I have added to the site about 7 new notes, but actually old material from AntenneX for those who do not have access to the on-line magazine (http://www.antennex.com). Some of the notes overlap those
For those interested, I have placed some notes on a rotatable extended Lazy-H at the site under the upper HF section as "A Nearly Universal Back-Up Antenna for the antenna Farm tha Has Everything Els
A number of folks have asked me over the past few months to make available some of my quad models. While I do not have an FTP file resource, I did write up a few notes on modeling quads--called for s
I have added a couple more episodes to the site entry Some Quad Models. The new ones deal with my small collection of large (>2 element) monobanders and large multi-banders. I have also added a note
I have passed along the note that seems to best summarize the ideal package for modeling real antenna situations over lumpy terrain and variegated soil to one of the companies for their long range pl
Ken Hirschberg, K6HPX, informed me of some software relevant to full situational modeling. It is presently not affordable by hams ($30K +) and may best run on large UNIX stations, but there is a site
After name requests over the last few months, I have added a page of links to commercial antenna/tower/parts manufacturers and vendors of which I have knowledge. Although my site is strictly non-comm
Recent interest in NVIS or cloud-burner antennas has led me to add some notes on modeling issues concerning these antennas to the note at my site on Cloud Burners (now dated 1-12-99) in the Lower HF
Since the latest issue of NCJ has now appeared, I have placed part 3 of the SCV series (on rectangles) at my site. Part 4 will deal with Half Squares, while Part 5 will cover double wides (open doubl
I want to thank all those who made offers of help on locating a Radiotron Designer's Handbook. Think the quest is now fulfilled. I have heard that the CDROM version is available on closeout at one so
I have been inundated with questions about RDH-4, as well as many helpful comments. Here is a compendium of comments received concerning th merits of the book and source(s). (front and end matter rem
EZNEC files are in a proprietary format, as are ELNEC files. Any version of EZNEC will read both ELNEC and EZNEC files, but ELNEC will not read EZNEC files. The advanced version of EZNEC (EZNEC Pro)
The close-spacing limitation of NEC (-2 or -4) usually is a problem only when the wires are super close or when they are of different diameters. A detuning wire/gamma of the same diameter as a guy o
Pat, The MININEC and NEC cores provide gain figures relative to isotropic for any specified azimuth and zenith angle set. In NEC, the desired pattern request is set via an RP input line or "card." Th
The EDZ with parallel line and ATU presents the ATU with a complex impedance that is dependent on the exact length of the EDZ and the exact length, Zo, and velocity factor of the line. The ATU compen
Pat, An antenna is resonant when the source/feed impedance is purely resistive, regardless of how high or low that impedance is. Hence, a dipole that is resonant on 40 meters with a low impedance wil
Pat, No, the tuner does not create anything on the antenna at all. In the case of the EDZ, there is a natural current node (null) and voltage loop (maximum) at the antenna end, but that is a function
Having searched for a single antenna that will cover all of 10-meters with roughly equal gain, F-B, and SWR, I am currently working with possible LPDA designs. Translating these designs from calculat
Since the 2nd installment of the SCV series (on Delta loops used as SCVs) has now appeared in NCJ, I have made it available on line as well at my site. It is in the "Lower Band" section of the main i
I have added a few more phases of the study to the initial monoband LPDA notes. Hope the subsequent phases of the project are useful to someone. -73- LB, W4RNL L. B. Cebik, W4RNL /\ /\ * / / / (Off)(