LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #9   Report Post  
Old January 23rd 14, 01:07 PM
Senior Member
 
First recorded activity by RadioBanter: Jan 2011
Posts: 390
Default

Quote:
Originally Posted by Irv Finkleman View Post
Q. Is there a relationship between the efficiency of an antenna and the
received signal strength?

IRV, antenna's operates with a theory called Reciprocity, which means if it is a good receive antenna, that you should also be able to transmit with it. The limitations being the size of the wire used in the Balun - if too small, they won't handle much power.

http://en.wikipedia.org/wiki/Recipro...romagnetism%29

Also, if it is not a good transmitter antenna, it won't be a good receive antenna either. Radio waves tends to favor antenna's that are resonant.


IF that isn't enough, how much do radials contribute to the bandwidth?
Radials do not contribute to the bandwidth, either the antenna is resonant, or it is not! The radials do not resonate any power, that is the job of the antenna..


I'm never to old to learn, but I am old enough that a lot of mathematical
mumbo jumbo and Smith Charts tend to confound me!

Smith Charts are not Mumbo Jumbo - it is a representation of a conductor - coax that is coiled up - like a garden hose, so you can fit more of the conductor in one picture. The Smith Chart allows you to look inside of the garden hose and see what event is taking place at that particular point.

Thanks for any input on the matter....

Irv VE6BP
Irv,
The very best advice we can give you is to advise you to find a good amateur radio club in your neighborhood and have you join.
Look for someone more knowledgeable then yourself - regardless of their age, and have them mentor you.
A decent Amateur Radio Club will have a hamshack - a place where it's members can operate.
There - you can take your radio and hook it up to their antenna's and operate.
The only other advice I can give you is to tell you to move!

Amateur radio isn't for everyone.
It does not allow us to bend or break the rules of Physic's.
There is a certain amount of effort that has to be done in order to get your signal up in the air and be able to broadcast it to the world.

The only option I have seen that was somewhat successful was a operator that bought Hamsticks and fabricated a mount, mounted the hamsticks on his porch railing, grounded the railing and used the hamsticks on 6 and 10 meters. 10 meters only requires a 9' long antenna - quarter wave, and a dipole on 6 is 9' long.

Your transceiver is marginal at best, not a real good performer to start with and handicapping it by using a non resonant antenna is only going to impede your amateur radio hobby much past listening to the bands.
__________________
No Kings, no queens, no jacks, no long talking washer women...
 
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
Increasing Cable TV signal strength amdx Antenna 216 April 3rd 12 03:48 PM
What's Your Signal Strength? Chuck Shortwave 4 October 6th 04 10:51 PM
Signal Strength Suggestions Nickolas Antenna 4 August 30th 04 04:53 PM
APRS and signal strength.. Joel Homebrew 0 January 4th 04 11:13 PM
APRS and signal strength.. Joel Homebrew 0 January 4th 04 11:13 PM


All times are GMT +1. The time now is 06:32 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