- 70 cm Power splitter
- G8EUX
A simple accurate power splitter for the 70cm uplink to Oscar 13
[ Hits: 1803 | Votes: 2 | Rating: 1 ]
- 75 ohm to 50 ohm Transformers
Transmission Line 75 ohm to 50 ohm Transformers
[ Hits: 769 | Votes: 3 | Rating: 3 ]
- A Cheap & Easy 2.4GHz Feed
The KI7CX 2.4 GHz Cheap & Easy antenna/feed
[ Hits: 443 | Votes: 1 | Rating: 5 ]
- A T-Match ATU
pop
An homebrew antenna tuner project
[ Hits: 31521 | Votes: 22 | Rating: 5.91 ]
- AA3RL Transmission Line Calculator
Excel spreasheet that calculate virtually every transmission line parameter that one may need Include Length ...
[ Hits: 5336 | Votes: 16 | Rating: 6.88 ]
- Actual Antenna SWR
Easy for calculate formula which could be a wake up call for you The SWR ...
[ Hits: 4181 | Votes: 5 | Rating: 4.8 ]
- All About Ham Radio ladder-line
ladder line is great extremely low loss even at high SWR However many hams refuse ...
[ Hits: 625 | Votes: 2 | Rating: 5 ]
- All About Ham Radio Ladderline
Ladder Line Myths, Line Types, Spacing and Impedance, Length by KV5R
[ Hits: 1152 | Votes: 2 | Rating: 9 ]
- Anatomy of an Antenna Feedline
How to setup a proper antenna feed line with a particular attention to RFI by ...
[ Hits: 549 | Votes: 0 | Rating: 0 ]
- Antenna Cable Loss and SWR
Calculate Cable Loss from SWR and reverse Text file with only two simply formulas ...
[ Hits: 2193 | Votes: 4 | Rating: 4 ]
- Antenna current meter
How to measure antenna feed balanced lines currents
[ Hits: 758 | Votes: 3 | Rating: 8.67 ]
- Antenna feed impedance
Article on antenna feed impedance and the importance of matching RF andtennas to feeders including ...
[ Hits: 431 | Votes: 1 | Rating: 10 ]
- Antenna Feed Lines for Portable Use
Why twinlead isn't necessarily a low loss feed line.
[ Hits: 1534 | Votes: 2 | Rating: 10 ]
- Antenna Feeders
Different types of feeders, SWR and matching
[ Hits: 494 | Votes: 1 | Rating: 2 ]
- Antenna Transmatch Tips
Tips on tuning antennas using Antenna Tuning Units also called ATU This article explains the ...
[ Hits: 3313 | Votes: 5 | Rating: 6.4 ]
- Antenna Tuning
Tuning mobile and base antennas, measuring SWR.
[ Hits: 6633 | Votes: 3 | Rating: 5 ]
- ARRL - About Feed Lines
- ARRL
The feed line also called the transmission line is the RF power conduit between your ...
[ Hits: 88 | Votes: 2 | Rating: 6.5 ]
- Automatic Band Decoders
To build a Band Decoder to drive our remote relays we need to supply the ...
[ Hits: 1205 | Votes: 1 | Rating: 2 ]
- Balanced Self Matching Feed Line System
KE4UYP designed this Balanced Self Matching Feed Line System for people who want the very ...
[ Hits: 1345 | Votes: 0 | Rating: 0 ]
- Band Filters
Experience of band filters, for a contest multi operator enviroenment
[ Hits: 4073 | Votes: 6 | Rating: 7.5 ]
- Better Feedline Loss Measurements with Antenna Analyzers
Various publications through the years have shown how the SWR measured on a shorted or ...
[ Hits: 1924 | Votes: 2 | Rating: 10 ]
- Build An LF Antenna Analyzer
A Portable Low Frequency Antenna Analyzer For those of us who like to play with ...
[ Hits: 4567 | Votes: 2 | Rating: 5 ]
- Center feed insulator
- KC8AON
A center antenna insulator with feedline strain relief
[ Hits: 1776 | Votes: 1 | Rating: 9 ]
- Choosing Feed Lines
Choosing the right feed line for your antennas is a critical decision to your station ...
[ Hits: 696 | Votes: 0 | Rating: 0 ]
- Coax Cable Loss
Table representing loss of Coax Cables in db per 100ft.
[ Hits: 2231 | Votes: 4 | Rating: 4.75 ]
- Coax cable loss table
Coaxial cable loss in db per 100 ft.
[ Hits: 4494 | Votes: 17 | Rating: 7.68 ]
- Coax Cable Specifications
Coax cables, pictures and specifications
[ Hits: 2665 | Votes: 6 | Rating: 6.83 ]
- Coax cables specifications
Useful data-sheet on RG coax cables compiled by NA5N
[ Hits: 2189 | Votes: 2 | Rating: 5.5 ]
- Coax Two Antenna Matching Network
50 Ohm Coax Antenna Power Splitter and Matching Network
[ Hits: 401 | Votes: 2 | Rating: 9 ]
- Coaxial feeder or RF coax cable
An overview of coax cable often called coaxial feeder or RF cable used to feed ...
[ Hits: 648 | Votes: 3 | Rating: 3.67 ]
- Coaxial Transmitting Chokes
Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC
[ Hits: 1103 | Votes: 0 | Rating: 0 ]
- Common mode currents
Common mode currents can flow in all sorts of systems not just antenna feed lines ...
[ Hits: 316 | Votes: 1 | Rating: 8 ]
- Comparator-based RF switch
This is a concept paper not a constuction article There are too many variables to ...
[ Hits: 783 | Votes: 1 | Rating: 5 ]
- Conventional Use of Transmission Line
ordinary transmission line theory
[ Hits: 325 | Votes: 0 | Rating: 0 ]
- Detuning Towers
The goal of detuning is not to avoid resonance but rather to minimize re radiation ...
[ Hits: 815 | Votes: 1 | Rating: 10 ]
- Do You Need an Antenna Tuner
Maybe yes maybe no It all depends on the type of antenna and feed line ...
[ Hits: 22959 | Votes: 12 | Rating: 4.58 ]
- ERP Estimator
Calculate online ERP in dB and dBi given PWR Frequency Coax lenght and type and ...
[ Hits: 1668 | Votes: 5 | Rating: 3.8 ]
- Feed antenna through closed window
A system to lay the antenna cable through a closed window by OE1VFW
[ Hits: 1014 | Votes: 0 | Rating: 0 ]
- Feed Line Currents for Neophytes
This paper discusses the sources of feed line currents and the methods used to control ...
[ Hits: 343 | Votes: 0 | Rating: 0 ]
- Feeder Radiation
Connecting centre fed antennas dipoles yagis rhombics loops to coaxial cable unless care is taken ...
[ Hits: 1830 | Votes: 4 | Rating: 8 ]
- Feeder types
Article descrive the different types including coax and open-wire feeder and waveguide.
[ Hits: 337 | Votes: 0 | Rating: 0 ]
- Feeding an End-Fed Antenna
End Fed antennas are NOT balanced systems but neither are verticals ground planes discones windoms ...
[ Hits: 21459 | Votes: 22 | Rating: 7.33 ]
- Feeding the Beast
Transferring Radio Frequency Energy from Your Transmitter to Your Antenna by Don Keith N4KC ...
[ Hits: 523 | Votes: 1 | Rating: 10 ]
- Ground Problems
Collection of articles about ground systems
[ Hits: 1267 | Votes: 2 | Rating: 8.5 ]
- HF Antenna Switch
The purpose of this remote antenna switch was to be able to select between four ...
[ Hits: 955 | Votes: 0 | Rating: 0 ]
- Idiot's guide to coaxial cable
- pcs-electronics
A very beginner s guide to coax cables Characteristics detailed comparison of typical coaxial cables ...
[ Hits: 21881 | Votes: 28 | Rating: 5.68 ]
- Inductance of Twin Lead
- technick.net
Calculate the inductance of twin lead online
[ Hits: 344 | Votes: 1 | Rating: 6 ]
- LA6PB's split dipole
A new method of feeding a dipole with toroids.
[ Hits: 4118 | Votes: 4 | Rating: 9.25 ]
- Let's talk transmission lines
Don't neglect one of the most important parts of your station!
[ Hits: 1061 | Votes: 3 | Rating: 9 ]
- Line Isolator System
A system view of the line isolator
[ Hits: 1683 | Votes: 1 | Rating: 10 ]
- Line Loss Calculator
- CO8TW
Types of coax cable with rf attenuator calculator line loss calculator form includes an antenna ...
[ Hits: 879 | Votes: 3 | Rating: 6.67 ]
- Low loss Japanese coaxial cable
5D FB 8D FB 10D FB cables offer very low attenuation comparable to that of ...
[ Hits: 989 | Votes: 2 | Rating: 9 ]
- Magic T combiners splitters
The magic T combiner is a very useful device It can provide equal voltages equal ...
[ Hits: 1321 | Votes: 2 | Rating: 8.5 ]
- Making a half wave coax cable
How to make a half l or quarter l coax cable for a specific frequency ...
[ Hits: 1428 | Votes: 2 | Rating: 5.5 ]
- Measuring Cable Loss
Improving measurement accuracy when
low-power analyzers are used.
[ Hits: 859 | Votes: 2 | Rating: 7.5 ]
- Preventing Feedline Radiation
How to handle feedline radiation issues
[ Hits: 369 | Votes: 0 | Rating: 0 ]
- Remote Control Antenna Switch
The Remote Control Antenna Switch consists of two circuit boards The control unit and the ...
[ Hits: 1152 | Votes: 0 | Rating: 0 ]
- RF Coaxial Connectors
RF coax ial connectors are a vital link in the radio spectrum Coax connectors are ...
[ Hits: 4338 | Votes: 0 | Rating: 0 ]
- RF Transmission Line Loss Calculator
This calculator computes the matched line loss for a transmission line using a model calibrated ...
[ Hits: 2508 | Votes: 18 | Rating: 3.94 ]
- RF Transmission Line Loss Calculator
This calculator computes the matched line loss for a transmission line using a model calibrated ...
[ Hits: 579 | Votes: 2 | Rating: 1 ]
- Rolling your own balanced feed lines
An article by VE1VQ that illustrate how to home made a balanced feed line ...
[ Hits: 1884 | Votes: 1 | Rating: 10 ]
- Setting the SWR of Your Antenna
SWR standing wave ratio is a measurement of how efficiently your antenna system will radiate ...
[ Hits: 1253 | Votes: 0 | Rating: 0 ]
- Single Coil Z Match
Single Coil Z Match, circuit Diagram and homebrewing notes
[ Hits: 1321 | Votes: 6 | Rating: 8.33 ]
- SWR Calculator
BesserNet Reflectometer is a fun SWR calculator and simulator Java applet
[ Hits: 4093 | Votes: 24 | Rating: 4.6 ]
- SWR: Maximum allowable VSWR
VSWR voltage standing wave ratio represents the degree with which an antenna is matched to ...
[ Hits: 1242 | Votes: 3 | Rating: 3.33 ]
- T-Match Construction
The T Match with its balanced feed point is one method of feeding a Balanced ...
[ Hits: 767 | Votes: 0 | Rating: 0 ]
- The Clemens Match by W9ERN
Balanced feed with coaxial line by John F. Clemens W9ERN
[ Hits: 756 | Votes: 2 | Rating: 4.5 ]
- The Coaxial Line
Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses
[ Hits: 888 | Votes: 0 | Rating: 0 ]
- The DK7ZB-Match for Yagis
Simple easy to built match developed in 1995 for Yagis with resistitive loads of 12 ...
[ Hits: 3637 | Votes: 8 | Rating: 6.38 ]
- The Ladder line
Myths and information about ladder line by KV5R
[ Hits: 464 | Votes: 0 | Rating: 0 ]
- The quarter wave transformer
A transient analysis of an inpedance transforming device, by W9DMK, in pdf format
[ Hits: 1007 | Votes: 1 | Rating: 1 ]
- The simplest phased array feed system that works
How to calculate "phasing line" lengths that actually work.
[ Hits: 2187 | Votes: 4 | Rating: 6.75 ]
- The Ultimate transmatch
Usage and benefits of transmatch A pdf document from a QST article made available for ...
[ Hits: 16651 | Votes: 11 | Rating: 5.64 ]
- To transform ot not to transform - Feed Lines
- KG4ZNC
Transmission lines have many uses other than simply transferring RF power from one point to ...
[ Hits: 137 | Votes: 0 | Rating: 0 ]
- Transmission line calculator
A transmission line caculator Java applet that can be run on your computer or by ...
[ Hits: 721 | Votes: 4 | Rating: 3 ]
- Transmission line calculator
A windows impedance calculator software by VK3UM
[ Hits: 1211 | Votes: 4 | Rating: 3.75 ]
- Transmission Lines
Whenever you choose a coax feedline the frequency of operation is a very important consideration ...
[ Hits: 1276 | Votes: 0 | Rating: 0 ]
- Transmission Lines
About feed lines parallel lines and coaxial lines notes on impedance SWR Baluns velocity factor ...
[ Hits: 605 | Votes: 1 | Rating: 8 ]
- Transmission lines for dummies
Myths and basic truths on transmission lines
[ Hits: 1429 | Votes: 1 | Rating: 10 ]
- Transmitting Line Condition vs. SWR Table
One another useful Table for the HAM's practice.
[ Hits: 1289 | Votes: 7 | Rating: 4 ]
- Twin Feed experiment
Experimenting a low impedance feedline by G3TXQ
[ Hits: 344 | Votes: 0 | Rating: 0 ]
- Using Delta Matching on HF Beams
Using delta match with HF antennas design
[ Hits: 5668 | Votes: 5 | Rating: 3 ]
- Verticals. Ground systems and some history
Article gives a good overview of the basics and reflects the accepted wisdom from BC ...
[ Hits: 1628 | Votes: 1 | Rating: 10 ]
- Where Does the Power Go
- W5DXP
An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line
[ Hits: 741 | Votes: 3 | Rating: 10 ]
- Why good Antennas need good Coax cable
- Bonito
The importance of an efficient antenna feed line that can minimize the disturbing noise for ...
[ Hits: 462 | Votes: 1 | Rating: 10 ]