Hello to all, I am wondering if a stack of three Log-Periodic Antennas is the way to go. At best my single tower station will have three Tri-Banders on it. Possibly a Force12 C3S around 90-60-30 feet
Friend of mine has two LPAs on separate towers and he loves them. He is also a contester. One covers 20 through 10 and has a 40 meter 2 element (shortened) beam about 10 feet above. Not sure about co
antennas. The Tennadyne antennas are good, but for some reason I can't understand they instruct people to install the baluns at the incorrect location. The result is unbalance in the antenna and sig
At 11:16 AM 6/21/2004, Keith Dutson wrote: Stacking LPAs is rare to my knowledge. The problem is in planning how far to separate them. For best 20-15-10 performance the distance should be about 33 fe
I personally like LPDAs! There are advantages and disadvantages to everything! If you are an ARRL Member, you can read about one man's story. http://www.arrl.org/members-only/tis/info/pdf/0209031.pdf
I used a Tennadyne T6 for several years with excellent results. No traps -- and little to go wrong with the antenna. Very nice antenna. But then I switched to a 3 element SteppIR and find it produces
Would you share the proper location for the balun on the Tennadynes? I thought a balun/choke belonged at the feed point, and that is at the front of the array? ...hasan, N0AN (p.s...I've had two of t
If you are talking about the T-10 or the smaller T-6, I would have to disagree with both of your comments. They are quite light and the wind loading is amazingly low. the T-10 on a 24' boom weighed 3
Comments interspersed in the text below: far get Stacking LP's is a problem because the spacing is only going to be optimal on one band. It can be done with decent results, but not like stacking a pa
In fact, the SteppIR does not need a complicated and lossy matching network. A matching network, other than a combined un-un/balun is not needed since the proper tuning naturally matches the antenna
Great concept, the SteppIR...but cost about 4x as much as the T-6. I helped put one up about two weeks ago. It works rather nicely, but looks like an accident waiting to happen. (complexity). ...hasa
When figuring the cost, you might want to consider that the T-6 is closer to the 2 element SteppIR than the three in terms of gain and F/B. One point needs to be made, especially for contesters. The
The first SteppIR has been up for 3 plus years, and has experienced no problems. I had to take my Mosley Pro57B down several times in that period to make adjustments within that same time frame. My S
Also, log periodics tend to be bigger (more elements on a given boom length) and heavier, so they require a huskier tower and rotator. A lot of them that many of us have seen actually user two towers
over the 3 element SteppIR. In return, you give up 1 - 2 dB on 20/15/10, 3 dB on 17/12 (as well as a proper match), operation on 6 meters ... as well as good F/R on 20-12. That's why I am building a
One point needs to be made, especially for contesters. The LPDA is a very low Q antenna with very wide bandwidth... the SteppIR is a high Q antenna with narrow bandwidth that is frequency agile. When
If I do, I can get any part I need from an industrial supply store if Fluidmotion (SteppIR) doesn't overnight it to me ... and replace it with a screwdriver. I hope you don't need one of the odd siz
I would not dismiss NT1Y's stack of three 4 element SteppIR's as "not a serious contest station." 73, ... Joe, K4IK _______________________________________________ See: http://www.mscomputer.com for
You obviously have never drilled out a rivet. You also do not seem to care about the need to climb your tower to do repairs on your antenna. And, finally, you must have little to no experience with c
Hogwash! The receiver front end is of far greater consequence. Jim Brown K9YC _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless We