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![]() Bob wrote: Terry - Have you found any specific wall warts that you would consider reasonably electrically quiet? Thanks again, Bob Even with wall warts that appear to be identical, the RFI varies a great deal. I go to the local good will store once every couple of weeks with my trusty DX398 and check out their constantly changing stock for quite ones. Stay away from switch mode wall warts. They are very light weight and are RFI demons. I try to keep a selection on hand of the more common voltages and try to limit my purchases to those that are fastened with screws. At home I have modifed nearly everything in the radio room to run from +12V so I only have to worry about the one big supply. It also makes operation during power outages easier as I have several GellCells on constant float ready to take over when the grid goes down. I will try to assemble/edit down a list of usefull links and email, or get Will to email, them to you. The r2000swl/swler accounts are dead. Too much hate filled spam. What type receiver are you using? What type antenna(s).... What is your special interest... It is hard to overestimate how much a good ground can improve every situation. "Good" is difficult to define, but in my mind it is much more then a single 8' ground rod or a cold water pipe. A triad of three 8' ground rods arranged in a equalateral 12" triangle, interconnected by #8 solid copper wire is a good start. An alternative can be made with one 8' rod, and ~20' of soft copper tubing buried at lease a foot. The use of balanced antennas makes the ground less critical. I am not a big fan of loops, but I have found that active, broadband dipoles, in the right places can reduce the need of a good ground nearly completly. And while I don't care much for loops, many first class DXers swear by them. Good, well balanced loops don't require much in the way of a ground. Terry |
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