Electrical length
 

what is the electrical length of a transmission line in degree?

regards

On 4 Jul 2005 11:09:25 -0700, "redhat" wrote:

what is the electrical length of a transmission line in degree?

regards


Electrical Length in degrees = 360 degrees for each wavelength divided
by the velocity factor.
Bob, W9DMK, Dahlgren, VA
Replace "nobody" with my callsign for e-mail
http://www.qsl.net/w9dmk
http://zaffora/f2o.org/W9DMK/W9dmk.html

0.366L(feet)F(MHz)
L(degrees) = -------------------
VF


--or--
1.20L(meters)F(MHz)
L(degrees) = ---------------------
VF

John
"redhat" wrote in message
oups.com...
what is the electrical length of a transmission line in degree?

regards

what is the electrical length of a transmission line in degree?

======================================

It depends on frequency, its physical length and on its propagation
velocity.

Velocity Factor (VF) = Actual velocity on line / Velocity of light.

It is sometimes better to refer to length in wavelengths rather than
degrees.

One wavelength = 360 degrees. 1/4-wave line length = 90 degrees.

I'll leave somebody else to write down the actual formula for the
number of degrees in a given length of line in metres, at a given
frequency in MHz and given VF. I'm too tired.
----
Reg.

Reg Edwards wrote:
I'm too tired.

Me too, Reg, too much vino. :-)
--
73, Cecil http://www.qsl.net/w5dxp

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Cecil:

I am growing rather suspicious of you here, we seem to only hear from
you when the wine glass (wine bottle?) is empty! grin

It does bypass the argument over if half-full or half-empty, which is
of a great practical assistance! innocent look

.... and more wine has always fixed most of my perceived problems.
Well, at least it has worked as an immediate fix--not long term
however.

John

"Cecil Moore" wrote in message
...
Reg Edwards wrote:
I'm too tired.

Me too, Reg, too much vino. :-)
--
73, Cecil http://www.qsl.net/w5dxp

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News==----
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120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via
Encryption =----

At 11 o'clock in the freakin' morning?

Jim


"Cecil Moore" wrote in message
...
Reg Edwards wrote:
I'm too tired.

Me too, Reg, too much vino. :-)
=----

Jim:

Yeah. Cecil is getting old, you can tell, most of us got a jump on
that late hour.

In California we are given a two hour head start (by PST) just to keep
up with those texans! stiff-upper-lip

However, we don't pop the top on the bottle of viagra till 5 p.m.,
before that just isn't considered civilized!
blue-tint-to-facial-features

John

"RST Engineering" wrote in message
...
At 11 o'clock in the freakin' morning?

Jim


"Cecil Moore" wrote in message
...
Reg Edwards wrote:
I'm too tired.

Me too, Reg, too much vino. :-)
=----

In terms that (here)can be understood-- Acting like a HI-"Q"
Circuit-- (Hell of a Capacity, and Damn little Resistance)!

Have fun! Jim NN7K



Cecil Moore wrote to Reg Edwards:

I'm too tired.


Me too, Reg, too much vino. :-)

How long is a piece of string?

"redhat" wrote in message
oups.com...
what is the electrical length of a transmission line in degree?

regards