A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Soaring
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

GPS antenna conflicts?



 
 
Thread Tools Display Modes
  #1  
Old July 4th 05, 10:41 AM
Stephen
external usenet poster
 
Posts: n/a
Default


wrote in message
ups.com...
Does anyone have experience with mounting two "mouse" GPS antennas in
close proximity of each other? Any interference issues? Specifically,
I'm thinking along the lines of two Garmin 35s, or a Garmin 35 and a
remote antenna for a Colibri, both within a few inches of each other
under an instrument panel cover.


I've had problems with two GPS receivers near each other. My problem was
with a Garmin 12XL which wouldn't work on the dash of a specific car. I
eventually realised that the car was fitted with it's own GPS receiver under
the dash.

Obviously if they are passive there shouldn't be a problem, but I see
the term "active antenna" used and I'm wondering...



It's not just active antennas that will influence each other. I don't know
much about the technical stuff so can't offer a proper explanation, but
you've only got to look at a yagi type antenna (for example a TV antenna) to
see that mounting antenna near each other has an impact. Basically each
element in the antenna is an antenna in it's own right which receives and
re-radiates the signal. In a Yagi the purpose is to increase the
directional gain, but unintentional coupling of antennas is likely to have a
detrimental effect.

Stephen


 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
I Hate Radios Ron Wanttaja Home Built 9 June 6th 05 05:39 PM
Retractable Comm Antenna Ron Wanttaja Home Built 11 September 6th 04 06:59 PM
ELT antenna -- Pitts Al MacDonald Home Built 0 July 15th 04 03:27 PM
Ext antenna connection for handheld radio Ray Andraka Owning 7 March 5th 04 01:10 PM
comm's RX antenna acepilot Home Built 5 March 3rd 04 05:34 PM


All times are GMT +1. The time now is 10:29 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 AviationBanter.
The comments are property of their posters.