Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old March 8th 06, 03:58 PM posted to rec.radio.shortwave
Bob Miller
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

On 7 Mar 2006 23:50:11 -0800, "RHF"
wrote:

For One and All,

QUESTION - Shortwave Listening (SWL) Antenna Tuners
- - - Do You Have An Opinion ? - - -

Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening
http://www.nyx.net/~dgrunber/tuner.ssi
- - - by - - - Daniel A. Grunberg


The same argument could be used to say, "Why 9-to-1 Baluns Aren't
Necessarily Useful for Shortwave Listening."

Bob
k5qwg

  #2   Report Post  
Old March 8th 06, 04:17 PM posted to rec.radio.shortwave
David
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

On Wed, 08 Mar 2006 14:58:45 GMT, Bob Miller
wrote:

On 7 Mar 2006 23:50:11 -0800, "RHF"
wrote:

For One and All,

QUESTION - Shortwave Listening (SWL) Antenna Tuners
- - - Do You Have An Opinion ? - - -

Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening
http://www.nyx.net/~dgrunber/tuner.ssi
- - - by - - - Daniel A. Grunberg


The same argument could be used to say, "Why 9-to-1 Baluns Aren't
Necessarily Useful for Shortwave Listening."

Bob
k5qwg

If one is a true RF professional the idea of putting a Hi Z generator
into a Low Z load is too much. The 9:1 autotransormer also puts every
part of the antenna at DC ground, thus protecting the radio's input.
Plus, it's a very elegant way to connect the wire to the shielded
cable.

  #3   Report Post  
Old March 8th 06, 06:05 PM posted to rec.radio.shortwave
Bob Miller
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

On Wed, 08 Mar 2006 15:17:18 GMT, David wrote:

On Wed, 08 Mar 2006 14:58:45 GMT, Bob Miller
wrote:

On 7 Mar 2006 23:50:11 -0800, "RHF"
wrote:

For One and All,

QUESTION - Shortwave Listening (SWL) Antenna Tuners
- - - Do You Have An Opinion ? - - -

Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening
http://www.nyx.net/~dgrunber/tuner.ssi
- - - by - - - Daniel A. Grunberg


The same argument could be used to say, "Why 9-to-1 Baluns Aren't
Necessarily Useful for Shortwave Listening."

Bob
k5qwg

If one is a true RF professional the idea of putting a Hi Z generator
into a Low Z load is too much. The 9:1 autotransormer also puts every
part of the antenna at DC ground, thus protecting the radio's input.
Plus, it's a very elegant way to connect the wire to the shielded
cable.


Still, you have that wonderfully sensitive receiver, and your balun
hasn't changed the signal to noise ratio; it's only made everthing
louder. Same argument he's using against antenna tuners :-)

bob
k5qwg

  #4   Report Post  
Old March 8th 06, 07:40 PM posted to rec.radio.shortwave
David
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

On Wed, 08 Mar 2006 17:05:33 GMT, Bob Miller
wrote:

Still, you have that wonderfully sensitive receiver, and your balun
hasn't changed the signal to noise ratio; it's only made everthing
louder. Same argument he's using against antenna tuners :-)

bob
k5qwg

It does help signal:noise. It keeps the antenna away from the house.

  #5   Report Post  
Old March 8th 06, 09:27 PM posted to rec.radio.shortwave
Bob Miller
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

On Wed, 08 Mar 2006 18:40:32 GMT, David wrote:

On Wed, 08 Mar 2006 17:05:33 GMT, Bob Miller
wrote:

Still, you have that wonderfully sensitive receiver, and your balun
hasn't changed the signal to noise ratio; it's only made everthing
louder. Same argument he's using against antenna tuners :-)

bob
k5qwg

It does help signal:noise. It keeps the antenna away from the house.


And the rest of the noise? Powerlines, atmospheric noise, heterodynes,
etcetera? And do you really think coax keeps manmade noise out?

bob
k5qwg


  #6   Report Post  
Old March 8th 06, 09:38 PM posted to rec.radio.shortwave
David
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

On Wed, 08 Mar 2006 20:27:57 GMT, Bob Miller
wrote:

On Wed, 08 Mar 2006 18:40:32 GMT, David wrote:

On Wed, 08 Mar 2006 17:05:33 GMT, Bob Miller
wrote:

Still, you have that wonderfully sensitive receiver, and your balun
hasn't changed the signal to noise ratio; it's only made everthing
louder. Same argument he's using against antenna tuners :-)

bob
k5qwg

It does help signal:noise. It keeps the antenna away from the house.


And the rest of the noise? Powerlines, atmospheric noise, heterodynes,
etcetera? And do you really think coax keeps manmade noise out?

bob
k5qwg


It keeps the noise I make out of my radio.

  #7   Report Post  
Old March 9th 06, 02:41 PM posted to rec.radio.shortwave
David
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

On 9 Mar 2006 00:48:59 -0800, wrote:

If one is a true RF professional the idea of putting a Hi Z generator
into a Low Z load is too much.


LOL...A true RF pro probably wouldn't use a random wire
in the first place.. :/
MK

I disagree.

  #8   Report Post  
Old March 9th 06, 10:42 PM posted to rec.radio.shortwave
Telamon
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

In article . com,
wrote:

If one is a true RF professional the idea of putting a Hi Z generator
into a Low Z load is too much.


LOL...A true RF pro probably wouldn't use a random wire
in the first place.. :/


They work well in a low local noise location.

A random or long wire could be a good reference antenna against a new
design.

--
Telamon
Ventura, California
  #9   Report Post  
Old March 10th 06, 12:51 AM posted to rec.radio.shortwave
Slow Code
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

Telamon wrote in
:

In article . com,
wrote:

If one is a true RF professional the idea of putting a Hi Z generator
into a Low Z load is too much.


LOL...A true RF pro probably wouldn't use a random wire
in the first place.. :/


They work well in a low local noise location.

A random or long wire could be a good reference antenna against a new
design.



And a wire is also quick & Cheap, when you need something in a hurry.

  #10   Report Post  
Old March 12th 06, 04:28 AM posted to rec.radio.shortwave
 
Posts: n/a
Default Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?

They work well in a low local noise location.

As will nearly anything.

A random or long wire could be a good reference antenna against a new
design.


To me, a random wire would be a poor reference antenna. To me, there
are basically two reference antennas. The horizontal dipole, which
would
be the reference for horizontal antennas, and the 1/4 monopole, which
would be a reference to compare against vertical antennas.
For elevated verticals, I use the 1/4 wave ground plane as the
reference
antenna.
A random wire is much too random. The antennas I use as benchmarks
all have well known and repeatable performance. All my horizontal wire
antennas are compared to the 1/2 wave dipole. BTW, not many win either,
unless they are gain antennas. As far as efficiency on a certain band,
it's
hard to beat a coax fed dipole. And thusly, it's my usual "benchmark"
antenna.
MK

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
Inverted ground plane antenna: compared with normal GP and low dipole. Serge Stroobandt, ON4BAA Antenna 8 February 24th 11 11:22 PM
For Shortwave Listening (SWL) here is a "Simpler" Horizontal Loop Antenna in the Attic using common TV type Parts RHF Shortwave 1 November 24th 05 01:33 AM
Question is 'it' a Longwire {Random Wire} Antenna -or- Inverted "L" Antenna ? RHF Shortwave 5 November 6th 05 05:52 AM
Make your own T2FD Kees Shortwave 75 July 2nd 04 07:54 AM
I wonder... mike Shortwave 8 September 5th 03 04:38 AM


All times are GMT +1. The time now is 04:56 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