Marine Electronics
Buy and sell fishfinders, chartplotters and marine radios in Guatemala.
From Puerto Quetzal the sport-fishing fleet runs well offshore to where the shelf drops away, and those boats carry the big screens, radar domes and fixed VHF sets that turn up second-hand when an owner upgrades. At the other end sits the small GPS fishfinder clamped to the console of an open boat on Lake Izabal or off Monterrico. Radar sets and autopilots change hands here as well, new and pre-owned. With any screen, two things decide what it is worth: which charts are loaded on it, and whether the transducer comes with it.
Fishfinder or chartplotter on a small boat’s console:
a fishfinder shows what is under the hull, a chartplotter shows where the boat is, and most screens made for small boats now do both. A sounder with built-in GPS marks a spot and takes you back to it, but carries no real chart. A combo unit, or a full multifunction display on a bigger boat, adds charts and can bring radar, engine data and an autopilot onto one screen. Sounders and their transducers sit under fishfinders; plotters, handheld GPS and radar under GPS and radar. The VHF radio is the other piece most boats carry. A handheld floats and suits an open boat with no cabin; a fixed set with a proper antenna reaches much further, and with DSC it sends a distress call carrying your position at one press.
Chart cards and the Guatemalan coast:
they matter more than screen size. Many units reach Guatemala from the United States, and those bought there often come with US coastal charts preloaded, which show nothing useful off Puerto Quetzal or in the Bay of Amatique. A plotter bought new locally tends to carry only a worldwide basemap: an outline of the coast with no depths. Detailed coverage of Guatemala comes on a Central America and Caribbean chart card or download, and it has to be the version made for your brand of plotter: Garmin screens take Garmin Navionics+, other brands the standard Navionics card. Before buying, ask which region is loaded and how old the charts are.
Transducers, chart cards and the price of a used screen:
new, a small GPS fishfinder with its transducer costs close to Q3,000, and a seven-inch chartplotter with no sonar runs near Q10,000 before you add a detailed chart card. Much of what a used fishfinder is worth sits in the transducer and its cable, so a head unit offered on its own fetches far less than the same unit with everything it needs to see the bottom. Plotters hold value according to their charts: one with a current Central American card is worth clearly more than an identical screen with US charts or a bare basemap.
A fogged screen or a spliced transducer cable:
power any used unit from a battery before you pay. Mist inside the glass means air has got between lens and display, and if it does not clear it is a factory repair. Look for dead pixels and a screen faded by sun, then check the pins on the power and transducer plugs for green crust. Transducer plugs are specific to each brand and often to each generation within a range, so match the plug, not the logo. A cable cut and spliced to get a transducer out of a hull loses signal. On radar, older dome and open-array sets use a magnetron that wears with transmitting time, while solid-state units have none to wear out. On a DSC radio, ask whether the previous owner’s MMSI number has been cleared: many sets accept it only once, and clearing it takes a dealer.
A plotter or sounder ready for its next boat:
list the head unit with the parts that make it work: the transducer and how it mounts, the power cable, the bracket, the sun cover and the chart card in the slot. Photograph the screen switched on at its chart information page, and the plugs close up so a buyer can match them. For a radar, say dome or open array and magnetron or solid-state; for a VHF, whether the MMSI has been cleared. Keep a charged boat battery ready: someone driving in from Quetzaltenango or Escuintla will want to watch the plotter boot, find its satellites and show sonar with the transducer dipped in a bucket of water before handing over the money.