{"id":17759,"date":"2019-03-19T00:00:00","date_gmt":"2019-03-18T23:00:00","guid":{"rendered":"https:\/\/pihernz.com\/product\/sgm505\/"},"modified":"2026-07-09T12:49:17","modified_gmt":"2026-07-09T10:49:17","slug":"sgm505","status":"publish","type":"product","link":"https:\/\/pihernz.com\/en\/producto\/sgm505\/","title":{"rendered":"Diamond SGM505 Mobile Dual-Band Antenna \u2013 High-Gain 144\/430MHz VHF\/UHF Vehicle Whip (2.15\/3.8dBi) with Radialless C-Load Design and MP Connector"},"content":{"rendered":"

The Diamond SGM505 mobile dual-band antenna<\/strong> is a commercial-grade, high-performance vehicular RF radiator precision-engineered to deliver robust transmission efficiency and high-integrity signal clarity across multi-band communication grids. Built by an industry leader in professional radio frequency hardware, this compact mobile whip focuses peak performance over the core 144 MHz (VHF) and 430 MHz (UHF)<\/strong> bands. It serves as an essential logistics procurement component for emergency response coordinates, commercial security vehicle arrays, tactical transport fleets, and high-volume B2B radiocommunication accessory wholesale distribution networks looking to supply elite vehicular antenna assets.<\/p>\n

The advanced internal electrical and mechanical configuration of the Diamond SGM505 utilizes distinct radiation wave architectures to maximize low-angle power propagation across different bands. On the 144 MHz VHF spectrum, it operates as a high-efficiency 1\/4 wave vertical radiator yielding a sharp 2.15 dBi gain<\/strong>. When operating on the 430 MHz UHF band, the internal core transitions seamlessly into a 6\/8 wave C-Load radialless configuration, stepping up radiation field power to an impressive 3.8 dBi gain<\/strong>. Because of this specialized radialless architecture on UHF, the antenna maintains a highly stable radiation profile without relying heavily on a massive vehicle metallic ground plane, ensuring consistent tracking patterns regardless of the mounting location.<\/p>\n

Engineered to handle dense multi-shift team duty cycles without element degradation, the assembly boasts a maximum power rating of 100W FM (Total)<\/strong>. It channels radio frequency energy cleanly through a nominal 50-ohm characteristic impedance<\/strong> match and maintains an tight, low-loss VSWR of less than 1.5:1<\/strong> across target frequencies to protect delicate transceiver final amplifier stages against destructive power reflections. The bottom base framework is terminated with a heavy-duty, high-retention standard MP connector<\/strong> (UHF Male \/ PL-259 type) that threads securely onto standard vehicle mobile mounts, trunk lip clamps, or high-retention magnetic bases.<\/p>\n

Housed in a ruggedized, weather-proof assembly built to survive continuous highway wind velocities and harsh marine-air environments, this sleek mobile whip stands at a highly practical physical length of exactly 0.53 meters<\/strong> and weighs a balanced 137 grams<\/strong>, preventing excessive mechanical strain or stress fractures on thin roof sheets or light utility brackets. Delivered completely turnkey, this original Japanese-engineered vertical array guarantees immediate technical system alignment, optimal fleet vehicle clearance profiles, and absolute deployment readiness on the workbench and out on the road.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Technical Specification Parameter<\/th>\nSpecifications<\/th>\n<\/tr>\n<\/thead>\n
Product Brand Designation<\/td>\nDiamond Antenna (Original Genuine Japanese Mobile Line)<\/td>\n<\/tr>\n
Hardware Model Designation<\/td>\nSGM505 \/ SGM-505 (Super Gainer Slim Mobile Series)<\/td>\n<\/tr>\n
Primary Component Classification<\/td>\nVHF\/UHF Dual-Band Mobile Whip Antenna<\/td>\n<\/tr>\n
Target Active Frequency Bands<\/td>\n144 MHz (2-Meter VHF Band) \/ 430 MHz (70-Centimeter UHF Band)<\/td>\n<\/tr>\n
VHF Band Antenna Type & Gain<\/td>\n1\/4 Wave High-Efficiency Vertical \u2013 2.15 dBi Propagation Gain<\/td>\n<\/tr>\n
UHF Band Antenna Type & Gain<\/td>\n6\/8 Wave C-Load Radialless Design \u2013 3.8 dBi Focused Power Gain<\/td>\n<\/tr>\n
Maximum Input RF Power Capacity<\/td>\n100 Watts (100W) FM Continuous Total Combined Threshold<\/td>\n<\/tr>\n
Voltage Standing Wave Ratio<\/td>\nVSWR Less than 1.5:1 Nominal Center Resonance Match<\/td>\n<\/tr>\n
System Characteristic Impedance<\/td>\n50 Ohms Nominal Line Optimization Match<\/td>\n<\/tr>\n
Primary RF Interface Connection<\/td>\nMP Type (UHF Male \/ Standard PL-259 Metric Fitting)<\/td>\n<\/tr>\n
Total Physical Antenna Length<\/td>\n0.53 meters (53 cm) Compact Low-Clearance Profile<\/td>\n<\/tr>\n
Net Operational Component Mass<\/td>\n137 grams Ultra-Lightweight Low-Strain Weight Scale<\/td>\n<\/tr>\n
Verified Hardware Compatibility Scope<\/td>\nSO-239 (UHF Female) mobile base mounts, heavy-duty magnetic mounts, roof rails, luggage rack adapters, and dual-band mobile vehicular transceivers<\/td>\n<\/tr>\n
Primary Fleet Utility Purpose<\/td>\nTurnkey vehicular radio outfitting, high-gain tactical communication tracking, low-profile clearance protection, and radio final stage amplification mismatch protection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Dual band mobile antenna<\/p>\n","protected":false},"featured_media":22185,"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":[12331,12397,12324],"product_tag":[],"class_list":{"0":"post-17759","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-diamond-antenna-en","7":"product_cat-diamond-antenas-en","8":"product_cat-movil-doble-banda-en","9":"product_cat-antenas-en-2","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"acf":[],"yoast_head":"\nDiamond SGM505 Mobile Antenna | Dual-Band 144\/430MHz Whip | B2B<\/title>\n<meta name=\"description\" content=\"Source the authentic Diamond SGM505 mobile dual-band antenna. 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