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Some "SWR" meters have a switch that must be used in order to allow the meter to be adjusted for full scale deflection. Then the switch is put into a "quasi-SWR"mode. The meter now doesn't compute the actual SWR; it shows a slight upscale reading which can throw one off if he's not watching...
1. Unplug from wall sockets.
2. Using a suitable length of wire (20 ga should be enough). Connect one end of it to the chassis using an alligator clip. If you're right-handed, put your left hand in your pocket and keep it there while you touch the other end of the wire to every connection...
You can get "Chlorphen-12" from Amazon. It's the same formula as the old "Chlortrimeton", which appears not to be for sale anywhere now. It's a bit expensive, but it works -- at least for me.
"Calibrated" doesn't mean "perfect". The manufacturer of the equipment specifies what the maximum error of their product is, and the calibration lab uses that information, including the temperature, relative humidity, line voltage and several other factors that have to be considered. THEN the...
Most antenna spec sheets include a calculation of the number of square feet each antenna occupies in the air when sitting on the tower or mast, and how much wind it's rated for at specific heights/guying arrangements, etc. Didn't see any such information on this antenna.
Very true.
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When doing antennas, think of the different bands you use, or might be using, in the future. A yagi will work for one band unless it's designed and tested to be a multibander, like most ham yagis are (20/15/10 meters; will work well on all three bands if properly installed and...
Any analog meter can be calibrated (which simply means "compared with"). Problem is that many folks don't realize that by calibrating a meter, that meter does not become the Holy Grail of accuracy/precision. Most analog multimeters have a maximum error tolerance of plus or minus 5%, 10% ) or...
The SWR of an antenna system is just that. Doesn't matter if you have just a watt or so, or much more, if the antenna is rated for the power level. A lot of SWR meters won't handle more than a hundred watts or so, and if your meter needs to be adjusted for full scale each time you change power...
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