{"product_id":"marine-vhf-radio-with-gps-and-dsc-retevis-rm20-fixed-mount","title":"Marine VHF Radio with GPS and DSC - Retevis RM20 Fixed Mount","description":"\u003cp\u003eIn this review the Retevis RM20 is judged as a compact fixed-mount marine VHF radio aimed at recreational boaters who need reliable communication and position sharing without a lot of installation fuss. The single biggest reason to consider the RM20 is its built-in GPS and DSC capability that work out of the box to send and receive position information, including distress and individual calls, making it practical for day boats, fishing boats, and small powerboats where quick setup and clear communication matter.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in GPS and DSC:\u003c\/strong\u003e Ready-to-use DSC calling and automatic position sharing without separate GPS wiring, simplifying emergency and routine communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-power speaker:\u003c\/strong\u003e Up to 110dB output and support for an external 3.5mm speaker so calls can be heard clearly over wind and engine noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP67 waterproof:\u003c\/strong\u003e Can withstand being submerged up to 1 meter for 30 minutes, so it tolerates rough conditions and spray on open boats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNOAA weather channels:\u003c\/strong\u003e Ten weather channels with audible and visual alerts keep the operator informed of nearby threatening conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReadable display:\u003c\/strong\u003e A compact unit with a large dot-matrix LCD and clear keypad that remain visible in low light for straightforward operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAqua Quake draining:\u003c\/strong\u003e Speaker cone vibration clears water from the grille to maintain sound quality after exposure to moisture.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe RM20 is aimed at owners of small recreational boats, fishing boats, and powerboats who want a compact fixed-mount VHF that reduces installation complexity by including GPS and DSC in a single unit. Its loud speaker and external speaker option make it a good fit for vessels operating in windy or noisy environments where hearing calls is essential.\u003c\/p\u003e\u003cp\u003eBoaters who need advanced integrated systems, extensive networking, or custom wired integrations with multifunction displays might prefer a higher-end radio designed for complex installations. Likewise, those requiring commercial-grade specifications beyond IP67 submersion resistance should evaluate professional marine comms models.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuilt-in GPS and DSC provide fast position sharing and distress capability without extra wiring.\u003c\/li\u003e\n\u003cli\u003eVery loud speaker (up to 110dB) and external speaker support improve audibility on noisy boats.\u003c\/li\u003e\n\u003cli\u003eIP67 waterproof rating and Aqua Quake help keep the unit working after exposure to water.\u003c\/li\u003e\n\u003cli\u003eNOAA weather channels with alerts add a practical safety layer for coastal navigation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSound quality impressions are mixed among users, so some owners may opt to add a louder external speaker for best results.\u003c\/li\u003e\n\u003cli\u003eThe compact feature set may not satisfy users who want advanced integrations with other shipboard electronics.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel type\u003c\/td\u003e\n\u003ctd\u003eFixed-mount Marine VHF Radio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuilt-in GPS\u003c\/td\u003e\n\u003ctd\u003eYes (for DSC position sharing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDSC capability\u003c\/td\u003e\n\u003ctd\u003eDistress and individual calling with position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproof rating\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker volume\u003c\/td\u003e\n\u003ctd\u003eUp to 110dB; external 3.5mm speaker supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeather\u003c\/td\u003e\n\u003ctd\u003e10 NOAA channels with audible and visual alerts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eIncludes mounting brackets for bracket and flush mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Retevis RM20 is a practical value choice for recreational boaters who want reliable VHF communications with built-in GPS and DSC and minimal installation hassle. Its loud speaker, NOAA weather alerts, and IP67 protection make it well suited to day boats and fishing boats; users who prioritize integrated marine networking or top-tier audio may choose to add external speakers or look at higher-end models.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDoes the RM20 need a separate GPS for DSC?\u003c\/strong\u003e\u003cbr\u003eNo. The unit includes a built-in GPS so DSC calls and position sharing work out of the box without additional GPS wiring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the radio waterproof enough for open boat use?\u003c\/strong\u003e\u003cbr\u003eYes. The RM20 meets IP67 standards, meaning it can be submerged to 1 meter for up to 30 minutes and resists spray and rough sea conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I improve loudness if needed?\u003c\/strong\u003e\u003cbr\u003eYes. The radio supports an external 3.5mm speaker and you can connect a louder speaker if the built-in 110dB output does not meet your needs.\u003c\/p\u003e","brand":"Retevis","offers":[{"title":"Default Title","offer_id":48178881626331,"sku":"B0B5SV9JVY","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61j3Y2OVuxL._AC_SL1500.jpg?v=1769569773","url":"https:\/\/gearmusthave.com\/products\/marine-vhf-radio-with-gps-and-dsc-retevis-rm20-fixed-mount","provider":"GearMustHave","version":"1.0","type":"link"}