{"product_id":"kw-e-zee-match-kw-electronics-antenna-tuning-unit-balanced-atu-2","title":"KW E-ZEE Match KW Electronics Antenna Tuning Unit Balanced ATU","description":"\u003ch1\u003eKW E-ZEE Match KW Electronics Antenna Tuning Unit ATU\u003c\/h1\u003e\n\u003cp\u003eThe KW E-ZEE Match KW Electronics Antenna Tuning Unit Balanced ATU is an almost legendary product based on the L-match circuit design. It will work 400W PEP into an open wire, 300 ohm twin fed, or even with a centre fed doublet or Windom.\u003c\/p\u003e\n\u003cp\u003eIt is in pretty good condition with surface scuffs\/scratches\/blemishes and some rusting, as seen in the attached images.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApproximate Size excluding knobs and connectors (W.H.D)\u003c\/strong\u003e:  30 cm x 12.8 cm (~5\") x 15.4 cm (~6\") \u003c\/p\u003e\n\u003cp\u003eThe KW-EZEE Match is designed for either a wire and ground connection or for a balanced feed line without the need for the losses introduced by the usual balun found in most modern matches.\u003c\/p\u003e\n\u003cp\u003eThe antenna connections are at the rear of the unit: note the centre connector of the pairs are linked to the ground terminal. This configuration is for unbalanced feeds such a simple wire and ground antenna or any coax feed. If the matcher was to be used for balanced ladder line, for example, the links would need to be removed.\u003cbr\u003e \u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e \u003cbr\u003eFrequency Range : 3.5 MHz – 30 MHz\u003cbr\u003eResistive Loads: 15 ohms – 5000 ohms\u003cbr\u003eMaximum Power: 400 Watts SSB, 100 Watts AM.\u003cbr\u003e \u003cbr\u003eAntenna connections at the rear of the unit consist of two pairs of terminals each capable of accepting banana-plugs, spade-tag or simply screw down on to a wire.\u003c\/p\u003e\n\u003cp class=\"\"\u003eThe black pair of terminals are primarily used for lower bands typically 80, 30 and 40 metres and the red pair of terminals are primarily used for upper bands, typically 20 through to 10 metres, with a centre black terminal below for the earth connections.\u003cbr\u003e \u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eOperational Tuning technique\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eReduce the transmitter power to the lowest practical value.\u003c\/li\u003e\n\u003cli\u003eAdjust 'C Shunt ' (Left knob) to produce a dip in the SWR\u003c\/li\u003e\n\u003cli\u003eAdjust 'C Source' (Right knob) to continue to lower the SWR.\u003c\/li\u003e\n\u003cli\u003eRetune to step 2\/ to continue to reduce the SWR. A perfect 1:1 match should be achievable on all HF bands subject to antenna and feed line\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"\"\u003ePlease click on the following link for more \u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/radio-equipment-accessories\" target=\"_blank\"\u003evintage radio equipment and accessories.\u003c\/a\u003e\u003cstrong class=\"\"\u003e\u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/radio-equipment-accessories\" target=\"_blank\"\u003e \u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"KW Electronics","offers":[{"title":"Default Title","offer_id":43624875589889,"sku":"","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/products\/DSC05557_b4747c43-f5d8-4229-8253-a711c9c0ffc5.jpg?v=1670425732","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/kw-e-zee-match-kw-electronics-antenna-tuning-unit-balanced-atu-2","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}