PowerLine Inverter At the 2009 Field Day I found the small inverter for the laptop was emitting interference which showed up on the laptop screen when working PSK31. I borrowed a different one from N0VWX, and the interference problem went away. Since then, I was able to find a slightly newer model of the device and purchased it. It is a PowerLine 140/200 watt inverter, model number 0900-78. The unit is rated at 140 watts continuous and 200 watts peak power at 120 volts AC at the single outlet. It has an internal fan to keep the unit running cool. The cigarette plug neck pivots, and there is a USB charging port for IPODS, Cell Phones and other USB chargeable devices. A green LED shows when the unit is on. A low-voltage safety cut-off disengages when the DC voltage input drops below 10 volts. A 12-volt Cigarette Lighter Jack Outlet You might be wondering where I could find a cigarette lighter jack in the trailer to plug the inverter into 12 volts. Here's a handy little gizmo I made up for that purpose. It's a standard cigarette lighter jack from Walmart, and the input wires terminate with Anderson PowerPole connectors. The unit plugs into my MFJ power strip or can run straight from other Anderson PowerPole connectors in the trailer. I made three of these and have find them useful for running a 12-volt portable fan, a 2-meter handheld and other low current devices. In preparation for Field Day 2010, I made two more outlets to be used with a solar power display. The two 175 ma solar panels formerly used to keep Volkswagon batteries charged during transit and before they were sold are feeding an 18 Ah sealed lead acid battery. The battery voltage and current can be monitored with a simple meter box constructed from scrap wood. Anderson PowerPole connectors are mounted on the sides of the box to provide input from the panels and output to the battery.