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General |
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A
new look at the Ufer ground system -
Mr. Ufer developed the concept of concrete encased grounding
electrodes which are suitable for radio antennas |
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Antenna
Options - Survey of Antenna Characteristics and Types -
antennas mainly for TV transmitters |
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Antennas
- some basic information and resource links |
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Antennas:
critical links in the wireless signal chain -
right antennas can strengthen the chain by yielding better signal
coverage, increased S/N ratio, reduced bit error rate, and lower power
consumption all at very low cost |
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Basics
of Dual-Polarized Antennas Tutorial -
information on special antennas used in celluar networks |
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Exploring
the secrets of the Smith chart* - an indispensable tool |
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FM
Antenna Configuration vs Performance |
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Good
ground, great signals - how
to do geounding of antennas well |
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Grounding
Tips - how to ground antenna
systems |
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HAM
antenna documents and programs |
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Install
your antenna properly |
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Jim's
Notebook - all sorts of
interesting and useful antenna data, techniques, hints and such |
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Radiation
impedances of wire and rod antennas |
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Smart
Antenna Systems Tutorial - A
smart antenna system combines multiple antenna elements with a
signal-processing capability to optimize its radiation and/or
reception pattern automatically in response to the signal environment |
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The
Bunny Ears - the traditional
indoor antenna: problems and design flaws |
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Up
On The Roooof - tips for
installing FM and TV antennas to roof |
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Antenna
cabling issues |
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50
ohms versus 75 ohms in antenna cable |
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Most
Often Asked Questions About Power Splitter / Combiners |
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Putting
a Balun and a Tuner Together -
information on antenna baluns and their use |
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Quarter-Wave
Power Divider - use this to
phase two antennas together for increased gain |
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RF
BALUNs - one of the most
important components in of transmitting system is the antenna feeder
system |
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Signal
Cabling - quite often the
humble feed line is to blame if the communication does not work |
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The
purpose of a balun -
information on benefits of balusn in eadio reception |
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Transmission
Line Transformers - theory,
articles and construction details for RF transmission line
transformers |
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Antenna
building projects |
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A
J-Pole antenna for the Ramsey FM10a in GIF format -
transmitting antenna tuned for 89 MHz |
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Antenna
extension provides open-door policy -
garage door opener receiving antenna for 315 MHz |
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Balloon
or kite antenna? Why not |
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Build
a Yaki-Uda Antenna -
instructions for building nad designing 3 and 6 element yagi antennas |
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Construction
Details For A GPS Helix Antenna -
antenna for 1.5 GHz band for GPS receiver |
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DIY
GPS Antenna - antenna for 1.5
GHz band for GPS receiver |
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Down
To Earth Antennas - reception
antennas which work close to earth |
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Experiments
on Remote Receiving Loops |
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FM
Dipole for 88-108 MHz |
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Go
ATV Portable With This Simple Beam Antenna! -
a simple broadband yagi for 70-cm band |
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Long
Loopstick Antenna - to
improve AM radio reception without using a long wire or ground |
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Practical
indoor antennas for everybody -
HF foil antennas, VHF/UHF discones, wire beams, VHF/UHF rotables, tape
antennas and telescoping VHF/UHF indoor beams |
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Satellite
Antennas Hints and Kinks: Low Cost Satellite Antennas |
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Active
antennas |
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AM/FM/SW
active antenna - an active
antenna that can be used for AM, FM, and shortwave, on the shortwave
band this active antenna is comparable to a 20 to 30 foot wire antenna |
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AM/FM/SW
active antenna |
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Q
- Multiplying Loop Antenna -
active antenna for 500 kHz to 1750 kHz frequency range |
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Antenna
amplifiers |
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50
Hz - 100 MHz Wide-Band Preamp -
ampifier 17..37 dB, uses general purpose transistors |
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TV
antenna amplifier - covers
the frequencies from 40 to 900 MHz, suitable frequency rage for FM or
TV antenna amplifier |
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Medium
Wave Preamp - The tuning
voltage is variable from 1 to 12 volts and is designed to cover the
medium waveband from about 550Khz to 1650Khz |
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Antenna
baluns |
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4:1
balun for 160 to 10 meters |
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75
ohm to 300 ohm balun |
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A
Cost Effective Current-mode 1:1 Balun -
can be constructed from a length of coax and a rod typically used for
a broadcast antenna loop-stick, some electrical tape, cable ties, a
length of PVC water-pipe and some connectors |
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Baluns
and coaxial aerials - many
examples on blauns built from coaxial cable |
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Antenna
related measuring equipments |
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Antenna
Analyzer 88-960 MHz |
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Field
Strength Meter - measures
radio field strength at VHF frequencies in the range 80 - 110 MHz |
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LED
driver displays standing-wave ratio |
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Simple
Field Strength Meter - simple
and also quite sensitive, uses an ordinary digital voltmeter to
measure signal strength, works on VHF and FM bands |
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Simple
Analog Field Strength Meter -
can be used from 30 MHz to over 2 GHz |
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Other
antenna related circuits |
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6
Meter Heliax Duplexers |
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A
simple anti-static device -
circuit to help to reduce static buildup in antenna |
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Attenuator
Pads - homebrew attenuation
pads |
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Bias
Tee - Bias tees allow you to
insert DC voltages into your signal path (coax) without disrupting the
existing signal in that path, for example for feeding active antennas |
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Modify
that AM antenna - add
external antenna connector to your AM radio which does not have it |
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Simple
high-pass filter to cut off disturbing signals |
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Wideband
filter uses image parameters -
You can design various lowpass and highpass filters using image
parameters |
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2
Meter Halo Antenna |
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432
Mhz 8 Element Quagi |
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6
Meter Base-Station Dipole -
"High-Performance" |
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160
Meter short TX loop antenna |
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Six
Meter Antennas |
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A
Resource For Amateurs Facing Antenna Restrictions |
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Antenna
Calculations -
lots of neet stuff! |
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Antenna
Elmer - Lots of antenna info |
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An-Ten-Ten-nas |
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Antenna
Information Center at swl.sds.se |
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AntenneX |
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Antenna
Topics From G3YCC |
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Antenna
Software by W7EL |
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Beverage
antennas de KG4W |
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Calculate
the length of a 5/8 Wave Vertical Antenna |
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Coax
Cable Table |
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Cobwebb
Antenna 14 - 28 mhz -
by G3TPW |
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Copper
Cactus (Multi-Band J-Pole) Design
a J-Pole Antenna |
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Design
Your Own Dipoles And Inverted Vees |
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Design
Your Own Quad |
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Flamethrower
Antenna |
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Gain
of the Axial-Mode Helix Antenna |
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Gain
of an Endfire Array |
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Ground-mounted
Verticals |
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KB1GW's
Collection of Beverage Antenna Information |
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Kite
Antennas |
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Mini
Loops |
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Packet
Radio Operators Antenna Handbook |
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Summary
of experience with restricted space antennas |
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Radio
Operator's Antenna Design Handbook |
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Rhombic
Antenna Home Page |
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Rotatable
Dipoles |
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Simple
Seven Element Yagi Antenna |
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Slinky
Clandestine Dipole |
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Slot
Antenna Design |
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St.
Louis Vertical |
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Standard
G5RV Information |
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Super
J-Pole Antenna(Collinear Design) |
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Transmission
Lines and Matching Systems |
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W3LPL
on Beverages |
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W6RCA's
No-Tuner All-HF-Band Antenna |
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Why
Are Antennas Built to Look Like They Do? |
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Yagi
design program for vhf/uhf |
