PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

Hello:

Have been putting a fair amount of time into
trying to understand antenna radiation patterns.
Guess I finally have to admit that I'm 3d challenged, and frankly have
difficulty in visualizing them.

So, let me just ask:

Am thinking of purchasing a PAR EFL- SWL receive only antenna for my attic.
Can probably be considered as an end fed dipole
Will probably run it as an inverted L, with the vertical section being about
10 feet, and going from the attic to the floor below where the radio is. As
the total length is 45', this would leave 35 feet going horizontally.
(placing outside would not be practical)

Interested in as omni as possible, as do listening most anywhere from 0.5 to
30 MHz.

Have two questions, please:

a. anyone ever use this antenna ? Think it would be "substantially" better
than what I have now which is a simle random length wire going around the 4
sides of my attic. Would sure appreciate any thoughts and opinions on this
PAR unit.

b. How "omni" is it ?

e.g.,

If I have the wire axis running N-S, is most of the sensitivity then in the
E-W direction (perpendicular to the wire) ?

If so, will I pick up "anything" in the N-S direction ?

Thanks,
B

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

On Sun, 18 Dec 2005 12:58:01 -0500, "Robert11"
wrote:

Hello:

Have been putting a fair amount of time into
trying to understand antenna radiation patterns.
Guess I finally have to admit that I'm 3d challenged, and frankly have
difficulty in visualizing them.

So, let me just ask:

Am thinking of purchasing a PAR EFL- SWL receive only antenna for my attic.
Can probably be considered as an end fed dipole
Will probably run it as an inverted L, with the vertical section being about
10 feet, and going from the attic to the floor below where the radio is. As
the total length is 45', this would leave 35 feet going horizontally.
(placing outside would not be practical)

Interested in as omni as possible, as do listening most anywhere from 0.5 to
30 MHz.

Have two questions, please:

a. anyone ever use this antenna ? Think it would be "substantially" better
than what I have now which is a simle random length wire going around the 4

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

In article ,
"Robert11" wrote:

Hello:

Have been putting a fair amount of time into
trying to understand antenna radiation patterns.
Guess I finally have to admit that I'm 3d challenged, and frankly have
difficulty in visualizing them.

So, let me just ask:

Am thinking of purchasing a PAR EFL- SWL receive only antenna for my attic.
Can probably be considered as an end fed dipole
Will probably run it as an inverted L, with the vertical section being about
10 feet, and going from the attic to the floor below where the radio is. As
the total length is 45', this would leave 35 feet going horizontally.
(placing outside would not be practical)

Interested in as omni as possible, as do listening most anywhere from 0.5 to
30 MHz.

Have two questions, please:

a. anyone ever use this antenna ? Think it would be "substantially" better
than what I have now which is a simle random length wire going around the 4
sides of my attic. Would sure appreciate any thoughts and opinions on this
PAR unit.

b. How "omni" is it ?

e.g.,

If I have the wire axis running N-S, is most of the sensitivity then in the
E-W direction (perpendicular to the wire) ?

If so, will I pick up "anything" in the N-S direction ?

The antenna will pick up stations in all directions. Usually the issue
here is the height above ground which will determine the horizon
visibility of the antenna. The higher up the antenna the more horizon it
will see and have a lower angle of reception. Generally the higher up
the antenna is the stronger the signal will be that it picks up. Being
in your attic it's probably on the order of 20 feet off the ground so it
will have a tendency to distort any pattern it may have higher off the
ground. Being in the attic will further distort the innate pattern the
antenna may have and spread out any lobes in the pattern.

--
Telamon
Ventura, California

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

On Sun, 18 Dec 2005 12:58:01 -0500, "Robert11"
wrote:

Hello:

Have been putting a fair amount of time into
trying to understand antenna radiation patterns.
Guess I finally have to admit that I'm 3d challenged, and frankly have
difficulty in visualizing them.

So, let me just ask:

Am thinking of purchasing a PAR EFL- SWL receive only antenna for my attic.
Can probably be considered as an end fed dipole
Will probably run it as an inverted L, with the vertical section being about
10 feet, and going from the attic to the floor below where the radio is. As
the total length is 45', this would leave 35 feet going horizontally.
(placing outside would not be practical)

Interested in as omni as possible, as do listening most anywhere from 0.5 to
30 MHz\0\0\0
Have two questions, please:

a. anyone ever use this antenna ? Think it would be "substantially" better
than what I have now which is a simle random length wire going around the 4

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

DaviD - 'you' are most eloquent . . .
when you say the least :o)

DaviD - and these blank posts
almost make 'you' sound like
.. . . an intellectual genus ;-}

just for the fun of it ! :0/ ~ RHF

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

DaviD - 'you' are most eloquent . . .
when you say the least :o)

DaviD - and these blank posts
almost make 'you' sound like
.. . . an intellectual genus ;-}

just for the fun of it ! :0/ ~ RHF

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

On 18 Dec 2005 14:31:19 -0800, "RHF"
wrote:

DaviD - 'you' are most eloquent . . .
when you say the least :o)

DaviD - and these blank posts
almost make 'you' sound like
. . . an intellectual genus ;-}

just for the fun of it ! :0/ ~ RHF
.
.
. .
My ISP is hiccuping.

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

David - " My ISP " - 'ISP' sounds more like a Lisp :o) ~ RHF

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

On 18 Dec 2005 23:28:10 -0800, "RHF"
wrote:

Yes David " Sometimes a banana is just a banana... "
but then again . . . ~ RHF
.
.
. .
Down boy. You've been spending too much time in the Bay Area...

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

David - I am currently up in Twain Harte.
Maybe it is you who is projecting :o) ~ RHF

PAR EFL-SWL Antenna, and Inverted-L Antenna Questions
 

Robert 11 and Telamon,

I was waiting for Dale Parfitt [W4OP] to reply to this Question.
FWIW - I have a Par EF-SWL Antenna setting right next to me
in the box as I Write : More about your Questions and Details
about the Par Electronics EF-SWL Antenna in the next post.

This may be of some interest concerning the Par Electronics
End-Fed Shortwave Listener's EF-SWL Antenna.

The Par Electronics End-Fed Shortwave Listener's EF-SWL Antenna
is a very good Shortwave Listening (SWL) Antenna and I recommend
it to any one who wants to get good results right out of the box by
simply adding Coax Cable and a Ground.

PAR Electronics EF-SWL Antenna Info :
http://groups.google.com/group/rec.r...b0c1f933b5e495

POPCOM= http://www.popular-communications.co...landOct04.html
MT= http://www.monitoringtimes.com/html/mt2003reviews.html
eHAM= http://www.eham.net/reviews/detail/3707
PAR= http://www.parelectronics.com/swl_end.htm
UR= http://www.universal-radio.com/catalog/sw_ant/2205.html
GE= http://www.grove-ent.com/ANT8.html

READ - PAR Electronics EF-SWL Antenna
http://groups.yahoo.com/group/Shortw...a/message/1666
http://groups.google.com/group/rec.r...85739bddf54cc3
Setting-Up the Ground Connection

READ: Par Electronics EF-SWL" End-Fed Shortwave Antenna
http://groups.yahoo.com/group/Shortw...na/message/277
http://groups.google.com/group/rec.r...2c697b586250c4


Question - Do you have a 'portable' AM/FM Shortwave Radio ?
Then Read Setting-Up a Par EF-SWL Antenna with a 'portable' AM/FM
Shortwave Radio using an External Antenna 1/8" Mono-Jack Input.
http://groups.yahoo.com/group/Shortw...a/message/1649

READ - Lets Think : Out-of-the-Box {Ready-Made}
Shortwave Listener (SWL) Antennas for a Minute.
http://groups.google.com/group/rec.r...1e9554b3d7d7ee



i have a par ef-swl antenna setting right next to me
in the box as i write - iane ~ RHF
[ More about your Questions and the
Par EF-SWL Antenna in the next post. ]

ABOUT USING - The Par Electronics End-Fed Shortwave Listener EF-SWL Antenna : In-the-Attic ?
 

Robert 11,

The Par Electronics End-Fed Shortwave Listener EF-SWL Antenna
will work in your Attic. And the Inverted "L" Antenna configuration
is generally a good choice to use with a the Par EF-SWL Antenna
for a "Low Noise SWL Antenna" using the 'design concepts' that
were popularized by John Doty.

Often enough I have written {Fingers On Automatic Typing}
CONSIDER BUILDING A "LOW NOISE" ANTENNA:
Try building an Improved SWL Random Wire Antenna that uses a
9:1 Matching Transformer (Balun / MLB) then you may not see
any real 'improvement' in your receive signal.
This is the so called "Low Noise" SWL Antenna.
Three "Must" Links to Read -wrt- Low Noise SWL Antenna
http://groups.yahoo.com/group/Shortw...na/message/949
[ Please READ These Three Links ]
http://www.anarc.org/naswa/badx/ante...e_antenna.html
http://www.anarc.org/naswa/badx/ante..._longwire.html
http://www.anarc.org/naswa/badx/antennas/grounding.html
ABOUT THE "LOW NOISE" ANTENNA 'DESIGN CONCEPTS':
A Random Wire Antenna Element coupled via a 9:1 Matching
Transformer at the Near-End of the Antenna with a Ground
Rod and Coax Cable Feed-in-Line to the Receiver. This is
the basic SWL Antenna that uses the "Low Noise Antenna"
'design concepts' that were {popularized} by John Doty.

From OP: Thanks All. ABOUT USING - The Par Electronics End-Fed Shortwave Listener EF-SWL Antenna : In-the-Attic ?
 

Hi,

Just a quick thank to all, for the replies and info.
Appreciate it.

Happy Holidays,
Bob

ABOUT USING - The Par Electronics End-Fed Shortwave Listener EF-SWL Antenna : In-the-Attic ?
 

On 20 Dec 2005 01:30:00 -0800, "RHF"
wrote:
[surgically removed for euthanasia]

You'd communicate better with more space and fewer punctuations.