Tim, TT: The extra 20' should improve longhaul performance on 20. If it were me, I'd go with a 3 el SteppIR yagi, and get both improved performance and lower windload. The only question would be, how
I've used rg213 pairs as house-entrance extensions of open wire line. You should expect it to be lossy, particularly if you're using it as a multi-band antenna, where vswr may be quite high on some f
In private conversation with the original poster of this topic, it was revealed that he had less than $1k in his 70' pole, installed with 7' in the ground. (10% being the rule of thumb) This was mid
I'm late to this thread, although I've been watching it spiral around for some time, I've been too busy to respond. Used to be horizontal tower motion, I think. We finally reached the point where I'm
Jake, The first difference is that pipe is rated by its ability to carry a fluid. (gas, water, etc.) As a result, it is first specified by cross sectional area... inner diameter. So, 2" pipe has a 2"
Posted on behalf of k2bmi. Jack is looking for 3 sections of 25G or 45G, which can be house-bracketed, to support a small satellite array. 2 straight sections, plus one flat top or taper top. House b
I am in the process of building my station at a new QTH and have a question about the single point ground. I will initially be installing a Steppir on a Trylon 70' tower which is about 170 feet from
Interesting thread. elements are -0- Joe wrote: If it were me, I would replace the switching supply with a simple analog/linear supply using a 24 volt transformer, a 5 Amp bridge rectifier and 2000 u
We can agree to disagree, Tony. My 3 el steppIR outperformed anything I ever had on a 16' boom, by a significant margin. While it IS true that anything with moving parts will eventually need repair,
Tom's right. What you were thinking of is telco cable, where the pairs are twisted for a distance, then twisted in the REVERSE direction for an equal distance. the result is that at audio frequencies
DUH...I'm completely wrong. What is reduced is crosstalk between pairs. Brain cramp. Sri. EA Tom's right. What you were thinking of is telco cable, where the pairs are twisted for a distance, then tw
Incidentally, this just goes to prove that man does not multi-task well. Back to work... Jim No, the net capacitance is increased. The cross talk to other pairs is reduced, but that's a parallel tran
Like ignoring solar variables, orbital dynamics, and ocean current oscillations, and blaming a trace gas (CO2) for global warming.... this is another one of those uncontrolled-variables-conclusions.
Bob... John is right...I was thinking multi-banders, not monobanders. Loose language on my part. However, in an honest A/B test, you will find that the differences between the 204ba and 4 el steppIR
Comments, on Tom's observation, Below: The Tennadyne log has two hot booms. Each boom is used as a conductor in a balanced transmission line. The elements are attached to those transmission line cond
You know, nobody has commented on the capacitive impact on the stepper pulses versus cable length. Having had significant stepper motor driven automation experience, I have concerns about it. Pulse s
AH6RH, Ron, provided the link info on the 'unusual' LPDA: "That log periodic is unusual, in the sense that it is not just a flat LP antenna like most installations. There is an LP on the top, angled
So much for our collective speculation, and So Good, for steppIR's customer support efforts: I wanted to provide an update to all that offered lot's of very thoughtful suggestions with the problems I
Quoth Robert, "...A 4 element on a 34 foot boom at the same height and optimized with YO or some other optimization program will outperform the SteppIR if both antennas are reasonably close by." I do
Whoa! We're sliding away from reality in this thread: extend a Rohn HDBX 48 into a HDBX 56??? Either Rohn or after market mfg??? There is a local ham looking for one. I don't ever remember seeing/rea