*From a google search:* http://www.symantec.com/avcenter/venc/data/jdbgmgr.exe.file.hoax.html * Jdbgmgr*.*exe* file hoax. Reported on: April 12, 2002. *...* *Jdbgmgr*.*exe* is the file to which the h
But if feedline losses are so bad that the extra loss from high SWR is significant, you've got a bigger problem in the feedline. Extra loss is below 1 dB in a low loss line until SWR exceeds 10:1 Wit
Note that it can be up to nearly 4 miles away for a major airport as the ceiling for this category is if it pierces a cone with a 1% slope up from the airport, up to 200 feet higher than the airport.
Remember, we're not talking ham towers, we're talking about those thousand-foot guyed and lighted monsters. It still sounds like a lot, but it would be scattered over a few acres of guy field. At nig
I've done a search for "double figure 8 bend" on the web and can't find any other references to this knot. Not on the web, but in my 60 year old "The Ashley Book of Knots" in the chapter on bends: 14
Emoto takes it a step further - they use a method they call GDsquared which is proportional to weight times square of radius, so instead of torque, they consider rotating energy. I don't know if this
Or since it's a metric hole, 2370 kg (call it 2.4 metric tons) -- Darrel J. Van Buer, AK6I darrel@vanbuer.net _______________________________________________ See: http://www.mscomputer.com for "Self
you Alan NV8A While I don't want to over simplify, but you've got many hundreds of square feet of roof and adding 5 to 15 square feet of antenna & tower. If you spread the forces of the tower, I can
I recently bought some anchor bolts for my tubular tower from http://www.foundationbolts.net/ I'm a computer guy, not a structural engineer, but they have a well organized site, fairly wide stock and
Old US Towers catalogs showed L shaped J-bolts for the foundations, new catalogs show straight bolts with nut/washer on the bottom. Same lengths and diameters. Like so much else these days, it probab
I had a lot of trouble tuning 10m once with a C4XL (and changing element length was really bizarre - small changes act as expected, but at some point there would be a big jump to a wildly different r
Another thing to watch for when comparing GPS and maps is the "datum". This defines the reference system for coordinates. Most topo maps in the US are NAD-27, but the default for most GPS and very re
While I agree Powell has not been great as chairman of the FCC, but it IS an administrative position. The FCC has some staff who are technical. The commisioners just need something of an open mind ab
Given that QST, like most hobby magazines has no significant paid writing staff, most technical articles are contributed by people who who have decided to write about something they've done. QST will
They are not all Mexicans. Most do come from Spanish speaking countries in Central and South America. The distribution varies some around the US. Many are certainly undocumented, unskilled and with l
I credit Pete with having offered articles in the past and to NCJ, not just casting stones. On engineers, I only said they are better paid than most writers, implying they were beyond the budget of m
It also shows straight bolts on their foundation drawings. But they DO have a nut and washer welded? on the end to keep it embedded. I have no idea whether epoxying a straight rod into a drilled hole
Today, almost all the DTV signals are at UHF and relatively low power compared to the current AM/FM NTSC signals. In a few years when they have to give up their analog channels, many will move back t
I don't actively use 2.4 GHz so the only affect now is nil, in future if I got into it, it would presumably drive up costs and obsolete some non APC gear, but several observiatons: It's first and for