{"id":16345,"date":"2026-03-23T15:45:00","date_gmt":"2026-03-23T04:45:00","guid":{"rendered":"https:\/\/amateurradiosupplies.com.au\/?post_type=product&#038;p=16345"},"modified":"2026-03-29T09:00:02","modified_gmt":"2026-03-28T22:00:02","slug":"sigma-se-hf-360xp-fiberglass-hf-base-vertical-antenna-1kw","status":"publish","type":"product","link":"https:\/\/amateurradiosupplies.com.au\/index.php\/product\/sigma-se-hf-360xp-fiberglass-hf-base-vertical-antenna-1kw\/","title":{"rendered":"Sigma SE HF-360XP  Fiberglass HF Base Vertical Antenna 1kW"},"content":{"rendered":"<p>Sigma SE HF-360XP:The Sigma Euro-Comm Ltd HF360 is an end fed vertical antenna, capable of allowing the user to work 80 meters through to 10 meters using an ATU. The antenna can be pole mounted at ground level or elevated depending on the user\u2019s personal requirements. The antenna is rated at 1KW* pep. The antenna comes with fixings and installation guide.<br \/>\nHow it works: The antenna is fed using 50 Ohm coax via a SO-239 socket at the base of the unit a 4:1 UNUN transformer is located in an IP65 weather sealed box at the bottom of the bracket section of the fiberglass elements. The antenna comes in four parts, three fiberglass poles and one stainless steel tapered whip. The transformer reduces the impedance at the feed point to a more acceptable level making the antenna much more efficient and allowing proper and easy tuning via an external ATU and automatic ATU\u2019s found in most modern radios.<\/p>\n<p>Specifications:<br \/>\nFrequency range: TX \/ 3.5 &#8211; 52 MHz With ATU<br \/>\nRX: 1.8 &#8211; 55 MHz<br \/>\nPower handling: 1 kW PEP or CW &amp; 200 watts max for data modes<br \/>\nType: End fed vertical<br \/>\nImpedance: 50 Ohms<br \/>\nConnector: SO-239<br \/>\nLength: 5.5 meters 18 feet<\/p>\n<p>The antenna can be grounded if the user experiences excessive local static noise, but as the UNUN is DC grounded: grounding will not affect the tuning ratios.<\/p>\n<p>BAND WITH ATU:<br \/>\n3.5 MHz 80m \/ 1.1<br \/>\n5 MHz 60m \/ 1.1<br \/>\n7 MHz 40m \/ 1.1<br \/>\n10 MHz 30m \/ 1.2<br \/>\n14 MHz 20m \/ 1.1<br \/>\n18 MHz 17m \/ 1.1<br \/>\n21 MHz 15m \/ 1.1<br \/>\n24 MHz 12m \/ 1.1<br \/>\n28 MHz 10m \/ 1.1<br \/>\n29 MHz 10m \/ 1.1<\/p>\n<p>NOTE: 1kW power rating is for intermittent amateur radio use (CW or PEP) for data modes (FT-x, RTTY, etc) or constant carrier data modes a lower maximum of 200 Watts is recommended. If you are using a high-power amplifier it is essential that an external ATU is used between the antenna and the amplifier, otherwise damage may occur.<\/p>\n<p>Measurements were made using a Yaesu (FTdx-1200) and internal ATU and a Yaesu (FT-450D) and external LDG-1200 ATU.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sigma SE HF-360XP:The Sigma Euro-Comm Ltd HF360 is an end fed vertical antenna, capable of allowing the user to work [&hellip;]<\/p>\n","protected":false},"featured_media":16368,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[32,51],"product_tag":[],"class_list":{"0":"post-16345","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-antennas","7":"product_cat-new-arrivals","9":"first","10":"instock","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product\/16345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/comments?post=16345"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/media\/16368"}],"wp:attachment":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/media?parent=16345"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_brand?post=16345"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_cat?post=16345"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_tag?post=16345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}