Believe me, I have drilled out rivets, separated seized element tubes, and waited weeks for an antenna manufacturer to do a "run" of a specially swaged element section or a bracket used only in one
Contesting is much more about experience, planning and operating skill than antennas. The SteppIR is still fairly new and that is why you don't see many serious stations using them, IMO. I think a Mo
I don't think the moving parts are a red herring at all. I am glad to hear about the reliability. Not sure what you are saying about the C-4XL regarding linear loading and helical hairpin. My only gr
difference -- Q Seems to me that depending on the antenna to perform the function of a preselector is sort of silly, in a no-holds-barred system design. If you're worried about overloading the front
I just ran a quick sweep of a 3el SteppIR model and the loss in the feedline alone due to mismatch is about 4dB at 1 mHz out and 10dB at 5 mHz out. Add to that the pattern loss and you're well over 1
LPDA is a very high Q antenna a huge difference front-end. Hi Rick, That isn't a valid reason (and I'm also not sure it is true that signal levels are "hugely" less). Virtually every receiver sold a
Compromising with a compromise on an old compromise............. Remember Joe , " In Chicago even beans do it ". Not only OT's hi hi 73 all. Jos OT ( 70yy ). -- Complexity? Sure - I'm sure that's wha
function of a design. I agree a selective antenna will help a crystal set and maybe even a really bad super-regenerative receiver design like the Knight-kit Star Roamer, but most really serious stat
Having just repaired a couple of damaged elements in my top C-3E, I can testify that separating elements that have been up as much as 9 years is no problem if you used noalox, and drilling out rivets
At 12:31 AM 6/23/2004, Joe Subich, K4IK wrote: SteppIR antennas have had far fewer problems than the linear loading and "helical hairpin" failure in C4 variants. I suspect this debate has gotten into
Could you publish the model you used, including the length and type of feedline you assumed? I'm assuming that you're talking about out-of -band mismatch loss? I just ran a quick sweep of a 3el Stepp
Mechanical problems with breakage (and apparently stretching) of the alumoweld wire in ice/wind. Similar self-detuning of the unsupported "helical hairpin" apparently due to vibration and/or thermal
and type of about out-of -band loss in the feedline at 5 mHz out. Add out-of-band loss 10dB lower products. It all adds Why does a non-issue like that matter Jim? Assuming you don't use a Knight Kit
Mostly because I'm curious about models for the SteppIR... I'm desultorily modeling phased arrays in comparison to other approaches, and the SteppIR is a good thing to compare against. ______________
I looked into this and discussed it will Mike at SteppIR. The SteppIR can possibly work on 30 meters, only because the legal power limit is 200W. Even at this power, the voltage developed is 2 or 3 t
I used a 3 element model in EZNEC... I'm pretty sure there's a model of stacked 3 el SteppIRs on my website at www.telepostinc.com/n8lp.html in the downloads section. You can delete the wires for the
Rick, My quote was "the same 7 MHz capability as a C4" Remember, that is a separately fed 40 meter rotatable dipole. 73, ... Joe, K4IK _______________________________________________ See: http://www.
Complexity? I would think putting up 4L monobanders, on 10, 12, 15, 17, and 20m, and 1 6L on 6m would be more complex. You would need 2 or more towers, rotors, multiple feedlines etc. Cost? add all t
problem's... No offense, but even a MFJ antenna will last a year. :-) _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather S
At 08:33 PM 6/25/04 -0400, Tom Rauch wrote: I beg to differ! I was used to HyGain antennas made in Lincoln for most of my life and was a wee bit skeptical about buying an "MFJ" HyGain 4 element 6 met