N6GN's Pages

Recent surface wave transmission line related information

At the Pacificon 2011 Antenna Forum, I gave a presentation that included an overview of three different amateur applications for surface wave transmission line, along with a new antenna theory for understanding conventional antennas such as dipoles and monopoles as surface wave devices. All but the first of these, "A Flying Antenna" have been published as a three part series in ARRL QEX.

A Flying Antenna (published only on YouTube) a helium balloon supported, very broadband antenna made from paper producing 40+ dB gain),
A Surface Wave Transmission Line, QEX May/June 2012 (with permission ARRL)
A New Antenna Model QEX July/August 2012 (with permission ARRL), a new antenna theory that describes a dipole (or monopole) as a surface wave device.
All-Band Antenna that can provide operation from 160m through 3 cm on a single structure QEX Nov/Dec 2012 (with permission ARRL)
Letters from readers, QEX Sept/Oct 2012

Errata:
- Labels were dropped from Figure 8 of the Antenna Model article.
- Slightly clearer? Figure 10
- Figure 4D, left axis, label for SWR should go from 1 - 10 rather than 0 - 10 as was published. The right axis gives return loss in dB as an independent plot sharing a common frequency (X) axis.
  The Flying Antenna will not be published, due at least in part to the liability involved in providing construction and fabrication details of a system which is potentially dangerous or even lethal. In order to not totally lose the value of that first section, I have made a YouTube video which broadly describes the antenna and experiment and gives a demonstration of surface wave transmission line in operation.
  Here's the video of the Flying Antenna
  "A 40+ dB Gain Antenna Made From Paper"=========>
  
  Some older higher speed packet information, microwave hardware, antennas & such
  - What's the Problem with amateur packet radio? Selections from an Introductory Higher Speed Packet presentation I gave at the September 1996 ARRL/TAPR Digital Communications Conference along with some additions detailing ways to improve higher speed amateur networks.
  - ARRL Conference Papers theoretical basis and practical development of higher speed amateur radio networks.
  - On-Channel Active Repeaters
  - Old Antennas
  - Old Microwave Link (Other Old Hardware)
  - Designing a Station for the Microwave Bands A three part series I did for Ham Radio magazine just before it stopped publishing. This information is now out of print and I'm making it available here for those who otherwise would be unable to see it.
  - Inexpensive Multi-Megabaud Microwave Data Link The original 10 GHz data link from December 1989 Ham Radio Magazine and an Addendum to it.
  email to Glenn,n6gn