Dual Band Collinear Antenna

50 - Collinear Trap Antenna. It was a collinear dual band J Pole that would cover 2 meters and 440mhz.

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The co-linear will have some areas that are poor in comparison but much.

Dual band collinear antenna. Broadly speaking the discone will provide a general level of receive over the entire range but depending on length and quality of co-ax you may need a dreaded pre-amp. VHFUHF 144440 DUAL Band Collinear Base Antenna Uvs300 - 12540. Ham Antenna Blog Vertical Antenna For The 144 146 Mhz Range With 5 6 Db Gain.

We fabricated two identical J-Poles using the dimensions in this document and both of them performed quite well with a resonant frequency toward the lower end of the 2-meter Amateur band and a VSWR of 151 or better over the entire band. The configuration provides a dual band antenna operating in. X 50 N X 50 X50 Dual Band Collinear Antenna Aerial 144 440 Pmr 446 Pmr446 Buy Online In Botswana At Desertcart Productid 66461288.

The 2 - 440 Collinear vertical in this project is simple to build and expand semi rigid self supporting water tight electrically sound and a professional appearance when completed. Homemade HDTV Antenna Awesome Stealth Hawk Antenna. This is an introduction to a high gain VHFUHF vertical collinear antenna program and project that can be an asset to many of you that are looking for more gain in a vertical antenna for base or repeater use.

Collinear antenna building by Karl Shoemaker. Don Murray W9VE Building a Dual-Band Antenna Mentorfest 102304 16 An Even Better J-Pole - Electrically The gain is about 74 dBi. I was able to tune the antenna in UHF by moving these sleeves and got a very good match in the 70cm band withouth affecting the 2M match.

Wide frequency coverage of 145-162 MHz 445-469 MHz SWR 21 or less. An added bonus is an extremely low angle of radiation. A collinear dual dipole antenna is split into two sections which are connected by a central conductor extending in spaced parallel relation within hollow support mast sections and forming an effective transmission line providing RF continuity at a high band frequency f and discontinuity at a low band frequency 12 f.

55 - Multiband Z Antenna. This value is about 23-24 dB higher than the average gain of a single-radiator J-pole. 51 - Short Dipole Antenna for 40m - 80m - 160m.

High Gain Collinear Ais 162mhz Receiving Aerial. Dual-band VHFUHF fiberglass antenna for base station operation. A collinear dual dipole antenna is split into two sections which are connected by a central conductor extending in spaced parallel relation within hollow support mast sections and forming an effective transmission line providing RF continuity at a high band frequency f and discontinuity at a low band frequency 12 f.

Homemade Full Wave Dual Band Antenna for 2 meter and 70 CMs. After cleaning it up and testing it I installed it on the side of my house on top of a straight pole. Discone SE1300 or X-300N 2M70CM DUAL BAND COLLINEAR ANT.

49 - Double Windom for 9 Bands. By 26CAB40 05 Aug 2012 1644. This page documents a build of a 2-element 12 wave collinear J-Pole performed by Harry KC9EOT and myself KB8OJH.

This easy to build dual band VHFUHF antenna makes a great project for the new ham that is ready to get on the 2 meter and 70 centimeter amateur radio bands. Homiebrew Base Loaded Mobile HF Antenna 6 thru 80 meters. Simple installation with a 60 inch single section fiberglass design UHF antenna connector and all stainless steel mounting hardware included.

This antenna promises 6dBd of gain in 70cm and 3dBd in 2M. Wire Antennas For Ham Radio Raynet Hf Technical Team Portable Antennas Collinear Antenna Col17 J Pole Antenna Wikipedia. The collinear antenna is designed to be mounted vertically.

The conduit radome provides a robust and sturdy enclosure for the antenna and if required it can be mounted outside in the weather. Homemade MAG loop for 7-10-14 mhz. From the condition it looked like it had been installed outdoors for a few years so I got it at a good price.

They do work though for UHF frequencies. 52 - Center Fed-Zepp Antenna for 80m - 40m. 57 - Five-Bands No-Tuner Antenna.

Indeed although many folks like to. 53 - All-Bands Antenna. A few years ago I bought a secondhand Diamond X50 dual band 144430 antenna at a radio car boot sale.

First look at my drawing below and decide how long an antenna you want to have up approximately. A collinear or co-linear antenna is an array of dipoles mounted in such a manner that every element of each antenna is in an extension with respect to its long axis of its counterparts in the other antennas in the array. Experimental Dual Band High Gain Flower Pot Antenna Vk2zoi Dipole Antenna Transmission1 Collinear.

The WB3AYW MULTIELEMENT COLLINEAR ANTENNA. This page is the first part of my VHF Collinear antenna project wich gives a gain of about 51 DBi with 2 dipoles and 81 DBi with 4 dipoles Omni directional. 58 - Dualband Full-wave Loop Antenna for 80m-40m.

Ant150f6 Series Omnidirectional Collinear Antenna 138 175 Mhz. If mounting it outside be sure to wrap the N-connector appropriately in self-amalgamating tape to prevent any moisture ingress. A vertical dipole-style antenna operable over a wide range of predetermined frequencies that is made up of two collinear dipole antennas fed either in parallel through a single input connector or individually through two input connectors contained within the same enclosure where one dipole covers the VHF portion of the band from 30 MHz to 115 MHz and the other dipole covers the.

Aztech Communications Dipole Antenna Transmission1 Butternut 2mcv 2 Meters Collinear Antenna Hardsoft Products. 54 - All-Bands Dipole Antenna. 56 - Multiband Dipole Antenna.

The design would theoretically provide an impressive 9db gain a claim that has generated some debate online over the discone antenna I was using at the time. Approximately 38 at lowest frequency Electrical Specifications Mechanical Specifications 2dB 5dB Dual Band Collinear Antennas These antennas offer VHF and UHF dual band coverage with 2dB gain at VHF and 5dB gain at UHF frequencies. Homemade dual band half wave flower pot antenna.

The Dual Band J-pole antenna 6Mtr and 2Mtr bands constructed and used at my previous residence in Melbourne Victoria from 2001 - 2007 Due to space limitations and the need to keep the visual pollution of too many antennae to a minimum I required antennae that are able to cover multiple bands. The antennas feature a tapped coil design to maximize bandwidth. He described it as a 3 element J Pole with 2 phased elements.

Moving them up and down makes the UHF resonance and SWR move.

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