Kelly, Good points, all. 1) tuning noise....I thought that might have been because I didn't treat the control lead properly...ran it down a guy wire, instead of down the tower to gnd. Did it in a bli
Definitely experiencing tuning noise - the problem occurs when the antenna hunts across a major "tuning" frequency in memory, causing it to re-tune as you cross it - and that's problematic when chasi
Why would anyone be retuning the antenna??? Tune it once for the phone band and once for the CW band and forget it. Bruce _______________________________________________ See: http://www.mscomputer.co
Not if you are lucky enough to have a SteppIR, but for the other beams, sure. Two seconds of low level hash and then 1:1 VSWR, boy am I glad that I dumped my old fashioned, fixed tuned, beam. 73, Car
In the general coverage mode, the SteppIR tunes itself going from band to band or when tuning up and down a band. Mine produces an S9 hash which is not a low-level noise. Granted, I love my 3 el Step
sure. Two seconds of low level hash and then 1:1 VSWR, boy am I glad that I dumped my old fashioned, fixed tuned, beam.<< I wonder where is hash coming from. Stepping motors do not have brushes, they
I they Pulses with fast edges and ringing. Could easily have noticeable spectrum up into HF, especially since it's fairly high power, and it's coupled pretty well to the feed line (capacitance from w
they moving Good point Yuri. I have been confronted some times with that kind of phenomena, years ago now. Humidity pressure temperature, al parameters who can play. Jim had some good suggestions . A
Agreed. This is how I actually use my SteppIR. I never use the "auto-tune/general coverage mode" for reasons I stated yesterday. I typically set the frequency manually when I switch to the CW portion
I am surprised that they would live with noise generated by the drive system. There should be no capacitive coupling between windings and elements. Windings are completely enclosed. By using shielded
pretty system. It's just one of those design decisions, I suspect.. Spend years working out all the last little foibles, or get the product on the market where it accomplishes 99.99% of the ideal and
run of the mill steppers (with decent temperature ranges, etc.) are probably around $50, brand new, in big quantities. Shielded steppers with the fancy connectors are more like $500 or $1000. Fluidmo
I have know knowledge of how the system actually works, but I have an idea what people are hearing might be the system using a noise generator to measure SWR/Frequency or what ever it does in the aut
I don't think I hear noise every time my SteppIR dipole tunes - only when it is tuning across certain frequency ranges. My theory has been that received energy rectifies across the temporarily dodgy
Fluidmotion (SteppIR) do not do any rf measurement. The "automatic" mode reads the transceiver frequency from the data interface (it listens or "snoops") and then sets the element lengths from a loo
Thanks, I appreciate the information. That one little bit has increased my knowledge of the way the thing works by a tremendous amount. I had only seen photos of the element straps and reels. The nex
probably fancy time to involved. Dog That dog food can and shielded wire is just fine for a one-off solution to a particular installation. How many hours did you spend finding the right size can, cut
the time researching filter designs, trying various approaches, tuning the stubs, etc.. Figure your time at a cheap $50/hr, take the parts cost, using components purchased new from catalogs, and doub