Hello Tom It's nice to see you back on towertalk. I did a lot of modeling when I built my P40A 20m 36' boom antenna and I decided to go with four elements. I wanted less windload and weight. The four
You cannot run SO2R on a single SteppIR. -- Original Message -- From: "Barry" <w2up@mindspring.com> To: "Tom Rauch" <w8ji@contesting.com> Cc: <towertalk@contesting.com> Sent: Tuesday, June 05, 2007 7
That is pretty incredible. What kind of filtering did you use? We used this antenna in this way Multi-Two with no problems at HP1XX in ARRL DX CW. However, we took rather extreme measures using combi
You can raise the impedance of your vertical to 50 ohms by installing a hair pin coil at the base which may make you and your transmitter happier. It won't effect the antenna performance. I agree wit
I wonder if the voltage drop in your long control line is causing the problem. Does SteppIR have a spec for a 500' line? Can you try using larger wire? I had some rotators at my last station that wer
Usually I tie a rope or cable to the boom, and attach it to a pulley on the mast or higher point on the tower and then bring it back down to a come-a-long. I then remove the mounting u-bolts and tilt
The discussion on this has been very interesting and informative. Most feel the cable length is the problem due to either excessive resistance or capacitance. Larger wire would help if the problem wa
The most gain, best F/B and best SWR do not all occur with the same element settings on a yagi antenna. There is a compromise setting and you can set it for whatever is most important to you - usuall
This is a ridiculous claim. How can it be noticeably better than a 4el 10m yagi on a 16' boom or a 3 el 20m yagi (like a Hy-Gain 203BA) on a 16' boom? KK9A <snip> unfortunately, that doesn't say much
Create's website is in the towertalk archives. http://www.cd-corp.com/eng/default.htm GL, KK9A My manual is pre Internet and I cant find anything thru Google. Distributors in the UK are no help eithe
I'm not sure that you need 3 sets of guys with an 80' Rohn 45g tower. I think two sets is enough and if you wanted more strength you could upgrade to Rohn 55g. I have owned several Universal towers f
Is the new cable laying on the ground or did you run it though your conduit which could possibly have water in it? Can you connect the new and old cable together in parallel? That seems like a long r
As I understand his post, the cable runs from the control box to the antenna and never had any MOV's any anything else in between. http://lists.contesting.com/archives//html/Towertalk/2007-06/msg0020
Texas Tower's website shows a price of $289 for new Rohn 55G sections. It sounds like when the tower was first erected 17 years ago, something fell (maybe the whole tower) and it was then re-erected
Bill, I would be very concerned about using a 650' control cable for this antenna after reading about all of AH6FC's problems with a four element SteppIR and a 500' cable. You'll need the factory to
Can you move your house closer to the tower and shorten the cable run? 73, John KK9A Ok, Friday I received a new 440 foot control cable from Mike at SteppIR. In addition he prepared a 6 volt DC batte
It's been mentioned 2 dozen times in the last week. You know, nobody has commented on the capacitive impact on the stepper pulses versus cable length. N2EA Jim Jarvis, President The Morse Group, LLC
Are you using Garolite? How does the strength compare to fiberglass? John KK9A Gary, I use molded phenolic rod. This material is superior to the more common rod that is machined from flat sheet, at o
Unfortunately, Jerry (I assume he's a Fluid Motion employee) initially told him that the problem was in the power supply and not the antenna so AH6FC installed the antenna. Now it appears that he has
It would be interesting to compare the 4el SteppIR and a 5 element 10m beam with the same boom length. I think you would see a bigger difference on 10m, especially with F/B. John KK9A To: "'Bob Maser