I have been working with NEC-2 modeling arrays of K9AY receiving loops, with the thought that if end-fire or broadside arrays of these things could be made to work well, it would be a neat alternativ
At 09:34 AM 11/14/03 -0600, K9AY wrote: Thanks for the nice compliment, Guy I'll try to flesh out these notes with some plots and put them in the TECH NOTES section of www.aytechnologies.com in a wee
At 03:14 PM 10/18/03 -0400, you wrote: OK, I'm a newbie to the group. I did search the archives first, tho. Unfortunately, you came to the wrong mailing list -- this one is intended for antenna model
LLNL has reduced the price for an academic/non-commercial license for NEC-4 to $250 (not exactly chump change, but a step in the right direction...) Details at http://www.llnl.gov/IPandC/technology/s
At 09:51 PM 10/29/03 +0100, you wrote: Pete, I think there were export restrictions on NEC4 once. Does anybody know if this is still the case? I don't think that is still the case. The web site makes
Which raises again the question of using stacked dipoles for an NVIS antenna, with the upper one fed and the lower one used as a reflector. Hypothetically, wouldn't that improve the loss situation, i
To be a bit more specific, I think the biggest problem is knowing the R,L,and C of each trap, as well as accounting for their physical length as part of the element. I don't believe that modeling a c
I'm not sure how much of the context was on the reflector, so let me just add a little. The same model, with NEC-2 and Sommerfeld-Norton ground, shows a VERY different result. Instead of peak gain be
construction "The MFJ" probably needs some further definition, too. From what I understand, the 259B is a quantum leap over its predecessor. I have the Autek RF-1 and find it very handy because of it
I would like to model a Force 12 EF-240S. I wonder if it would be reasonable to do so using lumped inductive loads in the elements instead of the linear loading, adjusting the elements by cut-and-try
Are these FCC graphs web-available somewhere? I would be intrigued to know what the local geology (karst - limestone holy and cracked like swiss cheese, under soil of varying depth) produces in the w
Unfortunately, yes. Months pass between postings. I believe there is a NEC-list somewhere that is more active, though intended priomarily for professionals. 73, Pete N4ZR Contesting is! The World Con
I am attempting to model a shunt-fed tower for 160 meters. The tower is 97 feet tall and has three yagis on it, for a total of about 104 feet, of which 6 is tubing mast. I have tried the shunt feed a
Turns out that my problem with the shunt feed model was TOO MANY segments per wire, which is one I hadn't seen before. No warnings from EZNEC, but once I let the program segment the wires itself, the
Discovered that my problem wasn't too many segments but (perhaps) misalignment between them. Thanks to K3NA and K4SB for pointing out this issue. Going to one segment per foot per N6WG's suggestion p
I'm trying to translate the notation of Laplace transforms in a .ant file to the input format used in EZNEC. Purpose is to transfer a model of a trapped triband yagi to EZNEC. My problem is that I do
I am working with models of the Force 12 C-3, trying to model stacks and their potential interaction with guy wires and wire low-band arrays. The models I'm using include a simplified monotaper model
This is intended for anyone who has tried to download terrain data from USGS to use with HFTA, only to discover that several aspects of the downloading process have changed. N6BV has just posted an a
This is from the USGS site and seems to address your download issue: If recently updated to Windows XP - Service Pack 2 -- Make sure the enable download is checked in the internet security settings T
That says it all - I am still getting some sort of script error every time I try to define an area to download. I have reported this to USGS's contractor, and have not even gotten an acknowledgement