{"id":97802,"date":"2026-10-02T11:09:05","date_gmt":"2026-10-02T09:09:05","guid":{"rendered":"https:\/\/pihernz.com\/?post_type=product&#038;p=97802"},"modified":"2026-10-02T11:17:28","modified_gmt":"2026-10-02T09:17:28","slug":"diamond-ss770r-phasing-harness-beam-antennas-vhf-uhf","status":"publish","type":"product","link":"https:\/\/pihernz.com\/en\/producto\/diamond-ss770r-phasing-harness-beam-antennas-vhf-uhf\/","title":{"rendered":"Diamond SS770R Phasing Harness for Stacking Beam Antennas on 2m and 70cm Bands"},"content":{"rendered":"<p>The Diamond SS770R is a high-precision phasing harness engineered to phase together two directional beam or yagi antennas across the 2-meter (144 MHz) and 70-centimeter (430 MHz) amateur radio bands. Designed as the dedicated phasing solution by Diamond Antenna for antenna stacking, it allows operators to combine matching beams\u2014such as the Diamond SB144 and SB430\u2014ensuring symmetrical signal distribution and balanced 50-ohm impedance matching to the main transmission line.<\/p>\n<p>Built with low-loss coaxial phasing sections and high-grade connectors, the SS770R effectively sums the effective radiated power of two beam antennas while narrowing the main beamwidth in either the horizontal or vertical plane. This configuration delivers a substantial increase in forward gain and sharpens front-to-back discrimination against unwanted off-axis noise, making it an essential setup for VHF\/UHF DX communications, amateur satellite tracking, and contest operations.<\/p>\n<hr \/>\n<h2>Key Advantages<\/h2>\n<ul>\n<li><strong>Factory-Calibrated Phasing:<\/strong> Specifically engineered to combine two directional antennas in phase on 144 MHz and 430 MHz without complicated manual trimming.<\/li>\n<li><strong>Optimized for Diamond Beam Systems:<\/strong> Seamlessly matches stacked setups utilizing Diamond SB144 (2 m) and SB430 (70 cm) directional beams.<\/li>\n<li><strong>Increased Gain and Directivity:<\/strong> Combines the aperture of two antennas to focus radiation patterns and extend reaching power on long-haul contacts.<\/li>\n<li><strong>Low-Loss RF Design:<\/strong> Precision termination and reinforced shielding minimize insertion loss and preserve weak signal reception on VHF and UHF.<\/li>\n<li><strong>Weatherproof Reliability:<\/strong> Durable outer materials designed to endure continuous outdoor exposure on towers, crossbooms, and antenna masts.<\/li>\n<\/ul>\n<hr \/>\n<h2>Recommended Applications<\/h2>\n<h3>VHF\/UHF Directional Stacking Systems<\/h3>\n<p>Combines two identical beam antennas horizontally or vertically to boost signal punch on 2m and 70cm weak-signal SSB and CW DX modes.<\/p>\n<h3>Amateur Satellite Tracking and EME Work<\/h3>\n<p>Ideal for stations requiring enhanced directional gain, tighter lobe control, and lower side-lobe noise when tracking low-Earth orbit satellites or working marginal links.<\/p>\n<h3>Contests and Field Day Deployments<\/h3>\n<p>Enables quick, reliable dual-beam array deployment on portable masts without needing to build custom phasing lines in the field.<\/p>\n<hr \/>\n<h2>Technical Specifications<\/h2>\n<table style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd;\">\n<thead>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Feature<\/th>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Brand<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Diamond Antenna<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Model<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">SS770R<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Component Type<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2-Way Directional Antenna Phasing Harness<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Operating Bands<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2 Meters (VHF \/ ~144 MHz) and 70 Centimeters (UHF \/ ~430 MHz)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Primary Compatibility<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Directional beam antennas (optimized for Diamond SB144 and SB430)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>System Impedance<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">50 \u03a9<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>Application<\/strong><\/td>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">In-phase stacking of 2 beam antennas<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>Key Highlights<\/h2>\n<ul>\n<li>Original Diamond Antenna phasing harness for stacking 2 beam antennas.<\/li>\n<li>Rated for operation on both 2m (144 MHz) and 70cm (430 MHz) bands.<\/li>\n<li>Tailored for coupling antennas such as the Diamond SB144 and SB430.<\/li>\n<li>Guarantees phase balance and matched 50-ohm line impedance.<\/li>\n<li>Robust, low-attenuation coaxial assembly built for demanding weather conditions.<\/li>\n<\/ul>\n<hr \/>\n<h2>Package Contents<\/h2>\n<ul>\n<li>1x Diamond SS770R Phasing Harness.<\/li>\n<\/ul>\n<hr \/>\n<h2>Frequently Asked Questions<\/h2>\n<h3>What is the benefit of stacking two antennas with the Diamond SS770R?<\/h3>\n<p>Stacking two identical beams with a phasing harness adds forward gain (approximately +3 dB over a single antenna) while narrowing the radiation lobe, resulting in greater reach and improved rejection of off-axis interference.<\/p>\n<h3>Can antennas for different frequency bands be combined with this harness?<\/h3>\n<p>No. For proper phase balance and impedance matching, the two antennas connected to the harness must be identical models tuned to the same operating band (e.g., two 144 MHz beams or two 430 MHz beams) and mounted at the recommended stacking distance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Optimized to phase together beam antennas such as the Diamond SB144 and SB430.<\/p>\n<ul>\n<li>Maintains phase symmetry and clean 50-ohm system impedance matching.<\/li>\n<li>Low-loss outdoor construction designed to maximize forward gain for DX and satellite work.<\/li>\n<\/ul>\n","protected":false},"featured_media":97804,"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":[12171],"product_cat":[12395,12324],"product_tag":[],"class_list":["post-97802","product","type-product","status-publish","has-post-thumbnail","product_brand-diamond-antenna-en","product_cat-dipolos-hf-en","product_cat-antenas-en-2","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Diamond SS770R Phasing Harness for Stacking 2m\/70cm Beams<\/title>\n<meta name=\"description\" content=\"Diamond SS770R phasing harness for stacking 2 directional beam antennas on 2m (144 MHz) and 70cm (430 MHz). Compatible with SB144 &amp; SB430 for maximum DX gain.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pihernz.com\/en\/producto\/diamond-ss770r-phasing-harness-beam-antennas-vhf-uhf\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Diamond SS770R Phasing Harness for Stacking 2m\/70cm Beams\" \/>\n<meta property=\"og:description\" content=\"Diamond SS770R phasing harness for stacking 2 directional beam antennas on 2m (144 MHz) and 70cm (430 MHz). 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