Home Menu

Menu


RadioBanter » rec.radio.amateur » Homebrew > Long Range Wireless Network
 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #10   Report Post  
Old October 18th 07, 05:04 AM posted to rec.radio.amateur.homebrew
external usenet poster
  
First recorded activity by RadioBanter: Jun 2006
Posts: 487
Default Long Range Wireless Network
wrote:
Just to chime in on this topic, I think some incorrect information was
passed along regarding legality of transmission power - the FCC does
in fact limit unlicensed maximum transmission wattage on the 2.4Ghz
range, however the use of high gain antennas is NOT illegal. You can
use extremely high gain directional antennas to achieve links over a
20+ mile LOS link, and still be within legal limits for unlicensed
operation. Think of it as using as talking thru a funnel - all it is
doing is using that same power more efficiently and more focused. Now
if you are talking about running the signal thru and actual signal
amplifier, then yes, that would be illegal.

Unfortunately, this is also incorrect. The limit is for EIRP. The more focused
the beam, the higher the EIRP.

The exact limit the U.S. is 1 watt EIRP for mobile devices and 4 watts
EIRP for fixed (point to point) links. That's a combination of transmiter
power plus antenna gain plus feed line loss.

Ham radio is limited to transmitter output power, which is quite different.

It could be worse, the limit here is 100mW EIRP.

Geoff.






--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM
IL Voice: (07)-7424-1667 U.S. Voice: 1-215-821-1838
Visit my 'blog at http://geoffstechno.livejournal.com/
Reply With QuoteReply With Quote
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes
Threaded Mode Threaded Mode

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
Long range rural wireless high speed data options... Day Brown Homebrew 19 March 29th 07 02:16 AM
Securty missalany, wireless network DX ... Max Power Shortwave 6 August 19th 05 06:44 AM
problem with wireless bridge in workshop to home network I'm NOT DON General 4 June 4th 05 08:24 AM
Computer Wireless Network Interferance Tom Beatty Shortwave 2 November 11th 04 09:55 PM
Wireless network Lonnie Antenna 3 March 30th 04 10:48 PM


All times are GMT +1. The time now is 01:41 AM.

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"

 

Contact Us RadioBanter forum home Privacy Statement
Copyright © 2017