{"product_id":"retevis-gmrs-mobile-antenna-48-2in-heavy-duty-fiberglass-gain-6-5db","title":"Retevis GMRS Mobile Antenna 48.2in - Heavy Duty Fiberglass Gain 6.5dB","description":"\u003cp\u003eIn this review of the Retevis GMRS Mobile Antenna the bottom line is simple: this is a rugged, long-length GMRS antenna built for drivers and outdoor users who need improved range without frequent repairs. The review focuses on practical performance - a 48.2in fiberglass whip with a spring base and 6.5dB gain that extends communication in open terrain and withstands vehicle vibration. Installation is straightforward with the supplied 16ft RG-58U coax and U-bolt bracket, making it a sensible upgrade for users running compatible GMRS mobiles or repeaters.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48.2in Fiberglass Whip:\u003c\/strong\u003e The full-length fiberglass element provides a high physical profile that helps extend range, especially in open areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.5dB Gain:\u003c\/strong\u003e Noticeable receive and transmit improvement over low-gain stock antennas, useful for reaching distant repeaters in favorable terrain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Base:\u003c\/strong\u003e A flexible spring base absorbs vehicle vibration and allows the antenna to flex out of the way to reduce breakage during off-road use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16ft RG-58U Cable:\u003c\/strong\u003e Includes a 16ft coax with a black bracket and U-bolt so installation to a mobile radio location is convenient and tidy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiberglass Construction:\u003c\/strong\u003e Corrosion-resistant fiberglass material stands up to rain and long-term outdoor exposure for durable service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with many GMRS mobile radios and repeaters so it can be repurposed across different setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe antenna is best for GMRS mobile users who need a durable, high-gain whip for longer-range communications when driving, camping, or operating from a mobile repeater. It suits hobbyists and practical users who prioritize a balance of range and durability without complex tuning.\u003c\/p\u003e\n\u003cp\u003eUsers who need ultra-compact antennas or have strict rooftop height limits should look elsewhere, and those who plan to test SWR must ensure a proper 50 ohm calibration; handheld analyzers are not recommended for accurate network analyzer checks.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid build quality and corrosion-resistant fiberglass make it durable in wet conditions.\u003c\/li\u003e\n\u003cli\u003eSpring base reduces damage during vibration and off-road flexing, improving longevity.\u003c\/li\u003e\n\u003cli\u003eIncluded 16ft RG-58U cable and U-bolt bracket simplify mobile installation without extra purchases.\u003c\/li\u003e\n\u003cli\u003eGood functional gain and compatibility extend real-world range for many users.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower performance received mixed feedback from customers, so results may vary by terrain and setup.\u003c\/li\u003e\n\u003cli\u003eFull-length 48.2in whip can be cumbersome in tight clearance situations or low garages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRetevis MR300 GMRS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e48.2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003eGMRS 462-467 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e6.5 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVSWR\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e50 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003e16 ft RG-58U with bracket and U-bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Retevis GMRS Mobile Antenna is a practical choice for mobile operators who want improved range and a durable build without complicated installs. It delivers reliable gain, a flexible spring base to protect the whip, and useful accessories for mounting, making it good value for most GMRS drivers and outdoor communicators.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this antenna easy to install on a vehicle?\u003c\/strong\u003e\u003cbr\u003eYes, it ships with a 16 ft RG-58U coax, black bracket and U-bolt so most mobile installations use bolts rather than screws and complete quickly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this antenna withstand rain and outdoor exposure?\u003c\/strong\u003e\u003cbr\u003eYes, the fiberglass construction is corrosion resistant and designed for long-term outdoor use in wet conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I test SWR with a handheld analyzer?\u003c\/strong\u003e\u003cbr\u003eFor accurate SWR testing use a 50 ohm calibrated network analyzer; handheld analyzers are not recommended for proper calibration.\u003c\/p\u003e","brand":"Retevis","offers":[{"title":"Default Title","offer_id":48194008187099,"sku":"B0BXCDTPQT","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61MKlCIUDgL._AC_SL1500.jpg?v=1770312657","url":"https:\/\/gearmusthave.com\/products\/retevis-gmrs-mobile-antenna-48-2in-heavy-duty-fiberglass-gain-6-5db","provider":"GearMustHave","version":"1.0","type":"link"}