What’s Involved in Setting Up a Lithium Battery System?
Our 2004 Privilege 435 Confianza (Connie for short) came equipped with traditional lead-acid batteries—5 100ah for the house bank and 2 starter batteries. We...
Leaping Into Lithium
Your dock neighbor just switched out her old 12-volt lead-acid batteries for lithium-ion batteries. Should you? The lithium solution will be more expensive, but...
Estimating Total Capacity in an Old Battery
Volt meters, ammeters, and bank monitors can all give you part of the story, but only a draw-down test, performed over 6-24 hours will...
Solar Power and Battery Checkup
Batteries and solar panels can be a black box. We can’t see or hear or feel what is going on inside. They’re not complicated...
Mailport: Carl Alberg, Tinned Wire, Fiberglass Durability
HIGH PRAISE FOR CARL ALBERG
Regarding your report “Small-boat Dreams and Carl Alberg’s Classic Daysailers,” my first sailboat, 25 years ago, was a Pearson Electra....
Reliable Three-way Wire Connections
Connecting two wires is simple; a crimp butt connector using a ratchet crimper, and adhesive lined heat shrink in damp locations, where there is...
Preventing Electric Shock at the Dock
The human body runs on electricity and if you overload the nervous system with an external field, everything goes haywire. Every year several people die because they go swimming near a dock, a wiring fault creates an electric field in the water, and their muscles freeze. It is called Electric Shock Drowning (ESD).
Batteries, Cleaners & More
As a subscriber, you have free access to our back-issue archive-more than 2,000 articles. Here are a few topics you might find relevant this season.
Testing VHF Coaxial
The loss in RF coaxial cable increases substantially and quickly, when there is water intrusion. Coax that uses foam dielectric, like RG8X and LMR type coax, is particularly prone to this problem because the water can quickly propagate along the foam dielectric used in these type coaxes.
Antenna Gain and VHF Transmission Range
Recreational marine VHF antennas are usually broken down into three categories: 3- and 4-foot sailboat antennas (3dB gain), 8-foot powerboat antennas (6 dB gain) and 16-plus-foot, long-stick antennas (9+ dB gain) that are popular on larger, long-range craft. Antenna gain is a ratio related to an antennas effective radiated power (ERP) instead of a fixed quantitative value.