TEST,

That's the one I have, an RF Systems Magnetic Longwire Balun (MLB) ..


"RHF" schreef in bericht
oups.com...
TEST,
.
Yes - In general the more Wire the Better "Works" to a degree;
and your two Shortwave Receivers can handle more wire then most
'portable' AM/FM Shortwave Radios.
.
What you call a Longwire Antenna is more generally described as
a Random Wire Antenna; because it is not 'cut' for one frequency
and one or more Wave Lengths (WL) long.
.
For a Shorwave Listener's (SWL) Random Wire Antenna the 'preferred'
lay-out is to have a Long and Elevated Wire Antenna Element that is
connected to a Matching Transformer (near ground level) with a
Ground Rod and Ground; using a Coax Cable Feed-in-Line to the
Radio/Receivers.
.
READ - The Inverted "L" Antenna - It's 'basic' Lay-Out and Structure
The Inverted "L" {Shortwave Listerner's} Antenna - "Why-It-Works"
http://groups.yahoo.com/group/Shortw...a/message/1969

http://groups-beta.google.com/group/...b3ddbed819958d

.
For a Shortwave Listerner's (SWL) Antenna 'bending' the Antenna
Wire Element is not a problem. Using Insulated (Plastic Overed)
Wire has its Advantages and 'stranded' wire is usually easier to
work with then solid. The use of Insulators at the Wire-Ends and
other Mounting Points is a 'good' Construction Technique.
.
READ - Three "Must" Links to Read -wrt- Low Noise SWL Antenna
http://groups.yahoo.com/group/Shortw...na/message/949
.
READ - "Low Noise Shortwave Listener (SWL) Antenna
for most Radio/Receivers" [NO Antenna Tuner Required]
http://groups.yahoo.com/group/Shortw...a/message/1525
http://groups.yahoo.com/group/Shortw...a/message/1024
.
For most Shortwave Listeners (SWLs) who are considering building
and using a Low Noise Inverted "L" Antenna.
.
READ - Inverted "L' Antenna Reading List
http://groups.yahoo.com/group/Shortw...na/message/374
.
READ - The 'simple' Answer (in most cases) is the
Low Noise Inverted "L" Antenna
http://groups.yahoo.com/group/Shortw...a/message/1785
.
NOTE - When properly laid-out, arranged and constructed;
the Inverted "L" Antenna provides a relatively 'low noise'
"Omni-Directional" Shortwave Listener's (SWL) Antenna.
.
iane ~ RHF
.
All are WELCOME and "Invited to Join" the
Shortwave Listener (SWL) Antenna eGroup on YAHOO !
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Some Say: On A Clear Day You Can See Forever.
http://groups.yahoo.com/group/Shortw...na/message/502
.
I BELIEVE: On A Clear Night . . .
You Can Hear Forever and Beyond, The BEYOND !
With a Shortwave Listener SWL Antenna of your own making.
"If You Build It {SWL Antenna} You Will Hear Them !"
.
.
= = = test wrote:
Hi from the Netherlands.

Question.

I just installed a new longwire antenna. And because I always heard:
"'the more wire the better"' I have installed a sort of long U,
doubling my regular wire lenght...

One end of the U is attatched to an isolator on the first floor and
from there it goes down to the garden to another isolator, and from
there it goes back up to another isolator. The coax goes to a balun
and to my ar3000a and or Kenwood 1000r.

The antenna wires don't touch and they are plastic coated.

did I do the right thing? seems have a lot of interference....

txs

7373

Joost
.

The more wire up in the air, the more electrical energy will be generated in
it by passing radio waves or waves of any electromagnetic type. You will get
more noise, and if your radio isn't sufficiently selective you will have
more signals overlapping because they are stronger. The other side of the
coin is that you will get more of a weak signal too. The best radioes are
able to operate well with weak signals with nearby strong ones without undue
interference. A ground may help a lot. A metal rod pounded into the ground
is good - keep the length of the wire connecting the receiver to the ground
as short as possible. If you have other radioes, tv's computers etc., keep
them turned off while you listen.


~~~~~ God gives Peace not war +
"Moi" wrote in message ...
That's the one I have, an RF Systems Magnetic Longwire Balun (MLB) ..


"RHF" schreef in bericht
oups.com...
TEST,
.
Yes - In general the more Wire the Better "Works" to a degree;
and your two Shortwave Receivers can handle more wire then most
'portable' AM/FM Shortwave Radios.
.
What you call a Longwire Antenna is more generally described as
a Random Wire Antenna; because it is not 'cut' for one frequency
and one or more Wave Lengths (WL) long.
.
For a Shorwave Listener's (SWL) Random Wire Antenna the 'preferred'
lay-out is to have a Long and Elevated Wire Antenna Element that is
connected to a Matching Transformer (near ground level) with a
Ground Rod and Ground; using a Coax Cable Feed-in-Line to the
Radio/Receivers.
.
READ - The Inverted "L" Antenna - It's 'basic' Lay-Out and Structure
The Inverted "L" {Shortwave Listerner's} Antenna - "Why-It-Works"
http://groups.yahoo.com/group/Shortw...a/message/1969

http://groups-beta.google.com/group/...b3ddbed819958d

.
For a Shortwave Listerner's (SWL) Antenna 'bending' the Antenna
Wire Element is not a problem. Using Insulated (Plastic Overed)
Wire has its Advantages and 'stranded' wire is usually easier to
work with then solid. The use of Insulators at the Wire-Ends and
other Mounting Points is a 'good' Construction Technique.
.
READ - Three "Must" Links to Read -wrt- Low Noise SWL Antenna
http://groups.yahoo.com/group/Shortw...na/message/949
.
READ - "Low Noise Shortwave Listener (SWL) Antenna
for most Radio/Receivers" [NO Antenna Tuner Required]
http://groups.yahoo.com/group/Shortw...a/message/1525
http://groups.yahoo.com/group/Shortw...a/message/1024
.
For most Shortwave Listeners (SWLs) who are considering building
and using a Low Noise Inverted "L" Antenna.
.
READ - Inverted "L' Antenna Reading List
http://groups.yahoo.com/group/Shortw...na/message/374
.
READ - The 'simple' Answer (in most cases) is the
Low Noise Inverted "L" Antenna
http://groups.yahoo.com/group/Shortw...a/message/1785
.
NOTE - When properly laid-out, arranged and constructed;
the Inverted "L" Antenna provides a relatively 'low noise'
"Omni-Directional" Shortwave Listener's (SWL) Antenna.
.
iane ~ RHF
.
All are WELCOME and "Invited to Join" the
Shortwave Listener (SWL) Antenna eGroup on YAHOO !
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Some Say: On A Clear Day You Can See Forever.
http://groups.yahoo.com/group/Shortw...na/message/502
.
I BELIEVE: On A Clear Night . . .
You Can Hear Forever and Beyond, The BEYOND !
With a Shortwave Listener SWL Antenna of your own making.
"If You Build It {SWL Antenna} You Will Hear Them !"
.
.
= = = test wrote:
Hi from the Netherlands.

Question.

I just installed a new longwire antenna. And because I always heard:
"'the more wire the better"' I have installed a sort of long U,
doubling my regular wire lenght...

One end of the U is attatched to an isolator on the first floor and
from there it goes down to the garden to another isolator, and from
there it goes back up to another isolator. The coax goes to a balun
and to my ar3000a and or Kenwood 1000r.

The antenna wires don't touch and they are plastic coated.

did I do the right thing? seems have a lot of interference....

txs

7373

Joost
.

in reality the longer the wire the better.
But there is a down side the longer the wire the more you receive including
interference. you could try useing an Antenna Tuner preselector...

"RHF" wrote in message
oups.com...
TEST,
.
Yes - In general the more Wire the Better "Works" to a degree;
and your two Shortwave Receivers can handle more wire then most
'portable' AM/FM Shortwave Radios.
.
What you call a Longwire Antenna is more generally described as
a Random Wire Antenna; because it is not 'cut' for one frequency
and one or more Wave Lengths (WL) long.
.
For a Shorwave Listener's (SWL) Random Wire Antenna the 'preferred'
lay-out is to have a Long and Elevated Wire Antenna Element that is
connected to a Matching Transformer (near ground level) with a
Ground Rod and Ground; using a Coax Cable Feed-in-Line to the
Radio/Receivers.
.
READ - The Inverted "L" Antenna - It's 'basic' Lay-Out and Structure
The Inverted "L" {Shortwave Listerner's} Antenna - "Why-It-Works"
http://groups.yahoo.com/group/Shortw...a/message/1969
http://groups-beta.google.com/group/...b3ddbed819958d

.
For a Shortwave Listerner's (SWL) Antenna 'bending' the Antenna
Wire Element is not a problem. Using Insulated (Plastic Overed)
Wire has its Advantages and 'stranded' wire is usually easier to
work with then solid. The use of Insulators at the Wire-Ends and
other Mounting Points is a 'good' Construction Technique.
.
READ - Three "Must" Links to Read -wrt- Low Noise SWL Antenna
http://groups.yahoo.com/group/Shortw...na/message/949
.
READ - "Low Noise Shortwave Listener (SWL) Antenna
for most Radio/Receivers" [NO Antenna Tuner Required]
http://groups.yahoo.com/group/Shortw...a/message/1525
http://groups.yahoo.com/group/Shortw...a/message/1024
.
For most Shortwave Listeners (SWLs) who are considering building
and using a Low Noise Inverted "L" Antenna.
.
READ - Inverted "L' Antenna Reading List
http://groups.yahoo.com/group/Shortw...na/message/374
.
READ - The 'simple' Answer (in most cases) is the
Low Noise Inverted "L" Antenna
http://groups.yahoo.com/group/Shortw...a/message/1785
.
NOTE - When properly laid-out, arranged and constructed;
the Inverted "L" Antenna provides a relatively 'low noise'
"Omni-Directional" Shortwave Listener's (SWL) Antenna.
.
iane ~ RHF
.
All are WELCOME and "Invited to Join" the
Shortwave Listener (SWL) Antenna eGroup on YAHOO !
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Some Say: On A Clear Day You Can See Forever.
http://groups.yahoo.com/group/Shortw...na/message/502
.
I BELIEVE: On A Clear Night . . .
You Can Hear Forever and Beyond, The BEYOND !
With a Shortwave Listener SWL Antenna of your own making.
"If You Build It {SWL Antenna} You Will Hear Them !"
.
.
= = = test wrote:
Hi from the Netherlands.

Question.

I just installed a new longwire antenna. And because I always heard:
"'the more wire the better"' I have installed a sort of long U,
doubling my regular wire lenght...

One end of the U is attatched to an isolator on the first floor and
from there it goes down to the garden to another isolator, and from
there it goes back up to another isolator. The coax goes to a balun
and to my ar3000a and or Kenwood 1000r.

The antenna wires don't touch and they are plastic coated.

did I do the right thing? seems have a lot of interference....

txs

7373

Joost
.

"big boy now"
in reality the longer the wire the better.
But there is a down side the longer the wire the more you receive
including
interference. you could try useing an Antenna Tuner preselector...

Then how would you explain the performance equivalency of a 2Xwavelength
horizontal loop's performance to that of a 1/2wave dipole cut for same
frequency?
http://www.cebik.com/wire/horloop.html

The advantage of this type of loop is that it performs equally to a dipole
on
multiple frequencies. It is an excellent SWL antenna if you have the
real-estate.
Even a 1Xwavelength H-loop performs very well.

tianli_ wrote:
http://www.cebik.com/wire/horloop.html

The advantage of this type of loop is that it performs equally to a dipole
on
multiple frequencies.

The main disadvantage is that you could buy several hundred better
performing antennas for less than the first year's property taxes for
the land needed to construct the damn thing!

Yeesh. This makes my jokes about a 30-element MW log-periodic sound
practical by comparison.

Pull out your calculator. It's not that big.

"clifto" wrote in message
...
tianli_ wrote:
http://www.cebik.com/wire/horloop.html

The advantage of this type of loop is that it performs equally to a
dipole
on
multiple frequencies.

The main disadvantage is that you could buy several hundred better
performing antennas for less than the first year's property taxes for
the land needed to construct the damn thing!

Yeesh. This makes my jokes about a 30-element MW log-periodic sound
practical by comparison.

CW wrote:
"clifto" wrote...
tianli_ wrote:
http://www.cebik.com/wire/horloop.html

The advantage of this type of loop is that it performs equally to a
dipole
on
multiple frequencies.

Yeesh. This makes my jokes about a 30-element MW log-periodic sound
practical by comparison.

Pull out your calculator. It's not that big.

Imagine my surprise when my MW loop turned out to be only 1341 feet in
diameter, needing only 33 acres to hold it (41-1/3 if you own the entire
square the circle is inscribed in).

We'd need about 36 poles to hold it half a wavelength, or 1,054 feet,
off the ground.

Maybe we could rent Arecibo... is it big enough?

Imagine my surprise when my MW loop turned out to be only 1341 feet in
diameter, needing only 33 acres to hold it (41-1/3 if you own the entire
square the circle is inscribed in).

We'd need about 36 poles to hold it half a wavelength, or 1,054 feet,
off the ground.

Maybe we could rent Arecibo... is it big enough?

I don't think anyone is going to go through the trouble of building a H-loop
for the MW BCB. The original post inquired about the feasibility of a
longwire shaped into a "U". He was almost there by a few yards short of a
better performing horizontal loop.

The point of the discussion, and the links I included,
show that a modest horizontal loop has the same dB gain as a dipole AT
THE SAME HEIGHT. The loop advantage is that the dipole performs optimally
on its fundamental and harmonics ONLY, while the H-Loop performs equally
well on all frequencies at and above about its one wavelength circumference.

Read the links and learn.