{"id":13018,"date":"2019-05-13T00:00:00","date_gmt":"2019-05-12T23:00:00","guid":{"rendered":"https:\/\/pihernz.com\/product\/sirio-sma-108\/"},"modified":"2026-07-13T11:33:33","modified_gmt":"2026-07-13T09:33:33","slug":"sirio-sma-108","status":"publish","type":"product","link":"https:\/\/pihernz.com\/en\/producto\/sirio-sma-108\/","title":{"rendered":"Sirio SMA 108-144 Mobile Antenna \u2013 Tunable 1\/4 Wave VHF Vehicle Whip with Adjustable Swivel Base and Wing Nut Locking Mechanism"},"content":{"rendered":"

The Sirio SMA-108 – 144 MHz<\/strong> is a professional-grade, high-integrity VHF mobile antenna precision-engineered to deliver exceptional signal propagation and reliable transmission tracking across diverse mobile fleets. Operating as a highly efficient 1\/4 wave frequency mobile antenna<\/strong>, this premium vehicle whip is an ideal infrastructure asset for commercial logistics management, public safety transport networks, and amateur radio operators requiring steady, line-of-sight voice intelligibility. Sourcing an original factory-phased Sirio radiator ensures optimal electrical performance and drops the risk of system mismatches or signal degradation common with uncertified generic alternatives.<\/p>\n

The advanced structural architecture features a specialized ball-joint swivel base layout equipped with a heavy-duty wing nut locking mechanism. This tactile design grants technical deployment teams the freedom to tilt, angle, and realign the vertical whip position seamlessly, enabling clean vertical polarization profiles even when mounted on angled vehicle surfaces, sloping fenders, or curved truck roofs. Built to handle continuous environmental exposure and severe highway wind resistance, the rugged chrome-plated body structure establishes a secure, weather-hardened mechanical seal that handles multi-shift field operations smoothly.<\/p>\n

The core radiating element utilizes a high-resilience, flexible stainless steel whip optimized to absorb physical foliage impacts without fracturing or causing torque strain on the vehicle chassis ground plane. This turnkey mobile radiator is field-tunable between its lower 108 MHz limits up to the 144 MHz band via an official cutting methodology, allowing technical crews to precision-calibrate the system’s impedance paths to a perfect resonant center point. Delivered as a complete base-and-whip hardware assembly with low insertion loss, this premium antenna provides absolute out-of-the-box readiness for your communication hardware pool.<\/p>\n

Technical Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Technical Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Brand<\/td>\nSirio Antenne<\/td>\n<\/tr>\n
Model Designation<\/td>\nSMA-108 \/ SMA 108-144 Series<\/td>\n<\/tr>\n
Antenna Classification Type<\/td>\nVHF Mobile Vehicle Antenna Whip<\/td>\n<\/tr>\n
Electrical Wave Configuration<\/td>\n1\/4 Wave frequency radiation pattern matrix (1\/4 wave)<\/td>\n<\/tr>\n
Active Operational Spectrum<\/td>\nPre-phased for 144 MHz VHF bands; field-adjustable down to 108 MHz via cutting chart<\/td>\n<\/tr>\n
Mounting Base Architecture<\/td>\nAdjustable ball-joint swivel mechanism with a quick-locking wing nut toggle<\/td>\n<\/tr>\n
System Impedance<\/td>\n50 Ohms Nominal<\/td>\n<\/tr>\n
Radiation Profile Pattern<\/td>\nOmnidirectional \/ Linear Vertical Polarization<\/td>\n<\/tr>\n
Hardware Material Composition<\/td>\nHigh-grade flexible Stainless Steel radiating whip with a Chrome-Plated Brass base structure<\/td>\n<\/tr>\n
Color Profile<\/td>\nMetallic Silver Chrome with a Black insulated rubber base collar<\/td>\n<\/tr>\n
Primary Fleet Utility Purpose<\/td>\nFleet vehicle outfitting, mobile transmission path stabilization, and radio laboratory replacement stock<\/td>\n<\/tr>\n
Package Content<\/td>\n1x Sirio SMA-108 Antenna Whip, 1x Swivel Mount Base with integrated wing nut mechanism, 1x Installation hardware kit<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Mobile antenna<\/p>\n","protected":false},"featured_media":47920,"template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"_joinchat":[]},"product_brand":[12124],"product_cat":[12333,12390,12324],"product_tag":[],"class_list":{"0":"post-13018","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-sirio-en","7":"product_cat-movil-en","8":"product_cat-mobile-monoband","9":"product_cat-antenas-en-2","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"acf":[],"yoast_head":"\nSirio SMA-108 VHF Mobile Antenna | 144 MHz 1\/4 Wave<\/title>\n<meta name=\"description\" content=\"Source the commercial Sirio SMA-108 1\/4 wave VHF mobile antenna. 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B2B stock.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pihernz.com\/en\/producto\/sirio-sma-108\/\" \/>\n<meta property=\"og:site_name\" content=\"Pihernz Comunicaciones\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/pihernz.comunicaciones\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-13T09:33:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pihernz.com\/wp-content\/uploads\/2019\/05\/Antena-sirio-SMA-108-550-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"615\" \/>\n\t<meta property=\"og:image:height\" content=\"622\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@pihernz\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/pihernz.com\\\/en\\\/producto\\\/sirio-sma-108\\\/\",\"url\":\"https:\\\/\\\/pihernz.com\\\/en\\\/producto\\\/sirio-sma-108\\\/\",\"name\":\"Sirio SMA-108 VHF Mobile Antenna | 144 MHz 1\\\/4 Wave\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pihernz.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pihernz.com\\\/en\\\/producto\\\/sirio-sma-108\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pihernz.com\\\/en\\\/producto\\\/sirio-sma-108\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pihernz.com\\\/wp-content\\\/uploads\\\/2019\\\/05\\\/Antena-sirio-SMA-108-550-1.jpg\",\"datePublished\":\"2019-05-12T23:00:00+00:00\",\"dateModified\":\"2026-07-13T09:33:33+00:00\",\"description\":\"Source the commercial Sirio SMA-108 1\\\/4 wave VHF mobile antenna. 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