Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old April 23rd 06, 07:00 PM posted to rec.radio.amateur.antenna
ml
 
Posts: n/a
Default 3 beam comparason

hi

I was just wondering about how 3 antenna 'types' would compare, I can of
course pull the spec's off the manuf home pages, but wonder what a real
world interpratation would be and hope somone here might have either
used them or have some simular experience to share


a multiband log peridic and traditional multiband beam(w/or w/o traps)
and a optibeam

ofcourse there are pro's and con's of each but just wondering what
type might be 'mostly best' overall if you tried to just the playing
field as level as possible


didn't want this to be about cost per say, just overall performance, but
having said that, there sure is a big price swing on those types and I
wonder , if anyone one of those antenna types have a overall
tremendious benifit based soley on improving received signal strength to
warrent one getting it vs say another and or a cheeper one



tnx
  #2   Report Post  
Old April 24th 06, 03:29 AM posted to rec.radio.amateur.antenna
Buck
 
Posts: n/a
Default 3 beam comparason

On Sun, 23 Apr 2006 17:00:22 GMT, ml wrote:

hi

I was just wondering about how 3 antenna 'types' would compare, I can of
course pull the spec's off the manuf home pages, but wonder what a real
world interpratation would be and hope somone here might have either
used them or have some simular experience to share


a multiband log peridic and traditional multiband beam(w/or w/o traps)
and a optibeam

ofcourse there are pro's and con's of each but just wondering what
type might be 'mostly best' overall if you tried to just the playing
field as level as possible


didn't want this to be about cost per say, just overall performance, but
having said that, there sure is a big price swing on those types and I
wonder , if anyone one of those antenna types have a overall
tremendious benifit based soley on improving received signal strength to
warrent one getting it vs say another and or a cheeper one



tnx



You have asked a really broad question. A log periodic antenna will
outperform a smaller trap multiband two element beam, but probably not
a larger one, i.e. one with longer boom and many elements. You will
be as well to abide with the manufacturer's specifications until you
can pick out the specific antennas to compare.

A multiband yagi with traps can out perform a trapless multiband yagi,
by being longer and using more elements.

I don't know if there is a level playing field unless you can be more
specific.

Well known amateur radio antenna manufacturers who have been around a
while aren't likely to try to fudge the numbers as too many hams are
quick to model the antennas and respond with not so kind words faster
than the marketing department can spread their lies. I would trust
them for the sake of picking the antennas and then ask around about
how they compare.

I would be more wary of satisfied/dissatisfied users information than
manufacturers specs these days. Anyone can get lucky and because of
that love the antenna. For example, I have communicated three times
to Japan from Georgia. All three events were mobile. However, during
that same time, I had a tri-band beam up 50 feet and have never been
able to make a japanese contact with it. Therefore, one might
conclude that my mobile antenna outperforms my yagi. Of course it was
propagation and timing.

I used a wonderful trap dipole for about three months. It worked
fantastically well. Then I put a fan-style dipole up to test it. It
outperformed the trap dipole by a great deal. Until I compared it,
the trap was great, now it isn't such a great antenna any more.

This is what you are up against. Good luck.


--
73 for now
Buck
N4PGW
  #3   Report Post  
Old April 24th 06, 11:46 AM posted to rec.radio.amateur.antenna
ml
 
Posts: n/a
Default 3 beam comparason

In article ,
Buck wrote:

On Sun, 23 Apr 2006 17:00:22 GMT, ml wrote:

hi

I was just wondering about how 3 antenna 'types' would compare, I can of
course pull the spec's off the manuf home pages, but wonder what a real
world interpratation would be and hope somone here might have either
used them or have some simular experience to share


a multiband log peridic and traditional multiband beam(w/or w/o traps)
and a optibeam

ofcourse there are pro's and con's of each but just wondering what
type might be 'mostly best' overall if you tried to just the playing
field as level as possible


didn't want this to be about cost per say, just overall performance, but
having said that, there sure is a big price swing on those types and I
wonder , if anyone one of those antenna types have a overall
tremendious benifit based soley on improving received signal strength to
warrent one getting it vs say another and or a cheeper one



tnx



You have asked a really broad question. A log periodic antenna will
outperform a smaller trap multiband two element beam, but probably not
a larger one, i.e. one with longer boom and many elements. You will
be as well to abide with the manufacturer's specifications until you
can pick out the specific antennas to compare.

A multiband yagi with traps can out perform a trapless multiband yagi,
by being longer and using more elements.

I don't know if there is a level playing field unless you can be more
specific.

Well known amateur radio antenna manufacturers who have been around a
while aren't likely to try to fudge the numbers as too many hams are
quick to model the antennas and respond with not so kind words faster
than the marketing department can spread their lies. I would trust
them for the sake of picking the antennas and then ask around about
how they compare.

I would be more wary of satisfied/dissatisfied users information than
manufacturers specs these days. Anyone can get lucky and because of
that love the antenna. For example, I have communicated three times
to Japan from Georgia. All three events were mobile. However, during
that same time, I had a tri-band beam up 50 feet and have never been
able to make a japanese contact with it. Therefore, one might
conclude that my mobile antenna outperforms my yagi. Of course it was
propagation and timing.

I used a wonderful trap dipole for about three months. It worked
fantastically well. Then I put a fan-style dipole up to test it. It
outperformed the trap dipole by a great deal. Until I compared it,
the trap was great, now it isn't such a great antenna any more.

This is what you are up against. Good luck.


thanks for the responce buck, I can' make perhaps 2 comments
1. for testing pourposes naturally I would only compare antennas of
'simular' size etc etc as much as apples to apples as possible in other
areas i should have mentioned that.
Well aware that a smaller antenna typically wouldn't do as well as a
much larger in the test world ...or even real world

2. as far as trusting the spec's I do, and mention that, but i wasn't
trying to prove or disprove the manuf spec's simply wondering that if
you had all 3 antennas mounted such that they didn't interfere w/each
other and were close enough not to matter for the test and you had a 3
way switch and you averaged the results which antenna if any would
show an overwelming ''win'


tnx again
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
Ground-Level HF Beam Tuning? Brian Kelly Antenna 7 December 2nd 05 05:43 PM
Odd observation - nonresonant beam Bill Ogden Antenna 16 January 28th 05 04:03 PM
Identify beam Terry Ashland Antenna 2 June 21st 04 03:51 AM
Vee Beam info needed W5DXP Antenna 5 August 6th 03 08:39 AM
TA-33 Beam question GS Antenna 3 July 26th 03 05:09 PM


All times are GMT +1. The time now is 07:55 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