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KV340-CONTEST

 

YAGI-UDA DIRECTIONAL ANTENNA 3 ELEMENTS, 40 METERS, 85% SIZE, HIGH PERFORMANCE

The KV340-CONTEST (3-element Yagi for the 40-meter band, 85% size) is KV ANTENAS' most robust design to date for the 40-meter band. The antenna belongs to the full-size antenna category due to its slight shortening of only 15%. The idea behind this slight shortening is mainly to mitigate the risk of damage caused by weather conditions (winds, storms, heavy rain, etc.) since the antenna has much less wind drag and is lighter and cheaper than a full-size antenna, but without losing robustness or performance. Each antenna feature is treated in great detail, such as: construction and mechanical strength calculations, performance, simulations and modeling via software, high-power capacity, choice of high-quality and resistant materials, long service life, upgradeability, practical tests, etc.

 

The antenna is mainly intended for DX and Contest stations. Target audience that understands that every detail makes a difference when seeking results, whether to obtain a good placement in competitions or hunt for an important DXCC.

 

Main Features:

  • 3” square tube gondola with steel cable truss;

  • Central plate with 6mm thick aluminum sheet and U clamps for fixing to masts up to 2.1/2” inches;

  • Elements with round aluminum tubes, the largest diameter being 38mm;

  • Aluminum profiles with UV-resistant STAUFF polypropylene clamps to fix the elements to the gondola;

  • Two-layer guying system for elements with high UV resistance polyamide ropes.

  • High Q coils;

  • Stainless steel screws;

  • Can be dismantled into pieces of up to 2 meters to enable low-cost transportation;

  • Possibility of installation in the middle of the tower (with or without elevator).

COILS:

The calculation and construction of the coils was one of the main points of attention in the antenna design, since it is only possible to obtain a high-performance shortened antenna with well-built coils and quality wires. In our antennas, we use enameled wire with a gauge of 8mm² and a good ratio between the length and diameter of the coils. These characteristics allow the coils to present very low losses and support high power. In addition, the coils were calculated to dispense with the use of "capacitive radials", which facilitates assembly and installation.

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TECHNICAL SPECIFICATIONS:

Gain: 5.88 dBi

Bandwidth (SWR < 1.8:1): 300 Khz

Max. Power: 3KW PEP

Impedance: 50ohms

Element: 16.10m

Turning Radius: 8.10m

Approximate weight: 9kg

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SWR CURVE:

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COMMERCIAL CONDITIONS:

Price: R$ 1,709.00 (payable in cash via Pix)

Other payment methods:

1) Deposit of R$900.00 for ordering and R$900.00 for shipping

2) 12x R$ 191.98 on credit card

NOTE .1: Shipping at the buyer's expense

OBS.2: Check delivery time

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