Flower Pot Dual Band Antenna

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

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Make this distance slightly longer than the exact 58 length say 10mm as you will trim the top element to length later.

Flower pot dual band antenna. The ubiquitous Flowerpot antenna has been around since about 1993 but the origins go back to the mid 80s. From the top of the co-ax measure off an approximate 58λ distance to locate the position of the feed point. Bob VK3AIC with his recently built flower pot antenna from VK2ZOIs site.

By all reports its a beauty. Post updated 5 May 2019 scroll to the bottom for details. Dimensions shown are for a 1st build prototype from a concept drawing and have yet to be refined.

Double 58 Flower Pot Antenna. Jadi antara bahan yang diperlukan. 25mm Conduit Minimum 1metre.

Substitutes a 58 wave-length section for the top quarter wave of the basic half wave antenna design. Credits to VK2ZOI SK. At the feed point cut away the outer sheath and braid so as to form a 2-3mm gap.

Dual Band Half-Wave Flower Pot Antenna Modified half-wave Flower Pot to dual band the antenna for operation. The top hole will be approx 925mm from. GL de YC2YIZ 73.

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. I was surprised how well it worked and a few others tried it and found it worked very well. This results in the antenna operating with four half-waves in phase on 70cm and provides a theoretical antenna gain of 6dBd on 70.

A few years ago a made one of vk2zois dual band flowerpot antennas. Nylon line 500mm Al-foil. 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.

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. Basic arrangement of the 2m Half-Wave version.

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. A very neat antenna for 2 and 70. 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.

Have a look at John VK2ZOIs page for a bit of a history lesson. The single and dual band versions are cheap to make and perform well as long as you stick to the dimensions given. The VK2ZOI high gain dual-band Flowerpot Antenna.

Single 58 Flower Pot Antenna. Here is a link to his webpage with instructions for making several of his designs. Recently at the EMDRC working bee Bob VK3AIC EMDRC Committee Member created quite some interest when he brought in his latest project.

They are end fed coaxial dipoles with an interesting design to make them dual band and colinear for increased gain. With the addition of some tinfoil and sticktape it can double as a 70cm colinear. The ZOI Flowerpot is an end-fed half wave antenna for 2m made from nothing more than RG58 coax and 25mm PVC pipe.

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. Double 58 Flower Pot Antenna Extension of the Single 58 and uses a 58λ element for both the top and bottom radiators. Elsewhere in amateur radio circles this antenna is known as a 2m Flower Pot Antenna.

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. Drill two holes into the side of the conduit for the choke coil.

About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. The design is by John VK2ZOI who has excellent documentation and a step-by-step construction guide on his website here. The pole should be about 12m high minimum 11m.

Flower Pot Antenna. A few years ago a made one of VK2ZOIs dual band flowerpot antennas. Antena flower pot dual band.

The Flower Pot Antenna Iw5edi Simone Ham Radio - Antena flower pot de meia onda dual band high gain parte 1 podrobnee. Dual Band Half-Wave Flower Pot Antenna. The antenna is dual banded to operate on 70cm using the same sleeve technique as used on the dual-band basic Flower Pot.

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