1/10/2024 0 Comments Antenna tunerTo gain a basic understanding of this topic takes some time - we are in a very poor propagation pattern due to very low solar activity, and an indoor antenna is a further problem since it will pick up every bit of noise anywhere in the building. These 3 questions address the topic of propagation - how a HF signal is bent from one place to another. What frequencies may be open to that part of the world at that time?.What time of day - is it night or day there?.From what part of the world are you trying to hear something?.There's another factor most newcomers don't completely understand - in order to have a chance at hearing something on HF, you need to keep in mind 3 basic questions So for a stealth antenna it's also a good option. I have literally stood in the loop to pull tension into the antenna's (I'm 270 lbs) and never seen a failure at any point.Īlso, these wire antenna's all but disappear once they are up becasue the wire is small. I have had my wire antenna's in 8 MPH winds and not fail. The zinc or galvanized works best and is really strong. (Not barb wire although it would work, just a PAIN to work with) and use it. Find a Tractor Supply or other farm store and buy a role of high tension fence wire. But in true tight ass style I never went the way of the copper weld or other 'antenna' wire. Remember that an OCF dipole needs a 4:1 or 4 to 1 balun.ħ5 foot of wire is not going to be enough. for some reason I get alot of RF in the shack on 40 meters so I don't use it there. and it works wonders on 80 20 17 15 10 meters. I run an off center fed dipole cut at 80 meters. An off center fed dipole is a simple dipole with the feed point moved. A Windom works off a ground plane that is below it. Some folks call it a Windom but that's not fully correct. If you have a tuner, and I suggest using one, the best luck I have had is with a an off center fed dipole. of course then 468/f would be a quarter wave. The math is 234/f and f being the frequency in Mhz. That would be around a half wave if I remember right. They will peak the received signal and then tune with the transmitter to finish tuning.Īs far as 75 feet for 20 meters. In fact, most guys with antenna tuners will use the noise floor or a received signal to begin tuning their antenna tuner. The radio is going to work better receiving off a 50 ohm in feed. Your right, an antenna tuner WILL help you on receive.
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