Grazioli g max vertical antenna cb

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grazioli g max antenna vertical terrace cb. {

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The Grazioli "G-MAX" is a vertical antenna of the high profit hull plane, which can be used both for the CB band at 27 MHz and for the amateur band of 10m. It can be used in the frequency range of 27 - 28.5 MHz; The desired frequency tuning is obtained by changing the length of the antenna, using the table provided. The radiator consists of two distinct sections, powered in the phase through a special aluminum coil positioned on the whisk. {

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The diet is direct and takes place in the lower part of the whisk which has a length of about 1/4λ, then through the phase correction coil, the RF signal is also feeding in the phase the upper part of about 5/8λ length. {

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The result is that the entire stylus of about 10.3 m radiates in the phase with a gain of almost 6 DBI and a very low radiation angle (typical of about 8 °). {

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To obtain the desired "gorund plane" effect, 4 robust radial radials were used in quarter wave 2.7 m. {

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built on the basis of the mechanics of the tested FE10V, this antenna has exceptional, comparable or better performance of a 2-element YAGI, but with the advantage that the G-MAX is omnidirectional and must not fear the comparison with any other vertical antenna on the market, whether it is of type 5/8, j-pole or other. {

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The details also show that the manufacturer is beating new roads instead of relying on standard solutions: for example, the antenna connector is not a standard SO239 clover, such as that used by most manufacturers, but a component developed and produced by Grazioli herself.This reliable connector has a real characteristic impedance of 50 ohm and is designed for frequencies up to 500 MHz, enduring high levels of RF power.

The housing is made of nickel-plated brass CW614N, while the PIN is plated in 24 carat gold to avoid oxidation and is equipped with oxidation and is equipped with oxidation and is equipped An insulator in Ptfe who maintains his centering and elasticity to avoid the loss of contact.

The entire group is protected by a special elastomer sheath that prevents the entry of water and humidity.

The phase correction coil

The G-Max coil is placed at the ends of the two central radiant sections. Performs three functions of extreme importance for this type of hills antennas:

1. Delaying the RF signal phase between the first 1/4 section of Lambda and the second section at 5/8 of Lambda, so that the entire radiant part (Whip) irradiates in phase.

2.  Compensate the strong capacitive reactance on the section greater than 5/8 thanks to its intrinsic inductive reactance.

3. Transfer all the power powered to the upper section without losses.

All this is possible thanks to the high "Q" factor of the coil, designed to perform all three functions mentioned.

Thanks to the supplied antibody assembly material, the antenna can be fixed to pylons of diameter between 40 and 54 mm.

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Note: G-MAX is provided with 3 fixing terminals. Due to the length of the antenna, it is highly recommended to fix the antenna with an adequate fixing material.

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technical data