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Simple One-Wire Outdoor Shortwave Antenna



 
 
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  #1  
Old August 21st 07, 01:55 AM posted to rec.radio.shortwave
RHF
external usenet poster
 
Posts: 8,683
Default Simple One-Wire Outdoor Shortwave Antenna

JLS,
.
Simple One-Wire Outdoor Shortwave Antenna
http://groups.yahoo.com/group/Shortw.../message/14298
.
Black Stranded Hook-Up Wire from Radio Shack
.
* Small - Thin and hard-to-see "Stealth"
.
* Insulated and Weather Proof
.
* Stranded and Flexible and Strong for it's size.
.
* About $5~$6 for a 55 Foot or 90 Foot Spools
.
55-Ft. UL-Recognized Hookup Wire -AWG Size # 18 -Thicker-
http://www.radioshack.com/product/in...ductId=2049741
RadioShack Catalog # 278-1220
.
90-Ft. UL-Recognized Hookup Wire - AWG Size # 22 -Thinner-
http://www.radioshack.com/product/in...ductId=2036275
RadioShack Catalog # 278-1218
.
PUTTING THE ANTENNA UP :
Stick it out the Window and Hang it about as you like.
It is "Insulated so you could 'tie' it directly to Trees
and Structures; or simply wrap it around a Nail or Screw;
or Staple it in place. Better would be to use some Nylon
Poly Mason Line and Rig it from Point-to-Point.
.
Strip-Off an Inch of Insulation and connect to your Radio's
External Antenna Input/Jack or Clip-on to the Whip Antenna.
.
TIP - Keep the Antenna Wire away from metal objects.
.
Alternative is to buy an Antenna Kit :
RadioShack "Outdoor Antenna Kit # 278-758
http://support.radioshack.com/suppor...cations/swave-
4.htm
For Shortwave Radios that have an External Antenna Jack
· 70 Feet of Bare Copper Antenna Wire
· 50 Feet of Insulated Lead-in Wire
· Insulators
· Window Feed-through Strip
* Some Radioshack Stores still have a few in stock.
-or- Radio Shack Shortwave Radio Antenna Kit
You can find them on eBay = http://tinyurl.com/2kus7v
http://www.markdownalley.com/showite...source=froogle
.
Read -A Guide to Your "SkyHook" {Antenna}
http://www.moonlightsys.com/otr/antenna.html
Vintage Radio Antenna Tips
.
Read - Shortwave Antenna Safety Tips
http://www.universal-radio.com/catal...t/safeswl.html
.
.
More Answers To Follow . . .
.
hope this helps - iane ~ RHF
.
.
.. .

- - - In ,
- - - "Jeffery Smith" jsmith342@... wrote:
http://groups.yahoo.com/group/ETON-E...o/message/5147
.
I am having difficulty pulling in any stations while using
telescoping antennas. I was thinking of stringing up a simple
line of about 50' or so. Actually, my lot is 120' long, so I
could string up a 100' wire.
.
What kind of wire should I use? Bare copper twisted wire will
surely corrode quickly in my climate. And should I attach a
shielded coax line leading to my radio. And, can the wire
leading to my radio be attached anywhere along the length of
the wire, or should it be attached to the end.
.
Sorry about all of the questions.
.
--
Jeffery L. Smith
New Orleans, LA
.
.
Shortwave Listener (SWL) Antennas Group = http://tinyurl.com/ogvcf
GoTo = http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
The SWL Antenna Discussion Group = http://tinyurl.com/ogvcf
Shortwave Listener (SWL) Antenna HELP = http://tinyurl.com/ogvcf
Shortwave Listener (SWL) Antenna NEWS = http://tinyurl.com/ogvcf
Shortwave Listener (SWL) Antenna INFO = http://tinyurl.com/ogvcf
* * * All Are Welcome : Including ELMERS and 'Want-to-be-Elmers'
plus plain old "Mister-Know-It-Alls"; and even those Newbees with
"I Know This Is A Really Dumb Question - But _ _ _ _ _ _ _ _ "
.
The Shortwave Listener's Blessing :
SWL BLESSING = http://tinyurl.com/s2bjm
May You Never Tire of Listening to the Radio and Always
have Strong Signals and Noise Free Reception ~ RHF {ibid}
http://groups.yahoo.com/group/Shortw...a/message/9233
.
Tous Sont Bienvenus ! - - - Groupe par Radio
d'auditeur d'onde courte pour des Antennes de SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Alle Sind Willkommen ! - - - Shortwave Radiozuhörer
Gruppe für SWL Antennen
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Tutti Sono Benvenuti ! - - - Gruppo Radiofonico
dell'ascoltatore di onda corta per le Antenne di SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Todos São Bem-vindos ! - - - Grupo de Rádio
do ouvinte do Shortwave para Antenas de SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
¡Todos Son Agradables! - - - Grupo de Radio del oyente
de la onda corta para las Antenas de SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
= = = = Plain Old American-English Translation = = = =
All are Welcome - - - To Join the Shortwave Listeners
(SWL) Antenna Group on YAHOO !
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
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  #2  
Old August 24th 07, 10:03 AM posted to rec.radio.shortwave
RHF
external usenet poster
 
Posts: 8,683
Default Part II : Beyond the Simple One-Wire Outdoor Shortwave Antenna

More Answers To Follow . . .

Part II : Beyond the Simple One-Wire Outdoor Shortwave Antenna
http://groups.yahoo.com/group/Shortw.../message/14406

OK so you have your Eton E1 Radio and you want more out of it.

Clearly besides a new Radio the only major way of doing this
is a better Shortwave Antenna for the Radio.

Assume you live in an Urban Area and AM/MW Radio Stations
become a problem when you start using an External "Longwire"
Antenna with your Radio.

Assume that you have the Space for an External Antenna and
that there are No Restrictions on Outside Antennas.

Now lets start with your eton E1 Radio : It uses a PAL Jack
for the external Shortwave Antenna connection.

So first of all you need a PAL Plug to mate-up with the
PAL Jack on the Radio.

-Note- The PAL Connections are the EU {World Wide}
equilvalent of the USA's "F" Connector. and most of
them work well with TV type 75 Ohm Coax Cable.
-OR- You could use a PAL to "F" Adaptor.

So why not use TV type 75 Ohm Coax Cable as your Shortwave
Antennas feed-in-line !

Converting from the Coax Cable to the Wire Antenna Element(s).
To 'match' the Coax Cable to the Wire Antenna you will need
a Matching Transformer. The simplist an most common to find
is the 300 Ohm to 75 Ohm TV type Matching Transformer.
-Note- The TV type Matching Transformer greatly attenuates
the RF Signals below 5 MHz so to some extent it is an AM/MW
Band Rejection Filter.
The Two 300 Ohm Wire Leads of the Matching Transformer
give you a few Shortwave Antenna Options :
* Dipole or Inverted "V' or Multi-Dipole Antenna
* Windom Antenna
* Horizontal Wire Antenna {Longwire / Random Wire}
* Inverted "L" Antenna
The Dipole and the Windom both use each of the Two 300 Ohm
Wire Leads like a Balun. And you can either Cut them to a
Shortwave Band Size -or- Cut them to fill the Available Space
you have to work in Safely.

Examples of Cut-To-Size Dipole Antenna Sizes :
60m = 95.4 Feet Tip-to-Tip or = 47.7 Feet per Arm
49m = 77.0 Feet Tip-to-Tip or = 38.5 Feet per Arm
41m = 63.7 Feet Tip-to-Tip or = 31.8 Feet per Arm
31m = 49.0 Feet Tip-to-Tip or = 24.5 Feet per Arm
25m = 39.3 Feet Tip-to-Tip or = 19.7 Feet per Arm
22m = 34.1 Feet Tip-to-Tip or = 17.7 Feet per Arm

Examples of Cut-To-Size Windom Antenna Sizes :
60m & 41m = Long Arm 47.7 Feet and 31.8 Feet Short Arm
49m & 31m = Long Arm 38.5 Feet and 24.5 Feet Short Arm
31m & 22m = Long Arm 24.5 Feet and 17.7 Feet Short Arm

-Note- The Dipole and Windom Antennas are 'balanced'
Antennas and a Ground may not be needed to make them
function well.

The Horizontal Wire and Inverted "L" Antennas are single
Wire Antennas and you will use one of the 300 Ohm Lead
to connect to the Wire Antenna Element and . . .
What Do I Do with the 'other' Lead ? ? ?
Connect a short 3-4 Inch Bare Wire to this other Lead
and use a Hose Clamp to Secure it to the outside of the
"F" Connector attached to the 75 Ohm Connector of the
Matching Transformer - you now have a Magnetic Longwire
Balun (MLB).

The Horizontal Wire Antenna can be any Random Length Wire
that you can Safely Rig within your Property Limits.

The Inverted "L" Antenna can be any Random Length Wire
that you can Safely Rig within your Property Limits.
-OR- Inverted "L" Antenna can be Cut-to-Size

Examples of Cut-To-Size Inverted "L" Antenna Sizes :
31m & 60m = Vert-Leg 24.5 Feet and Horiz-Arm 47.7 Feet
25m & 49m = Vert-leg 19.7 Feet and Horiz-Arm 38.5 Feet
19m & 41m = Vert-Leg 15.1 Feet and Horiz-Arm 31.8 Feet
{ Relative Aspect Radio 1V : 2H }

-Note- The Horizontal Wire and Inverted'L" Antennas are
'un-balanced' Antennas and a Ground will be needed to
make them function properly.

For the Coax Cable feed-in-line i recommend RG6 Quad
Shield Coax Cable. As musch as you need to get from
you Eton E1 Radio to your Matching Transformer and
Wire Antenna Elements.

All of these above Wire Antennas should have lower Noise
and better Signal Levels then a simple plain wire Antenna;
and provide for a more enjoyable Shortwave Listening (SWL)
experience.


hope this helps - iane ~ RHF {pomkia}
.
Shortwave Listener (SWL) Antennas Group = http://tinyurl.com/ogvcf
GoTo = http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
The SWL Antenna Discussion Group = http://tinyurl.com/ogvcf
Shortwave Listener (SWL) Antenna HELP = http://tinyurl.com/ogvcf
Shortwave Listener (SWL) Antenna NEWS = http://tinyurl.com/ogvcf
Shortwave Listener (SWL) Antenna INFO = http://tinyurl.com/ogvcf
* * * All Are Welcome : Including ELMERS and 'Want-to-be-Elmers'
plus plain old "Mister-Know-It-Alls"; and even those Newbees with
"I Know This Is A Really Dumb Question - But _ _ _ _ _ _ _ _ "
.
The Shortwave Listener's Blessing :
SWL BLESSING = http://tinyurl.com/s2bjm
May You Never Tire of Listening to the Radio and Always
have Strong Signals and Noise Free Reception ~ RHF {ibid}
http://groups.yahoo.com/group/Shortw...a/message/9233
.
Tous Sont Bienvenus ! - - - Groupe par Radio
d'auditeur d'onde courte pour des Antennes de SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Alle Sind Willkommen ! - - - Shortwave Radiozuhörer
Gruppe für SWL Antennen
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Tutti Sono Benvenuti ! - - - Gruppo Radiofonico
dell'ascoltatore di onda corta per le Antenne di SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
Todos São Bem-vindos ! - - - Grupo de Rádio
do ouvinte do Shortwave para Antenas de SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
¡Todos Son Agradables! - - - Grupo de Radio del oyente
de la onda corta para las Antenas de SWL
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
= = = = Plain Old American-English Translation = = = =
All are Welcome - - - To Join the Shortwave Listeners
(SWL) Antenna Group on YAHOO !
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/
.
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........!.......

 




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