The Flower Pot Antenna Iw5edi Simone Ham Radio - Antena flower pot de meia onda dual band high gain parte 1 podrobnee. Half-Wave Flower Pot Antenna 2M or 2m70cm Dual Band Image 1 the Basic VHF 2M Design This is the basic 2m Half-Wave antenna using grey 25mm conduit to build a Dual Bander with 70cm capability - Continue the steps from Page 4.

I was surprised how well it worked and a few others tried it and found it worked very well. Drill two holes into the side of the conduit for the choke coil. At the feed point cut away the outer sheath and braid so as to form a 2-3mm gap.

Dimensions shown are for a 1st build prototype from a concept drawing and have yet to be refined. From the top of the co-ax measure off an approximate 58λ distance to locate the position of the feed point. This results in the antenna operating with four half-waves in phase on 70cm and provides a theoretical antenna gain of 6dBd on 70.

The pole should be about 12m high minimum 11m. The basic half wave version of the Flower Pot antenna can be readily modified to dual band the antenna for operation on a band that is the approximate third harmonic of the fundamental resonance. The basic half wave version of the flower pot antenna can be readily modified to dual band the antenna for operation on a band that is the approximate third harmonic of the fundamental resonance.

Make this distance slightly longer than the exact 58 length say 10mm as you will trim the top element to length later. Credits to VK2ZOI SK. Double 58 Flower Pot Antenna.

With the addition of some tinfoil and sticktape it can double as a 70cm colinear. A homebrew 2m 1442 MHz vertical 12 wave Coaxial Dipole antenna project for your home QTH SOTA portable field operationsWICEN exercises or the emergency 2m Go-box. Have a look at John VK2ZOIs page for a bit of a history lesson.

Elsewhere in amateur radio circles this antenna is known as a 2m Flower Pot Antenna. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. Double 58 Flower Pot Antenna Extension of the Single 58 and uses a 58λ element for both the top and bottom radiators.

Antena flower pot dual band. The VK2ZOI high gain dual-band Flowerpot Antenna. They are end fed coaxial dipoles with an interesting design to make them dual band and colinear for increased gain.

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