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As a new Ham I am continually amazed about the knowledge and expertise of the Ham community. A few months ago I didn't know a J pole from a telephone pole. Anyway when I saw the ingenious design of this unit I purchase it on the spot as my first antenna for my 50 watt base unit install at home for the 70cm and 2 meter band use. It transmits and receives perfectly. Very low SWR and great range. That 239 connector is precisely placed by the designer for correct tuning. Also when I connect it to my police scanner it comes alive with signals I never heard before. It still cracks me up that it is plumbing copper but it is electrically perfect and durable. Will also work in an Attic installation. KB9VBR is the man!
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I am railfan and wanted to be able to pull in railroad traffic from my home on my scanner. Up until now I was only able to pick up the local short line traffic when it was near my home working the local lumber yard. I considered a lot of more expensive antenna options but was intrigued when I ran across the J pole. As a builder I am familiar with the materials used to make it. It looks like just another plumbing project. None the less, I know next to nothing about radios and antennae. I just wanted to pull in the trains from my house so I decided to give the J pole tuned for the railroad band a try. Certainly I was expecting to pull in the local short line from greater distance but I was hoping I would be able to get Union Pacific traffic from further away. Well, not only did the J pole pull in all that I was hoping it would, it exceeded my expectations. Now I receive two different short lines, Austin & Western and the Georgetown Railroad, I am also getting UP from much further away than I expected, but I am also picking up some BNSF traffic which is far enough away that I wasn't even expecting to get any of their traffic. What a pleasant surprise. All this is with the J pole in the attic. I am now wondering if I might do even better if I put it outside on a mast on the roof. Maybe I will try that a bit later. The main thing is that I couldn't be more pleased with the results. For a complete amateur with radios, this thing was super easy to set up and produced results far exceeding what I expected for an antenna at this price point. I highly recommend this antenna for railfans.Vollständige Rezension lesen
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This antenna comes ready to go and it resonates inside the band. The copper should last for many years. My reception tests showed that it is more sensitive within the band than my fiberglass vertical ground plane. However it loses that edge as you get further away from the band. But for amateur use within the band it is a great antenna. I highly recommend it for ease of installation or portable use. It is also a good permanent antenna for local repeaters. For the price it is a very good deal.
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It arrived bent at an almost 45 degree angle. I had to bend it back into shape. For the high cost of shipping, I would have expected a better method of packaging. After I purchased the antenna, I saw that other builders sell a similar product for $30 and free shipping. It is well built and it works. I bought it to replace a 1/4 wave ground plane that I built for $1 out of scrap copper wire and a connector. The 1/4 wave seems to work a little bit better but the J-pole is more durable. At a total of $50 after shipping, I feel it is a bit overpriced. The connection is done well but I question the way it is connected. Some say that the center conductor should not be connected to the stub. I would have liked to see some weatherproofing of some sort at the connection. The SWR is 1.2 to 1.4 across the 2M ham band. My home brew 1/4 wave is below 1.2 across the entire 2M band. As it seems very durable, I will probably give this to a friend to put at the top of his 100' tree on a PVC mast. In this type of set-up, the durability and simplicity outweigh the mediocre performance. Vollständige Rezension lesen
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Hand built, very rugged, solid Copper, came to me well tuned for 2 meters. SWR also looked pretty good on 70 cm. I appreciated the spec sheet, and the discussion of antenna physics included with the antenna and the offer of additional tech help. This is a great antenna at any price but it is pretty exceptional at under $40. You really can't go wrong! .
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