The N7WS repository. Files that may be of interest to radio amateurs and other electronics enthusiasts.
Thanks to Danny Richardson, K6MHE, for hosting this repository.
Disclaimer: All of the files, papers, application notes and software contained herein are copyrighted by their respective authors. They are offered for "fair use" educational or research purposes only. Any distribution for other purposes without the copyright holder's written permission is strictly prohibited.The format is as follows: A title is given and a few words of description follow along with the file format and size.
1. Notes on Modeling Short Inductively Loaded Antennas A paper I put together. The title pretty much says it all. (100 KB HTML)
2. Notes on Modeling Short Inductively Loaded Antennas Same paper, different format. (310 KB PDF) 3. Accompaning antenna model files (105 KB ZIP)4. Optimum Loading of Short Whip Antennas Paper by Robert C. Hansen referenced in Notes on Modeling Short Inductively Loaded Antennas. (1.4 MB PDF)
5. Split-Band Speech Processor A copy of my article that was published in the September 1979 issue of Ham Radio Magazine. (500 KB PDF)
6. Noise Blanker Design A copy of my article that was published in the November 1977 issue of Ham Radio Magazine. This circuit was also published in several editions of Bill Orr's Radio Handbook. (270 KB PDF)
7. Measurement of Complex Impedance 1 to 1000 MHz H-P Application Note 77-3. The definitive reference for using the HP 8405 Vector Voltmeter for impedance measurements. (14 MB PDF)
8. Partial datasheet for the HP-11549 Some users of the HP-8405 have need for this. (64 KB PDF)
9. Reflectometer Measurements - Revisited Anritsu (Wiltron to us old guys) paper that describes the pitfalls and error sources in network analyzer measurements. If you think it's easy---think again. (Link to 500 KB PDF)
10. Balanced Transmission Lines in Current Amateur Practice A copy of my article published in the ARRL Antenna Compendium, Volume 6. (66 KB PDF)
11. Ladder Line Update My letter to "The Wireman" with further thoughts and observations about ladderline. (39 KB PDF) Added 9/24/2006
12. Computation of Impedance and Efficiency of Transmission Line with High Standing-Wave Ratio AIEE Paper by Macalpine that is the basis for similar material in the standard reference, ITT Reference Data for Radio Engineers. (590 KB PDF)
13. Radio Frequency Performance of Electroplated Finishes A copy of an I.R.E.E. Australia paper by A. M. Fowler.---Beauty is only skin deep (1.8 MB PDF)
14. Fowler Errata Roy Lewallen, W7EL, has discovered some errors in the Fowler electroplating paper (Note 14 above) (14 KB PDF)
15. Parasitic Suppressors Revisited Back by popular demand after a nine year hiatus. (16 KB)