{"id":16759,"date":"2026-06-17T09:22:16","date_gmt":"2026-06-16T23:22:16","guid":{"rendered":"https:\/\/amateurradiosupplies.com.au\/?post_type=product&#038;p=16759"},"modified":"2026-06-17T09:47:13","modified_gmt":"2026-06-16T23:47:13","slug":"diamond-x-510mh-2-70cm-base-vertical-antenna","status":"publish","type":"product","link":"https:\/\/amateurradiosupplies.com.au\/index.php\/product\/diamond-x-510mh-2-70cm-base-vertical-antenna\/","title":{"rendered":"Diamond X-510MH 2\/70cm Base Vertical Antenna 350W"},"content":{"rendered":"<p><strong>ITEM PRICES ON SHIPPING ARRIVALS<\/strong><\/p>\n<p>X-510MH: The Diamond X-510MH is a high performance, heavy-duty dual-band fiberglass vertical antenna designed for 2m (144 MHz) and 70cm (430 MHz) amateur radio bands. Known for its exceptional reach, it is favored by fixed base stations for reliable VHF\/UHF operations and repeater work.<\/p>\n<p>Features:<br \/>\nFiberglass Construction: Fully weatherproofed, making it highly durable against harsh environmental conditions like ice, rain, and strong winds.<br \/>\nPre-Tuned: Requires no physical cutting or tuning prior to installation.<br \/>\nIncluded Radials: Comes with 3 radials (approx. 52 cm long) to achieve proper ground planes and VSWR (less than 1.5:1)<\/p>\n<p>Installation:<br \/>\nMounting Height: Because of its height, mounting it higher up significantly improves VHF\/UHF propagation and line-of-sight range<br \/>\nMast Size: It mounts easily on masts ranging from 30 mm to 60 mm in diameter using the included brackets.<br \/>\nSealing: Many amateur radio operators in forum discussions suggest sealing the antenna&#8217;s threaded joints with silicone to prevent long term moisture ingress<\/p>\n<p>Specifications:<br \/>\nFrequency: 144\/430 Mhz<br \/>\nGain: 8.3dBi (144MHz) and 11.7dBi (430MHz)<br \/>\nMaximum power: 350W<br \/>\nRadial length 52cm<br \/>\nImpedance: 50 Ohms<br \/>\nVSWR: Less than 1.5:1<br \/>\nAccepted mast diameter: 30mm to 60mm<br \/>\nType: 3&#215;5 \/ 8 wave C-Load (144MHz), 8&#215;5 \/ 8 wave C-Load (430MHz), FRP outer shell<br \/>\nConnector: SO239 (UHF female)<br \/>\nLength: 5.2m<br \/>\nWeight: 2.1kg<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ITEM PRICES ON SHIPPING ARRIVALS X-510MH: The Diamond X-510MH is a high performance, heavy-duty dual-band fiberglass vertical antenna designed for [&hellip;]<\/p>\n","protected":false},"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[32,51],"product_tag":[],"class_list":["post-16759","product","type-product","status-publish","product_cat-antennas","product_cat-new-arrivals","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product\/16759","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=16759"}],"wp:attachment":[{"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/media?parent=16759"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_brand?post=16759"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_cat?post=16759"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/amateurradiosupplies.com.au\/index.php\/wp-json\/wp\/v2\/product_tag?post=16759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}