nope, go for it! Good afternoon gentlemen, A 100 metre(325ft)drum of 75ohm, 25mm(1 inch) diameter coax, and the appropriate connectors, has been donated to my GM project, for which I am very grateful
assuming the 2.4ghz equipment is properly protected against any hf that may get picked up on it's antenna, or more likely the cables, there shouldn't be a need to have any separation between them. I
yes, in a classic yagi with straight and parallel elements that is true... but when you bend or make the driven element not a simple half wave dipole then it can have an effect on the pattern by itse
i have an 18kw Kohler unit with auto start and transfer connected up to a 500 gal propane tank which also fuels heat, hot water, and cook top. It does have some rif problems on 160m from it's battery
that is an important point... there is a break point between about 15-20kw where you go from a relatively cheap and simple air cooled engine to one that requires liquid cooling with the associated in
indeed, the 300 series should not be magnetic... here a couple of many explanations available with a google search: http://www.mceproducts.com/knowledge-base/article/article-dtl.asp?id=18 http://www.
better than dirt, worse than solid metal. Any hint on the values of conductivity and relative dielectric constant of a reinforced concrete rooftop? David HK1A EC5KXA AE5XQ ___________________________
concrete in a hole in the ground is going to absorb plenty of water from the soil. after all, it requires water for curing, don't give it enough and it won't cure properly. I have never sealed a towe
the parrot got my attention because of a couple factors... 1. ready to fly out of the box 2. control from ipod/ipad/android with free app 3. comes with hd camera built in 4. streams video from camera
beware of business use right now. the faa is coming down on comercial use as they have not written the rules yet and there is some kind of ban on commercial use for the next year or two so they can g
its a Parrot AR-Drone 2.0. http://ardrone2.parrot.com/usa/ i have flown it around my living/dining room (has about 12' vaulted ceiling) a dozen or so times... but that was only my 3rd or 4th attempt
i would worry more about shooting it down with some rf... for the weight of it there can't be much shielding inside. That's a great idea but I wonder about all the QRN generated by all those DC motor
i only see control apps for i-thingies and android devices. they use the tilt sensors in the devices for control, and can use the compass in them for absolute orientation also. though they do have a
no, the yaesu does not have a brake, and the motor runs on 12-24vdc. so you can easily turn it with a single power supply and observe direction out a window or calibrate an ohm meter on the pot. Does
The more connected the better... but beware, this is a religious argument with some so you will hear that the absolutely must be complete separate and you must put chokes at the feedpoints, etc... ig
I think freezing rain is a bit of a different character. I am testing one of those coatings on solar panels and it did not stop freezing rain from sticking, nor does it stop frost, snow, or dew... fr
the part that makes that 'blue sky' lightning even more alarming is that it is usually a relatively high current and long duration positive polarity stroke that comes all the way from the top of the
yes they are, I have run thousands of feet at the lab where I work in conduit that has been in use for years. look for what they call indoor-outdoor cable like the stuff on this page: http://www.blac
having a pre-installed pulling loop is a nice thing also. the last time I did it we had to buy one of the Chinese finger trap pulling things... can't just wrap a rope around it like you might with co
actually.... you can have great grounding and still get this kind of damage if you don't equalize the incoming line voltage with ground at the entrance. most of this damage was probably from what is