Why do you need to shorten a dipole for 433 MHz? A half-wave dipole is
a bit over a foot in length...

Scott
N0EDV

wrote:

Hi All,

At 433 MHz UHF, I need to reduce the lenght of the dipole using loading
coils or a better method.

I need to know if there is a antenna program or a method to determine
values and location.

tnx de KJ4UO.

It's pretty early in the morning, but isn't that what the original
poster wants? To make an antenna physically shorter than normal? If
so, loading coils are the correct option. My only question is who would
need to physically shorten a UHF antenna in the first place?

Scott
N0EDV

Ham op wrote:

Loading coils do NOT shorten an antenna! They electrically lengthen an
antenna that is already physically too short.

What do you really want to accomplish?

wrote:

Hi All,

At 433 MHz UHF, I need to reduce the lenght of the dipole using loading
coils or a better method.

I need to know if there is a antenna program or a method to determine
values and location.

tnx de KJ4UO.

Scott:

Maybe "the little people?"

John

"Scott" wrote in message
...
It's pretty early in the morning, but isn't that what the original
poster wants? To make an antenna physically shorter than normal?
If so, loading coils are the correct option. My only question is
who would need to physically shorten a UHF antenna in the first
place?

Scott
N0EDV

Ham op wrote:

Loading coils do NOT shorten an antenna! They electrically
lengthen an antenna that is already physically too short.

What do you really want to accomplish?

wrote:

Hi All,

At 433 MHz UHF, I need to reduce the lenght of the dipole using
loading
coils or a better method.

I need to know if there is a antenna program or a method to
determine
values and location.

tnx de KJ4UO.

All joking aside...

I can see loading up elements as full length helical coils, shortening
the boom and fitting it all in a briefcase.

Maybe use it on the next "James Bond" mission... or, with the hand
held, just to shoot the breeze from the seventh-floor of the office
balcony at lunch time...

John

"Scott" wrote in message
...
It's pretty early in the morning, but isn't that what the original
poster wants? To make an antenna physically shorter than normal?
If so, loading coils are the correct option. My only question is
who would need to physically shorten a UHF antenna in the first
place?

Scott
N0EDV

Ham op wrote:

Loading coils do NOT shorten an antenna! They electrically
lengthen an antenna that is already physically too short.

What do you really want to accomplish?

wrote:

Hi All,

At 433 MHz UHF, I need to reduce the lenght of the dipole using
loading
coils or a better method.

I need to know if there is a antenna program or a method to
determine
values and location.

tnx de KJ4UO.

So it can be hidden with the explosives ?????

Scott wrote:

Why do you need to shorten a dipole for 433 MHz? A half-wave dipole is
a bit over a foot in length...

Scott
N0EDV