Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old February 2nd 04, 01:25 AM
Dave Shrader
 
Posts: n/a
Default

Diversity DF???

ps wrote:

I have a photo of an antenna at the Long Marine Labs in Santa Cruz,
California. The view in the photo is to the n-n-west. I'm curious about
what looks like some sort of array of rectangular elements. Is this an
antenna, what type or frequency range? The length of the sides is about
1 meter. I can't post a binary on the newsgroup so the image is
temporarily at this url. http://www.cyberplasm.com/temp/ant_500.jpg


  #2   Report Post  
Old February 2nd 04, 02:53 AM
Stephen Cowell
 
Posts: n/a
Default


"Dave Shrader" wrote in message
news:cGhTb.201548$I06.2220041@attbi_s01...
Diversity DF???


Could be a big loop Yagi...the wide-angle
lens has distorted the horizontal axis. Are
the loops lined up, or are they at staggered
heights?
__
Steve
KI5YG/EA
..




ps wrote:

I have a photo of an antenna at the Long Marine Labs in Santa Cruz,
California. The view in the photo is to the n-n-west. I'm curious about
what looks like some sort of array of rectangular elements. Is this an
antenna, what type or frequency range? The length of the sides is about
1 meter. I can't post a binary on the newsgroup so the image is
temporarily at this url. http://www.cyberplasm.com/temp/ant_500.jpg




  #3   Report Post  
Old February 2nd 04, 03:37 AM
ps
 
Posts: n/a
Default

Stephen Cowell wrote:
"Dave Shrader" wrote in message
news:cGhTb.201548$I06.2220041@attbi_s01...

Diversity DF???



Could be a big loop Yagi...the wide-angle
lens has distorted the horizontal axis. Are
the loops lined up, or are they at staggered
heights?


Its not a wide angle lens. They are at varying heights. From the
responses I guess this must be some sort of tracking system for marine
mammal research. Whales, seals, etc. Don't know for sure.


  #4   Report Post  
Old February 2nd 04, 05:14 AM
Jack Painter
 
Posts: n/a
Default

"ps" wrote
Its not a wide angle lens. They are at varying heights. From the
responses I guess this must be some sort of tracking system for marine
mammal research. Whales, seals, etc. Don't know for sure.


Probably vhf, but the clumsiest looking RDF setup I ever saw.

From http://www.ucsc.edu/currents/01-02/10-08/otters.html
sea otters join conservation research project at Long Marine Lab

About 40 wild sea otters have been outfitted with radio transmitters and
temperature monitors.


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
Inverted ground plane antenna: compared with normal GP and low dipole. Serge Stroobandt, ON4BAA Antenna 8 February 24th 11 10:22 PM
Mobile Ant L match ? Henry Kolesnik Antenna 14 January 20th 04 04:08 AM
Poor quality low + High TV channels? How much dB in Preamp? lbbs Antenna 16 December 13th 03 03:01 PM
QST Article: An Easy to Build, Dual-Band Collinear Antenna Serge Stroobandt, ON4BAA Antenna 12 October 16th 03 07:44 PM


All times are GMT +1. The time now is 11:01 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017