Discone antenna plans
 

Does anyone know if there are plans for a discone scanner antenna on
the web to build?

THE QUESTION BOX wrote in message
oups.com...
Does anyone know if there are plans for a discone scanner antenna on
the web to build?


QRZ has a discone design download

http://www.qrz.com/download/antennas/discone1.zip

Also see:
http://www.northcountryradio.com/Articles/discone.htm

P.S. When are you going to learn how to use Google ?
I found these two links in 10 seconds using Google
There are more there as well

Click on this URL:
http://www.google.com/

Type in Discone antenna

Get dozens of places to look.

Also have you bought an antenna book yet -- most of your questions can be
answered by studying a good antenna book.

It is difficult to teach you antennas here. It would take several pages.

Antenna theory on the web can be found at these URL's
Antenna Basics and Theory -- WOW -- See this One -- From Navy Training
Series


Antenna Basics and Theory -- From Ian C. Purdie, VK2TIP


Antenna Basics and Theory -- Excellent Tutorial From Scott's Pages


Antenna Basics and Theory -- Excellent From Integrated Publishing


Antenna Basics and Theory -- From Sub-TV


Antenna Basic Radiation Theory-- From The ARRL


Antenna Basics and Theory -- Excellent - From VK2DQ


Antenna Construction Tips And Practices -- From KQ6RH


Antenna Construction Tips -- Metals to use. From Bob Hejl - W2IK


Antenna Dimension Calculators -- From The Antenna Elmer - Click On Antenna
Type


Antenna Dimension Calculators -- Inverted Vee And Dipoles


Antenna Dimensions Calculator-- Dipoles From AMANDX


Antenna Dimensions Calculators -- Loops, Dipoles, Delta Loop, and 5/8
waves -- KK5HY


Antenna Gain -- From L. B. Cebik


Antenna Height? -- How High Should They Be? -- By Mike Banz, AA3RL


Antenna Tuner Theory -- From The ARRL


Antenna Tuners and SWR -- From The ARRL


Antenna Tuners - How to use


Baluns -- IZ7ATH


Baluns and Choke Baluns -- From Ian C. Purdie, VK2TIP


Baluns - W8JI Antenna Articles Toroid Balun Winding * Balun and Transformer
Core Selection * Transmitting Baluns


Choosing Wire For An Antenna


Dipole End Insulator Installation -- Lots of photos From NorthWest Antennas


Ground & Radial Systems -- From Butternut


Height Of Dipoles - Patterns By AA3RL


Loaded Antennas - From Tom W8JI


Noise -- Technical article about noise and receiving/ receiving antennas
From Tom W8JI


NVIS I- Near Vertical Incident Skywave Antennas -- By Patricia Gibbons -
WA6UBE


NVIS II - Near Vertical Incident Skywave Antennas Via WB5UDE


QuarterWave Antenna installation notes -- includes ground/raised radial
info -- From Butternut


Radiation And Fields -- From Tom W8JI


Radiation Resistance -- From Tom W8JI


Slingshot method for hanging SkyWires


Tower Topics, Raising, Specs -- Several Links


Traps - How do they work ? Excellent - From VK2DQ


Traps -- Excellent From Tom W8JI


TrapDip Design and performance of 2-band trapped dipole antennas including
trap design. Lots more


Trees -- Getting an Antenna Up in em -- From G3CWI


Vertical Antennas - Dirty Little Secrets, Ground/Radial Systems - Click On
Tech Notes


The Effects of VSWR on Transmitted Power --By James G. Lee, W6VAT


--
Caveat Lector

All of the theory URL's Listed below can be found at

http://ac6v.com/antprojects.htm#theory



--
Caveat Lector



"Caveat Lector" wrote in message
news:PvwFd.11$ru.6@fed1read07...
THE QUESTION BOX wrote in message
oups.com...
Does anyone know if there are plans for a discone scanner antenna on
the web to build?


QRZ has a discone design download

http://www.qrz.com/download/antennas/discone1.zip

Also see:
http://www.northcountryradio.com/Articles/discone.htm

P.S. When are you going to learn how to use Google ?
I found these two links in 10 seconds using Google
There are more there as well

Click on this URL:
http://www.google.com/

Type in Discone antenna

Get dozens of places to look.

Also have you bought an antenna book yet -- most of your questions can be
answered by studying a good antenna book.

It is difficult to teach you antennas here. It would take several pages.

Antenna theory on the web can be found at these URL's
Antenna Basics and Theory -- WOW -- See this One -- From Navy Training
Series


Antenna Basics and Theory -- From Ian C. Purdie, VK2TIP


Antenna Basics and Theory -- Excellent Tutorial From Scott's Pages


Antenna Basics and Theory -- Excellent From Integrated Publishing


Antenna Basics and Theory -- From Sub-TV


Antenna Basic Radiation Theory-- From The ARRL


Antenna Basics and Theory -- Excellent - From VK2DQ


Antenna Construction Tips And Practices -- From KQ6RH


Antenna Construction Tips -- Metals to use. From Bob Hejl - W2IK


Antenna Dimension Calculators -- From The Antenna Elmer - Click On Antenna
Type


Antenna Dimension Calculators -- Inverted Vee And Dipoles


Antenna Dimensions Calculator-- Dipoles From AMANDX


Antenna Dimensions Calculators -- Loops, Dipoles, Delta Loop, and 5/8
waves -- KK5HY


Antenna Gain -- From L. B. Cebik


Antenna Height? -- How High Should They Be? -- By Mike Banz, AA3RL


Antenna Tuner Theory -- From The ARRL


Antenna Tuners and SWR -- From The ARRL


Antenna Tuners - How to use


Baluns -- IZ7ATH


Baluns and Choke Baluns -- From Ian C. Purdie, VK2TIP


Baluns - W8JI Antenna Articles Toroid Balun Winding * Balun and
Transformer Core Selection * Transmitting Baluns


Choosing Wire For An Antenna


Dipole End Insulator Installation -- Lots of photos From NorthWest
Antennas


Ground & Radial Systems -- From Butternut


Height Of Dipoles - Patterns By AA3RL


Loaded Antennas - From Tom W8JI


Noise -- Technical article about noise and receiving/ receiving antennas
From Tom W8JI


NVIS I- Near Vertical Incident Skywave Antennas -- By Patricia Gibbons -
WA6UBE


NVIS II - Near Vertical Incident Skywave Antennas Via WB5UDE


QuarterWave Antenna installation notes -- includes ground/raised radial
info -- From Butternut


Radiation And Fields -- From Tom W8JI


Radiation Resistance -- From Tom W8JI


Slingshot method for hanging SkyWires


Tower Topics, Raising, Specs -- Several Links


Traps - How do they work ? Excellent - From VK2DQ


Traps -- Excellent From Tom W8JI


TrapDip Design and performance of 2-band trapped dipole antennas
including trap design. Lots more


Trees -- Getting an Antenna Up in em -- From G3CWI


Vertical Antennas - Dirty Little Secrets, Ground/Radial Systems - Click On
Tech Notes


The Effects of VSWR on Transmitted Power --By James G. Lee, W6VAT


--
Caveat Lector

Those plans are for uhf only.

wrote:
Those plans are for uhf only.

Antennas are scalable.
--
73, Cecil http://www.qsl.net/w5dxp


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Cecil Moore wrote:
wrote:
Those plans are for uhf only.

Antennas are scalable.
--
73, Cecil http://www.qsl.net/w5dxp


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How would I "scale it".

wrote:
Cecil Moore wrote:
Antennas are scalable.

How would I "scale it".

For instance, if an antenna is resonant on 460 MHz,
multiply all the dimensions by pi to make it resonant
on approximately 146.4 MHz.
--
73, Cecil http://www.qsl.net/w5dxp


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On Fri, 14 Jan 2005 11:18:18 -0600, Cecil Moore
wrote:
For instance, if an antenna is resonant on 460 MHz,
multiply all the dimensions by pi to make it resonant
on approximately 146.4 MHz.
What flavr pi and how long wuld i hav to bak it? (Kentucky humor)

Richard Clark wrote:
Cecil Moore wrote:

For instance, if an antenna is resonant on 460 MHz,
multiply all the dimensions by pi to make it resonant
on approximately 146.4 MHz.

What flavr pi and how long wuld i hav to bak it? (Kentucky humor)

When I divided 460 by 146, it was so close to pi that I
couldn't resist. We have a cartoon on the wall here at
the GED center that was lifted from a MENSA publication.

The setting is a restaurant where a man has just asked the
waitress, "How much is pie?" She responds, "How much is pi?
Last I heard it was
3.141592653589793238462643383279502884197169399375 1058209749..."
There are a couple of hundred additional digits on the cartoon.
--
73, Cecil http://www.qsl.net/w5dxp


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Cecil Moore wrote:
wrote:
Cecil Moore wrote:
Antennas are scalable.

How would I "scale it".

For instance, if an antenna is resonant on 460 MHz,
multiply all the dimensions by pi to make it resonant
on approximately 146.4 MHz.
--
73, Cecil http://www.qsl.net/w5dxp


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News==----
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This is a joke, right?

I am serious with the question. Will "scaling it" for a bottom band of
say 108 mhz make it "less efficent" at higher band?

wrote:
Cecil Moore wrote:
For instance, if an antenna is resonant on 460 MHz,
multiply all the dimensions by pi to make it resonant
on approximately 146.4 MHz.

This is a joke, right?

Not exactly - just a dash of Aquarian humor.

I am serious with the question. Will "scaling it" for a bottom band of
say 108 mhz make it "less efficent" at higher band?

If a uhf discone is designed to cover 400-500 MHz, for instance,
when you scale it to a vhf center frequency of 108 MHz, it will
cover approximately 96-120 MHz.
--
73, Cecil http://www.qsl.net/w5dxp


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On 14 Jan 2005 10:59:47 -0800, wrote:
I am serious with the question. Will "scaling it" for a bottom band of
say 108 mhz make it "less efficent" at higher band?
Only if you burn yur pi krust on the higher setting - SERIOUS! :-)

By the way, what flavor pi did you pick? In the News Democrat and
LEader they offer recipes for cranberries today (mmmm cranberry pi for
UHF). The Kentucky NeW Era reports apples are a good bet out at
Schlei's Orchards this weekend (mmmm apple pi for VHF).

i don't have apples....only windows xp

"Richard Clark" wrote in message
...
On 14 Jan 2005 10:59:47 -0800, wrote:
I am serious with the question. Will "scaling it" for a bottom band of
say 108 mhz make it "less efficent" at higher band?
Only if you burn yur pi krust on the higher setting - SERIOUS! :-)

By the way, what flavor pi did you pick? In the News Democrat and
LEader they offer recipes for cranberries today (mmmm cranberry pi for
UHF). The Kentucky NeW Era reports apples are a good bet out at
Schlei's Orchards this weekend (mmmm apple pi for VHF).

On Fri, 14 Jan 2005 21:46:55 GMT, "Radio Man"
wrote:
i don't have apples....only windows xp

*** the category is pi for 2¢ ***
*** Sorry, but in these rounds of Jeopardy, ***
*** you must put your response in the form of a question ***

tum-de-dum-dum dum-dum-dum ....