Cecileo, master of the Universe wrote:

Aug 26, 2003, "Again, Born and Wolf disagree with Hecht."
Aug 28, 2003, "Hecht must be far too old and out of date."

If I spent more time, I could find many other quotes of

More time???? Six years and nothing sorted out - how much time are we
talking about?

Richard Clark wrote:
More time???? Six years and nothing sorted out ...

Myths and old wives' tales die hard.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Cecil Moore wrote:
Richard Clark wrote:
More time???? Six years and nothing sorted out ...

Myths and old wives' tales die hard.

So please stop trying to invent new ones.

ac6xg

Jim Kelley wrote:
Cecil Moore wrote:
Myths and old wives' tales die hard.

So please stop trying to invent new ones.

I'm not doing that, Jim, just trying to lay the
old ones to rest, e.g. a 3 nS delay through a
10" long 75m bugcatcher loading coil. Please
don't tell me that you believe that a 4 MHz
signal can travel through a large 10" inch
coil in 3 nS - a coil that exhibits a VF of
0.04. That's about seven times the speed of
light.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Cecil Moore wrote:
Jim Kelley wrote:
Cecil Moore wrote:
Myths and old wives' tales die hard.

So please stop trying to invent new ones.

I'm not doing that, Jim, just trying to lay the
old ones to rest, e.g. a 3 nS delay through a
10" long 75m bugcatcher loading coil. Please
don't tell me that you believe that a 4 MHz
signal can travel through a large 10" inch
coil in 3 nS - a coil that exhibits a VF of
0.04. That's about seven times the speed of
light.

Given that the speed of light is roughly 3 x10^8 meters per second, and
it would ordinarily take less than a nanosecond to traverse the 10",
it's not *THAT* unbelievable. The delay would depend on the series
inductance and shunt capacitance of the coil. What are those numbers?

ac6xg

Jim Kelley wrote:
Given that the speed of light is roughly 3 x10^8 meters per second, and
it would ordinarily take less than a nanosecond to traverse the 10",
it's not *THAT* unbelievable.

It is unbelievable for a device with a VF of 0.04
Do you understand how to include VF in a calculation?

The delay would depend on the series
inductance and shunt capacitance of the coil. What are those numbers?

All of those factors are included in the calculator at:

http://hamwaves.com/antennas/inductance.html

Tom's coil is 100 turns, 50.8mm coil diameter, 254mm long,
wire diameter of 1.024mm, and frequency = 4 MHz.

With a wavelength of 75m, exactly how does one obtain a
3 nS delay when the propagation factor is 2.12 radians/meter?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Cecil Moore wrote:
Jim Kelley wrote:
Given that the speed of light is roughly 3 x10^8 meters per second,
and it would ordinarily take less than a nanosecond to traverse the
10", it's not *THAT* unbelievable.

It is unbelievable for a device with a VF of 0.04

VF = 0.04 is incredible. I thought you were going to send me the coil
so I could measure it.

ac6xg

Cecil Moore wrote:
Myths and old wives' tales die hard.

Six years of your bragging about them insures that - like blowing up a
balloon with a slow leak.

Richard Clark wrote:
Cecil Moore wrote:
Myths and old wives' tales die hard.

Six years of your bragging about them insures that -
like blowing up a balloon with a slow leak.

This is coming from the person who asserted that
reflections from non-reflective glass are brighter
than the surface of the sun.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com