Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old February 19th 07, 01:06 AM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 173
Default Radiation Pattern Measurements



I have begun a project to try to record antenna radiation patterns of my
antenna, using NOAA polar orbiting satellites as the illuminator. I am
just starting to get data that shows the idea is feasible. The antenna
constructed for 137 MHz, which is the satellite frequency. The received
signal strength is recorded from the DC in the IF part of the receiver, so
that is an S-Meter reading.
So far, I am able to get Excel to grind out "patterns" as a function of
Time. When I get more precise, I'll relate Angle to Time so more
meaningful plots can be drawn.

It is likely that this method of recording real radiation patterns has
been done by someone, somewhere. I am now trying to understand how I can
correct the data to account for the path loss, which can be as high as 12
dB.

My question is, does anyone know of anyone who has already done the math
for supporting data acquisition like this "satellite illuminated pattern
range". I'm running short on brain power.

Jerry


Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Electromagnetic Radiation N9OGL General 31 March 1st 06 03:42 PM
Electromagnetic Radiation N9OGL Policy 32 March 1st 06 03:42 PM
Hexa-beam radiation pattern ? Thierry Antenna 0 July 18th 05 06:16 PM
FCC: Broadband Power Line Systems Paul Policy 0 January 10th 05 06:41 PM
Cardiod radiation pattern - 70 cm phased vertical dipoles Ray Gaschk Antenna 3 February 21st 04 01:26 AM


All times are GMT +1. The time now is 12:41 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017