Found a good "Antennas" link? Let Us Know!
Antenna and Radio Integration for Mobile Platforms:
The performance of antennas on a small mobile platform is heavily dominated by the effect of radiating currents excited in the platform’s chassis – the PCB and other conducting hardware connected to it. As well as providing radiation from the handset these fields create limits on the designer’s ability to control SAR, hand and head effects and hearing aid interference. This paper shows how the adoption of balanced antennas can create new possibilities for antenna performance and can also create new possibilities for the integration of RF circuits into antenna structures.
Build an FM Antenna ~ A do-it-yourself project: The single most important thing that you can do to improve your reception of WSLR-LP is to use a good antenna. It's easy to build a good antenna for listening to FM radio. The design given here can be built in under half an hour if you have the parts and it works better than products from Radio Shack and elsewhere that cost over $100. This antenna works much better than most commercial powered or amplified units.
Directional or Omnidirectional Antenna? Do you need a directional antenna or an omnidirectional antenna? That question is basic for amateur radio operators, shortwave listeners and scanner operators. The answer is simple: It depends. I would like to give you a simple rule for all situations, but that is not possible. With radio antennas, the "global solution" is rarely the correct solution for all users. In this paper you will find a discussion of the issues involved so that you can make an
informed decision on the antenna type that meets most of your needs.
Adcock Antenna for HF RDF
Learn about the Adcock antenna usable on the HF bands. Some information on
building one.
[Link recovered 5/5/11]
Antennas Online tutorials
Attenuator, indestructible. Here is an attenuator good up to at
least 5 GHz, lots of attenuation, and it can't be damaged by transmitting.
[Link recovered 5/5/11]
Attenuator, pot. Quick and easy RF attenuator, from the
junk-box. [Link recovered 5/5/11]
Remote S Meter. Its nice to have a large S meter sitting on the
dashboard. [Link recovered 5/5/11]
RF Sniffer with Tone Output. No need to look at it. Just listen
to it. No tripping over stuff! [Link recovered
5/5/11]
Balloon Tracking and Recovery*
[PDF link recovered 5/5/11]
Buildings, Hunting Inside of. OK, we found the building, but
where inside is the transmitter? [PDF link recovered
5/5/11]
Comparing SuperDF* with other RDF systems. (Text & a chart).
[PDF link recovered 5/5/11]
Discussion of Propagation, Multipath, and Antennas as Related to Radio
Direction Finding Yes, its a long title, but so is the discussion! But
don't worry, its broken down into digestible pieces. [PDF
link recovered 5/5/11]
Hunting AM Signals with SuperDF*
&
Hunting an ELT on the ground
&
Setting up an ELT Hunting Team.
[PDF links recovered 5/5/11]
UK Satellite Communication Resources - From space to
satellite to modem. This website has been developed for the scientists and engineers of the
United Kingdom Satellite Communications industry interested in space,
satellite communications and modems. "We are not a
company, we are an impartial non-profit organization. This website is
intended to be a useful resource for both novices and experts alike wishing
to know more about satellite communication. This subject is huge, but we are
trying to cover it all. We monitor what our visitors are looking for and
endeavor to provide it."
The Satellite Communications Glossary
Not exactly exhaustive, but a good starting point.
The HAM Radio Operator's Antenna Handbook on the Internet
PacketRadio Networks Page. Clear drawings/photos
with explanations and instructions.
antenneX Home Page
antenneX Online, a magazine all about antennas and
amateur radio! Most of the info is subscriber - only, but they have a bunch
of good stuff for free as well.
Amateur Radio Antenna Projects
Gathered by AC6V from the internet
Antenna signal galvanic isolation
Antenna isolator circuits for preventing ground
loop problems. Build your own antenna isolation transformer.
Antenna Tips for vintage (tube)
radios.
Emergency Antennas.
American Survival Guide May, 1996. Increasing
the effectiveness of Your Comm System by Joseph J. Carr. [PDF
link recovered 5/5/11]
Field Expedient Antenna Types
Field expedient antennas serve a variety of uses. Since most are
directional they can prevent enemy interception by up to 65%. Additionally
since they are cut for a specific frequency they can improve gain. Field
expedient antennas can be used as a replacement for unserviceable antennas,
or as a substitute antenna.
FM 24-18 APPNDX M NEAR-VERTICAL SKY-WAVE CONCEPT
The standard communications techniques used in the
past will not support the widely deployed and the fast-moving formations we
intend to use to counter the modern threat. Coupling this with the problems
that can be expected in deploying multichannel LOS systems with relays to
keep up with present and future operation, high frequency (HF) radio and the
near-vertical incidence sky-wave (NVIS) mode take on new importance. High
frequency radio is quickly deployable, securable, and capable of data
transmission. It will be the first, and frequently the only, means of
communicating with fast-moving or widely separated units. It may also
provide the first long-range system to recover from a nuclear attack. With
this reliance on HF radio, communications planners, commanders, and
operators must be familiar with NVIS techniques and their applications and
shortcomings in order to provide more reliable communications.
The AN/PRC-90 Legacy
will explain to some degree the story
of the AN/PRC-68, the first synthesized U.S. military handheld radio, and
the similar but improved products that followed, all of which came out of
Magnavox in Fort Wayne, Indiana starting sometime in 1976.
AMSAT-NA.
Official site for The Radio Amateur Satellite
Corporation. (-RtB)
"Extraterrestrial Relays: Can Rocket Stations
Give Worldwide Radio Coverage?" Wireless World, October 1945, p.
305,
306,
307,
308.
FM 24-11 TACTICAL SATELLITE COMMUNICATIONS, 20 September 1990
also available at:
"FM 24-11: Tactical Satellite Communications"
FM 24-24 SIGNAL DATA REFERENCES: SIGNAL EQUIPMENT Section V.
Multichannel Satellite Communications Terminals
CHAPTER 7 - Space Systems SECTION 2 - Satellite Communications (SATCOM)
ARMY SPACE REFERENCE TEXT
U.S. Army Information Systems Engineering
Command
Automated Information Systems (AIS) Design Guidance
Satellite Communications for the Warfighter - MILSATCOM
Handbook Volume 1 - Air Force Space Command. Today's smaller military
force performs force projection missions on a global scale, against an
unpredictable threat. Warfighters depend on space-based technologies to
provide command and control communications, to employ high-technology
sensors and weapon systems, and to access the vast array of realtime
intelligence and information that provides decisive advantage for mission
success.
NTP 2 SECTION 1 (D) NAVY SUPER HIGH FREQUENCY
SATELLITE COMMUNICATIONS
Space Communications Architecture 29 August 1996. The purpose of
this document is to present the results of the Department of Defense (DoD)
Space Architect's space communications architecture development effort
completed on 29 August 1996. The full description of the process to develop
architecture alternatives and the analysis leading to the final architecture
is provided in the Space Communications Architecture Development Final
Report by the Department of Defense Space Architect.
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5/5/11
