Jump to content
Main menu
Main menu
move to sidebar
hide
Navigation
Main page
Recent changes
Random page
Help about MediaWiki
SimTX Wiki
Search
Search
Appearance
Create account
Log in
Personal tools
Create account
Log in
Pages for logged out editors
learn more
Contributions
Talk
Editing
Longwire Antenna
Page
Discussion
English
Read
Edit
Edit source
View history
Tools
Tools
move to sidebar
hide
Actions
Read
Edit
Edit source
View history
General
What links here
Related changes
Special pages
Page information
Appearance
move to sidebar
hide
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
The '''longwire''' is a straight wire several wavelengths long, fed at one end. Unlike a random end-fed wire, a true longwire develops directivity along the wire direction. == Configuration == A single horizontal wire running along the azimuth, default length 21 m; a length of 0 selects two wavelengths at the operating frequency. == Characteristics == * Typical gain around 4 dBi with lobes that press toward the wire direction as the wire gets electrically longer. * Typical takeoff angle around 20 degrees. * Multi-band by nature: it presents workable (though rarely excellent) matches on many frequencies, with SWR varying between harmonics. Expect a rougher match than a resonant dipole; a tuner-style loss is reflected in the higher default feedline loss (1.2 dB). * Directional along the wire run: point the azimuth roughly toward the target. == When to use == When simulating a simple field or shortwave-listener style station with one long wire, or when multi-band capability matters more than a clean match. For a serious single band, a resonant [[Dipole Antenna]] usually wins. [[Category:Antennas]]
Summary:
Please note that all contributions to SimTX Wiki may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see
SimTX Wiki:Copyrights
for details).
Do not submit copyrighted work without permission!
Cancel
Editing help
(opens in new window)