Actually, another possibility would be to normalize to 1500 watts radiated power (vs. effective isotropic radiated power). This would allow the person with small lossy antennna elements (e.g. your HO
Power measurements are notoriously difficult to make. I don't think the FCC is going to raise a stink with anyone who is running less than 2 KW PEP. There was a guy about ten years ago who moved from
How "stiff" is the AB-577 relative to say a Rohn push-up mast? I need something that I can house bracket to the eave of the house at the 20ft level, that would be stiff enough to support the center o
Thanks to all who replied to my inquiry on AB-577. The unamimuous consensus was that AB-577 would not be a good choice for a 30' unguyed span (house bracket at 20' and 50' overall height), due to the
Be careful with using the new California PRB-1 law, Bill. A friend of mine pointed out to me that it doesn't apply to charter cities in California. This includes places like Los Angeles, San Francisc
There is a good illustration of this in Kraus's antenna book (2nd ed page 455). He plots the gain for the W8JK array as a function of spacing for the ideal lossless case, and for the real case with v
I would peel back a few inches of the jacket to see if the braid is corroding due to water intrusion. If the braid is clean, put some connectors on it and see if it works (it should run cool with a 1
If the PE is recommending that you go 5 times!! deeper than the manufacturers specs, I would want to review his calculations to see why he is wanting to go so deep. As Jim says, it certainly sounds l
Didn't Terry W6MKB have a big rotary christmas tree about 10 or 15 years ago which included an 8 element 20m yagi on a 100' boom. I think he made the cover of QST with it (or at least a picture insid
This connection to the AC safety is there anyway unless you are using cheater plugs on all your AC cords. The chassis' of all your rigs and amps are connected to the third wire ground of your AC serv
I have had pretty good luck by attaching ground radials to my SPG panel where all the feedlines come in. This seems to give the common-mode RF current coming back down the feedline somwhere to go bes
I don't believe Tom's assertions on loading coil taper or trap losses are based on "calculations". Yuri conveniently leaves out these facts so as to support his transparent (and pathological) dislike
Hi Yuri, Well, Cecil's example is a good explanation for why there is a current standing wave on an resonant antenna like a dipole. But, how do you get from that observation to the conclusion that th
generally, but the arriving difference in angle of radiation may cause additional fading, or >enhancement and is less defined as a system. Having the same gain and the circular wavefront seems to be
You can buy heat shrink tubing that is coated with a glue on the inside. Also, if your plug-to-wire aspect ratio is greater than 2:1, there are shrink-tube products out there that have shrink ratios
Our club has an old Wilson MT-61 tubular crank-up tower which is similar to the U.S. Tower MA-550. My friend is going to buy it from us and put it up at his new QTH, but he needs to replace the cable
The news I heard this evening indicated that the deaths occurred as a result of several 100 year old buildings located in the downtown area collapsing. Most of the newer buildings were reported to ha
John, actually I think you and Jim are both right. Apparently there are co-located facilities: http://www.wstf.nasa.gov/ 73 de Mike, W4EF........................... -- -- -- -- Weather Stations", and
Pat, McMaster Carr (www.mcmaster.com) doesn't appear to have any 1/2" titanium bolts (I think the biggest bolt they carry in titanium is 1/4-20), but they do have 4" long x 1/2-13 titanium threaded s
Gary, et al: This author of the ComputerWorld Article needs to get a copy of the following article that just hit the ARRL website: http://www.arrl.org/news/stories/2004/01/08/2/?nc=1 device that woul