It would take some work, but finding the "bad" address among 700 isn't as hard as you might think. It would take no more than 10 test mailings to appropriate subsets of the address list. Of course, y
Winter greetings! With the help of a good antenna guy, I installed a roof-mount tower (20 ft Rohn 25) with a Yaesu G-1000 holding up a 3-el SteppIR on an 8 ft mast. Nothing exotic here, but it gets o
A fairly short run - maybe 60 feet. It's "normal" cable - 9/16" OD grey jacket. Can't immediately give the wire gauge. -Martin AA6E _______________________________________________ See: http://www.msc
Responding to Jim (but not sure which one!) -- You say "That's why I was thinking that coming up with a suitable peer-reviewed document aimed directly at hams would be useful. Not an application note
Ham Radio Outlet is another source: http://www.hamradio.com/ . I'm looking for a shop or dealer in U.S. who sells Polyphaser coaxial protectors in very small quantities (5-10pcs). Any answer will be
I bought a bunch of PolyPhaser and other parts for a single point ground system for the radio room. Now I have to figure how I'm really going to use them. My problem is how to relate the "SPG" for th
I appreciate the good counsel to date. I am trying to zero in on a few issues. 1. The problem with connecting the AC green wire to the radio room ground and then connecting my bulkhead "SPG" to a new
Keith, I believe "fault" is the general electrical term for power going where it shouldn't. That's why we have protective system grounds in AC systems. If there is a short circuit in an appliance con
Maybe - If your equipment is grounded via the green AC wire (third pin) AND to a separate ground, then you have to expect some current will flow from one "ground" to the other under various fault or
Surface Type Conductivity (S/m) Fresh water .001 Salt water 5.0 Pastoral hills (dallas!) .0303 etc Fresh water is about the worst ground system there is, according to this table. In terms of conduct
Jim, Thanks for a great summary of I/O possibilities. I checked at LabJack, and they say that they do have limited support for Linux 2.4 and 2.6 kernels on the U12. Cost $119, quantity 1. 73, Martin
Solid seems right to me, too, but I wonder why a lot of traditional lightning protection is done with stranded. See, for example, http://molasar.blackmagic.com/ses/bruceg/EMC/litfacil.html . My house
My sources say that 1/2" copper pipe/tube with .032" wall weighs 0.18 lb/ft, which is what the lightning guys say you need FWIW. Common soft copper tubing @ 1/2" seems doable. Soft copper tubing is a