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Re: "Projector of the Sharpest Beam of Electric Waves"
Are you referring to the two-volume set by Collin a d Zucker? Thanks. DaveD
By Dave Daniel · #81 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
The most absolutely mathematically rigorous book(s) about antennas I know of are R.E. Collin's "Antenna Theory", volumes 1 & 2. Mine are in my office at work or I'd look to see how he treats this
By Sean Turner · #80 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
The Gnu development tool suite is of very high quality. It includes FORTRAN 77, 95, C, C++, Objective C and possibly some others for a wide range of machine architectures and operating
By Reginald Beardsley · #79 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
The 4th ed of Ballanis has an extensive derivation via the method of moments. However, that is an approximation, so it is not an avenue to a proof. Lawson's ARRL monograph goes into much detail, but
By Reginald Beardsley · #78 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
Which edition of Kraus (there are three)? Thanks. DaveD
By Dave Daniel · #77 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
The article is a? reprint of the original paper that was published in 1926.??I think the point of the original article was to show discovery of this type of antenna.? ? Of course, the general
By James Amos · #76 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
For some time I have wanted to start using Gnu Octave. The last time I looked, the authors of that code considered any differences between MatLab and Octave to be a bug in Octave. It appears that
By Dave Daniel · #75 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
The OMPC referenced download links at?http://ompc.juricap.com/download, from bitbucket, are broken. Though found a github repository for OMPC: https://github.com/juricap/ompc Haven't tested since I
By jafinch78 . · #74 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
I thought there were free Fortran compilers available last I looked into (two decades back).? For some reason, I first was thinking a free Visual Studio version may allow importing and compiling,
By jafinch78 . · #73 ·
Re: "Projector of the Sharpest Beam of Electric Waves"
I also read the reproduction of the Yagi-Uda paper in QEX and was also struck by the lack of any sort of mathematical basis for the development of the antenna. There is also another paper that
By Dave Daniel · #72 ·
How do we build advertising revenue for QEX?
Including covers, the current issue is 30 pages. There are 5 ads, one of which is ARRL and doesn't count. Confronted by the removal of technical articles from QST, I requested that QEX be an
By Reginald Beardsley · #71 ·
"Projector of the Sharpest Beam of Electric Waves"
My copy of QEX came today and I was immediately drawn to the famous paper by Yagi & Uda. Though not meant in any way as a criticism, I had hoped for more mathematical rigor. I don't know if that was
By Reginald Beardsley · #70 ·
TDS784C 4ch Color 1 GHz Oscilloscope For Sale - Fully Working
I need to make some space on my bench, and for measurements as high as this will go, I usually move to a spectrum analyzer anyway. 4 channels, 1 GHz, color display. GPIB and floppy work; I didn't test
By Steve Hendrix · #69 ·
File /ReducingImdInHigh-levelMixers_QEX_2001_05,06.pdf uploaded #file-notice
The following files have been uploaded to the Files area of the [email protected] group. * /ReducingImdInHigh-levelMixers_QEX_2001_05,06.pdf (
By [email protected] Notification <noreply@...> · #68 ·
Re: Frequencies to be terminated at DBM output
Daniel, Unfortunately, your links did not work this morning. I recently developed an interest in IMD and bought a copy of: Intermodulation Distortion in Microwave and Wireless Circuits J.C. Pedro
By Reginald Beardsley · #67 ·
Frequencies to be terminated at DBM output
Hello group! Happy new year to all! In PA3CJD's site??there's a good compilation of articles from QEX and QST: www.robkalmeijer.nl ( http://www.robkalmeijer.nl/ ) -> Technic -> Electronics -> Radio
By Daniel Ricardo Perez LW1ECP · #66 ·
Re: Crystal notch filter
I have depressingly little knowledge of the subject. Just a general notion and a bunch of time playing around with an HP 8560A w/ TG and some 10 cent crystals. To the best of my recollection, the
By Reginald Beardsley · #65 ·
Crystal notch filter
Hello Group, There is a good deal of crystal knowledge here so I thought to ask this group. I am working on a crystal notch filter at 14 MHz for NPR measurements. Notch would be ideally about 1-2 kHz
By Harke Smits · #64 ·
Re: Help with old function generator
Cory, similar to many function generators of the era, Search the heathkit, Exact, Wavetek in 1970-1990 This one seems like a copy of one of those. The pulse TTL, TTL logic levels, low sinks a few
By Froggie the Gremlin · #63 ·
Help with old function generator
Hi all I inherited an old function generator (Tristat Electronics FGC001) from another ham (W7OSP SK). I know enough to be able to use it, but I have no idea what some of the knobs on here do. I
By Cory KG7BBV · #62 ·