{"id":12303,"date":"2024-10-03T20:34:35","date_gmt":"2024-10-03T10:34:35","guid":{"rendered":"https:\/\/amateurradiosupplies.com.au\/?post_type=product&p=12303"},"modified":"2026-04-22T16:25:00","modified_gmt":"2026-04-22T06:25:00","slug":"sigma-se-hf-360-xp-fiberglass-hf-base-antenna-1kw","status":"publish","type":"product","link":"https:\/\/amateurradiosupplies.com.au\/index.php\/product\/sigma-se-hf-360-xp-fiberglass-hf-base-antenna-1kw\/","title":{"rendered":"Sigma SE HF-360 Fiberglass HF Base Vertical Antenna"},"content":{"rendered":"

NOTE: SOLD OUT ON BACK ORDER<\/strong><\/p>\n

SE-HF\/360: 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 400W PEP. The antenna comes with fixings and installation guide. How 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. 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

Specifications:
\nType: End fed vertical
\nFrequency: TX \/ 3.5 \u2013 30 MHz, RX \/ 1.8 \u2013 55 MHz (with ATU)
\nPower rated: 400W PEP or CW & 200 Watts max for data modes
\nImpedance: 50 Ohms
\nConnector: SO-239
\nLength: 5.5 metres
\nWeight:\t3 kg<\/p>\n

SWR DECLARED:
\nBAND \/ ATU
\n80 m \/ 1:3.1 (Manual ATU)
\n60 m \/ 1:1
\n40 m \/ 1:1
\n30 m \/ 1:1
\n20 m \/ 1:1
\n17 m \/ 1:1 (Manual ATU)
\n15 m \/ 1:1
\n12 m \/ 1:1 (Manual ATU)
\n10 m \/ 1:1
\n6 m \/ 1:1 (Manual ATU)<\/p>\n

NOTE: FROM SIGMA EURO COMM<\/strong>
\n400W 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.
\nIf 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.
\nMeasurements were made using a Yaesu FTdx1200 and internal ATU and a Yaesu FT450D and external LDG-1200 ATU.
\nThe antennas have 4 sections (3 high-grade fiberglass sections and 1 stainless steel whip) and come complete with fixings and full installation instructions.
\nSE HF-360: FIBREGLASS VERTICAL RADIAL FREE ANTENNA 80 TO 6 METRES<\/p>\n

Assembly:
\nBefore installing the antenna, find an open space away from power and telephone lines. The antenna can be mounted at ground level or high up, offering many options for installation.
\nAssemble the fiberglass elements making sure that the spring washers are used and that the steel whip is inserted into the section plane completely and that the two grub screws are well fixed.
\nMount the antenna to the pole using U-bolts or another type of attachment
\nAt the top of the base, place the three nuts and bolts into the black molding and secure them
\nConnect the PL-259 connector of the 50 Ohm coaxial cable to the SO-239 socket on the base of the antenna where the balun is placed.
\nIt is recommended to always ground the tuning point rather than the transformer for best performance and safety.<\/p>\n","protected":false},"excerpt":{"rendered":"

NOTE: SOLD OUT ON BACK ORDER SE-HF\/360: The Sigma Euro-Comm Ltd HF360 is an end fed vertical antenna, capable of […]<\/p>\n","protected":false},"featured_media":14451,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[32],"product_tag":[],"class_list":{"0":"post-12303","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-antennas","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product\/12303","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=12303"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/media\/14451"}],"wp:attachment":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/media?parent=12303"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_brand?post=12303"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_cat?post=12303"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_tag?post=12303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}