A few days ago I put one up that's 71' long. I also put a good RF ground under it.... lots of radials with one hooked to my neighbor's chicken wire fence and another to a cold water spigot to my house. I've made a lot of CW contacts with it over the weekend. 17 meters opened up and I worked a station in Denmark and another in England. Domestic QSO's included HI and AK. I'm surprised how well a "random" wire antenna works.
I used to get microphone “tingle” with my efhw antenna on transmit. I took your advice and choked off the coax feeder before it enters the rig. Did the trick. Problem solved. Thanks!
I have a theory that as soon as you introduce an antenna tuner, you are resonating the antenna, as well as matching z. Therefore the antenna ends up becoming 'electrically' the correct length anyway. There is no RANDOM. The reason for avoiding even 1/4 wavelength multiples is the very difficult z match which extends above 2k. But a very good video and great hands on instruction. Yep solder your crimps 😊. Paul.
I like the way you explain the antenna in layman‘s terms. Very easy to follow which led me to subscribing to your channel. I wanted to clarify the distance between your Unun and choke. 25 feet, right? That would give you a 25 foot counterpoise.
I have a myantennas 160 thru 10m longwire unun with 135 feet of wire in a lazy inverted v. I use 80 feet of times microwave lmr 400 coax to a ldg remote tuner outside 80 feet from the shack then a 3 foot piece of coax from the remote tuner to the unun of the antenna. Where is the best place for my choke....on the 3 foot section between the tuner and the unun or at the remote tuners feed point or in the shack at the radio? I currently use a choke between the tuner and the unun but I also put a palomar ferrite donut with 9 turns at the feed point of the tuner. The tuner and unun are grounded with 2, 8 foot copper grounds and im only 7 feet above sea level here on the east coast. Am I canceling out my counterpoise created by my coax run? I have no rf but the counterpoise part you mentioned with my coax I think I need to help out. Seeing this video leaves me in doubt I have it set up correctly. My inverted v peaks up about 40 feet above ground btw. Thanks
Hi from Turkey..I am just a sw listener..I made a 53 feet long wire..Should I need an 9.1 unun even for only recieving,listenin shorrwsve radio..so If I dont use it, what kind of problems will I have? Please help me..good evening from izmir Turkey😊
For a single frequency, you can tune the antenna to be resonance at 915MHz. The length for a full wave vertically polarize antenna would be equal to 936 / frequency in MHz or 936 / 915 = 1.02 feet or 12.2 inches. I hope this helps...
Good idea and I love learning from this video but the trembling of your hands made it awful. Please made your next video to be stable without shaking hands so that it can be viewed comfortably. Thank you. I am following you.
Most of these setups seems to assume your receiver can accept a coax. Mine (vintage receiver) just has two holes, one for antenna and one for ground. What then?
RF choke is taking your free possible energy and making you pay the power company for power. Wow great video to learn what not to do. Unless you like paying extra money for electricity. Then follow this guy.
These types of chokes work very Well and add protection for you and your equipment. If you have ever received RF burns from your equipment this is you best solution.....Those of you who have used end feed antenna and experienced this know what I am talking about.
