Log in
Register
Menu
Log in
Register
Home
What's new
Latest activity
Authors
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Miscellaneous Sections
Tech Head - The Technology Section
SDR radio, Software Defined Radio
My go at WXSAT
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Terryl" data-source="post: 1047758" data-attributes="member: 369937"><p>I have a suspicion that the mid photo noise bars you are seeing, are due to signal phase changes as the satellite passes over, as I am seeing the same thing here, and I'm in an RF dead zone, nothing around me to interfere. (except me)</p><p></p><p>The antennas we are playing with are mostly linear polarized, (horizontal, diagonal or vertical) a linear antenna can pick up a circular polarized signal but not as good as a one that is correctly polarized, when a circular polarized signal from a moving object (like a satellite) passes the center point of the linear antenna it will cause a short signal fade due to an out of phase condition, this due to the orientation of the antenna.</p><p></p><p>I have tried may differant designes for a true circular polarized omni-directional antenna but have found nothing that works good enough.</p></blockquote><p></p>
[QUOTE="Terryl, post: 1047758, member: 369937"] I have a suspicion that the mid photo noise bars you are seeing, are due to signal phase changes as the satellite passes over, as I am seeing the same thing here, and I'm in an RF dead zone, nothing around me to interfere. (except me) The antennas we are playing with are mostly linear polarized, (horizontal, diagonal or vertical) a linear antenna can pick up a circular polarized signal but not as good as a one that is correctly polarized, when a circular polarized signal from a moving object (like a satellite) passes the center point of the linear antenna it will cause a short signal fade due to an out of phase condition, this due to the orientation of the antenna. I have tried may differant designes for a true circular polarized omni-directional antenna but have found nothing that works good enough. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Miscellaneous Sections
Tech Head - The Technology Section
SDR radio, Software Defined Radio
My go at WXSAT
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top