Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old December 27th 07, 12:15 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 326
Default downward noise reducing ant?


Well, that is a tough situation...

On the antenna my first thought is a two element horizontal quad beam
pointed straight up.... The reflector will tend to shield the driven
from noise emanating from below... BUT, the noise being in the near
field all bets are off and you will just have to try...
You might also try a phasing noise reducer, like the MFJ 1025, etc...
Again, the noise being all around you may be impossible to reduce, but
then maybe not... Only a trial will tell...

You didn't mention the rig... Perhaps some DSP will help with reducing
noise... Also going to narrow modes like CW gasp, who does that
ancient mode? and PSK with narrow CRYSTAL filters will help...

In the end, you will likely have to team up with kindred souls and
establsih a remote radio station operated the internet as your
solution...

denny / k8do
  #2   Report Post  
Old December 28th 07, 12:05 PM posted to rec.radio.amateur.antenna
ml ml is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 225
Default downward noise reducing ant?

In article
,
Denny wrote:

Well, that is a tough situation...

On the antenna my first thought is a two element horizontal quad beam
pointed straight up.... The reflector will tend to shield the driven
from noise emanating from below... BUT, the noise being in the near
field all bets are off and you will just have to try...
You might also try a phasing noise reducer, like the MFJ 1025, etc...
Again, the noise being all around you may be impossible to reduce, but
then maybe not... Only a trial will tell...

You didn't mention the rig... Perhaps some DSP will help with reducing
noise... Also going to narrow modes like CW gasp, who does that
ancient mode? and PSK with narrow CRYSTAL filters will help...

In the end, you will likely have to team up with kindred souls and
establsih a remote radio station operated the internet as your
solution...

denny / k8do


thanks for the responce, unf i wouldn't be able to put up a quad love
to thou

I actually have a anc4 which practically never seemed to work for
anything in this case i wonder if it might currently my ant and anc4
antenna are together i wonder if i put the anc4 antenna either
further away or perhaps inside the elevator room right near the
equipment (forgot which) that might do it, also my antenna for that
right now is just some old cat 5 i ran to the roof

the idea of a remote might not be to bad since i only need it as a
receiver
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
Noise Reducing Antennas Alfred E. Newman Shortwave 22 December 12th 04 05:16 AM
Reducing effects of RF noise? Invader3K Shortwave 6 November 12th 04 10:18 AM
The downward spiral of the left continues... yojimbo Shortwave 4 October 6th 04 11:36 PM
Reducing RF noise interference? Invader3K Shortwave 0 September 14th 04 01:40 AM
Reducing microphonics W4UDX Homebrew 0 September 26th 03 01:57 AM


All times are GMT +1. The time now is 09:59 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