Robert Casey wrote:
WA8ULX wrote:

Do you guys dream about morse code tests?





Look lid you still dont get it, I am well aware the CW test is gone, my
complaint still is the Give away Written.

So why are we all not extras, then? If the writtens are so easy?

For many people, those tests are *not* that easy. For me they were, but
I had plenty of experience. It was still a week of fairly intense study.

Can the tests be passed with one of these weekend classes? Probably.
Just like college students do all-night cramming for their tests. You
pass the test, then quickly forget about it. They cheat themselves.

Short of essay questions, with the grader making an often arbitrary
right or wrong judgement on anything that isn't a numerical answer, we
are stuck with multiple choice. It's the worst system, except for all
the others.

- Mike KB3EIA -

In article . net, "Bill Sohl"
writes:

Radio is but a small part of electrical engineering, and it keeps getting
smaller as other technologies come along. Heck, the hot subject in
communications today is fiber optics - which works by on-off keying!

While it is true that fiber technology today is digitally based, fiber
can actually be used for an analog transmisison function if someone
wanted to.

Of course!

But in fact, the mode used in practically all fiber optic communications is
simple on-off keying of a "carrier".

Very similar, in fact, to landwire telegraph practice, speeded up and
automated, and using photons instead of electrons.

73 de Jim, N2EY

73 de Jim, N2EY

"N2EY" wrote



But in fact, the mode used in practically all fiber optic communications
is
simple on-off keying of a "carrier".

Very similar, in fact, to landwire telegraph practice, speeded up and
automated, and using photons instead of electrons.

Jim, your credibility is fast evaporating!!!!!! This is the most wildly
stretched and tortured analogy to hit rrap since FOREVER! Next you'll tell
us that ...... aw never mind, I can't even read your stuff with a straight
face anymore. You're funnier than Masatoka whatever-his-name-was. I think
you must have done multiple sessions of boko-maru with him.

73, de Hans, K0HB

In article . net, "KØHB"
writes:

"N2EY" wrote



But in fact, the mode used in practically all fiber optic communications
is
simple on-off keying of a "carrier".

Very similar, in fact, to landwire telegraph practice, speeded up and
automated, and using photons instead of electrons.

Jim, your credibility is fast evaporating!!!!!! This is the most wildly
stretched and tortured analogy to hit rrap since FOREVER!

How so?

The old original landwire telegraph used a single (usually iron) wire and
on-off keying of an electric current. Fiber optics uses a glass fiber and
on-off keying of an beam of light, usually from a laser. Both sent messages by
time-domain multiplexing.

Next you'll tell
us that ...... aw never mind, I can't even read your stuff with a straight
face anymore. You're funnier than Masatoka whatever-his-name-was.

"Are you not entertained??? Is this not what you came here for??"*

I think
you must have done multiple sessions of boko-maru with him.

Aw, now you're getting insulting....

Be well.

73 de Jim, N2EY

* pop culture reference: Maximus to the crowd in the film "Gladiator"

"N2EY" wrote in message
...
In article . net, "KØHB"
writes:

"N2EY" wrote



But in fact, the mode used in practically all fiber optic
communications
is
simple on-off keying of a "carrier".

Very similar, in fact, to landwire telegraph practice, speeded up and
automated, and using photons instead of electrons.

Jim, your credibility is fast evaporating!!!!!! This is the most wildly
stretched and tortured analogy to hit rrap since FOREVER!

How so?

The old original landwire telegraph used a single (usually iron) wire and
on-off keying of an electric current. Fiber optics uses a glass fiber and
on-off keying of an beam of light, usually from a laser. Both sent
messages by
time-domain multiplexing.

Actually, in really high speed optical equipment it is both
time domain and wavelengths/frequency (sometimes called color) domains.
There is equipment out there that operates at 1.6 Terrabits/sec.

Cheers,
Bill

"Bill Sohl" wrote in message hlink.net...
"N2EY" wrote in message
...
In article . net, "KØHB"
writes:

"N2EY" wrote



But in fact, the mode used in practically all fiber optic
communications
is
simple on-off keying of a "carrier".

Very similar, in fact, to landwire telegraph practice, speeded up and
automated, and using photons instead of electrons.

Jim, your credibility is fast evaporating!!!!!! This is the most wildly
stretched and tortured analogy to hit rrap since FOREVER!

How so?

The old original landwire telegraph used a single (usually iron) wire and
on-off keying of an electric current. Fiber optics uses a glass fiber and
on-off keying of an beam of light, usually from a laser. Both sent
messages by
time-domain multiplexing.

Actually, in really high speed optical equipment it is both
time domain and wavelengths/frequency (sometimes called color) domains.

Multiple "carriers" (different light wavelengths) on the same fiber,
right? Kinda like multiple telegraph carriers of old.

But isn't the basic modulation scheme still on-off keying of the
light, rather than shifting its color or phase?

There is equipment out there that operates at 1.6 Terrabits/sec.

lessee...10^12 bits/second...that's more than all of the RF spectrum
normally used for radio, right? And that's through *one* fiber that's
immune to EM fields, weather, ionospheric and tropospheric
propagation, EMI and almost everything else except shovels.

Now that's cool.

But it does have a downside. It permits a significant number of US
jobs to be outsourced to places like India (or anywhere else that has
a significant English-speaking population).

73 de Jim, N2EY

"N2EY" wrote in message
om...
"Bill Sohl" wrote in message
hlink.net...
"N2EY" wrote in message
...
In article . net,
"KØHB"
writes:

"N2EY" wrote



But in fact, the mode used in practically all fiber optic
communications
is
simple on-off keying of a "carrier".

Very similar, in fact, to landwire telegraph practice, speeded up
and
automated, and using photons instead of electrons.

Jim, your credibility is fast evaporating!!!!!! This is the most
wildly
stretched and tortured analogy to hit rrap since FOREVER!

How so?

The old original landwire telegraph used a single (usually iron) wire
and
on-off keying of an electric current. Fiber optics uses a glass fiber
and
on-off keying of an beam of light, usually from a laser. Both sent
messages by
time-domain multiplexing.

Actually, in really high speed optical equipment it is both
time domain and wavelengths/frequency (sometimes called color) domains.

Multiple "carriers" (different light wavelengths) on the same fiber,
right? Kinda like multiple telegraph carriers of old.

But isn't the basic modulation scheme still on-off keying of the
light, rather than shifting its color or phase?

Yes. I wasn't disputing that point, just noting that the on/off time domain
muxing isn't the only way that increased data rates are obtained.

There is equipment out there that operates at 1.6 Terrabits/sec.

lessee...10^12 bits/second...that's more than all of the RF spectrum
normally used for radio, right? And that's through *one* fiber that's
immune to EM fields, weather, ionospheric and tropospheric
propagation, EMI and almost everything else except shovels.

Now that's cool.

But it does have a downside. It permits a significant number of US
jobs to be outsourced to places like India (or anywhere else that has
a significant English-speaking population).

New technology almost always has a downside for some group or groups.
Would you rather such advances not become reality?

Cheers,
Bill K2UNK

New technology almost always has a downside for some group or groups.
Would you rather such advances not become reality?


No.. but how will we all pay for new toys if we are on the bread lines or
slicing baloney at Stop & Shop for a living ?

In article k.net, "Bill
Sohl" writes:

Actually, in really high speed optical equipment it is both
time domain and wavelengths/frequency (sometimes called color) domains.

Multiple "carriers" (different light wavelengths) on the same fiber,
right? Kinda like multiple telegraph carriers of old.

But isn't the basic modulation scheme still on-off keying of the
light, rather than shifting its color or phase?

Yes. I wasn't disputing that point, just noting that the on/off time domain
muxing isn't the only way that increased data rates are obtained.

Agreed. Just like containerized shipping has revolutionized freight
transportation, fiber optics has revolutionized communications.

There is equipment out there that operates at 1.6 Terrabits/sec.

lessee...10^12 bits/second...that's more than all of the RF spectrum
normally used for radio, right? And that's through *one* fiber that's
immune to EM fields, weather, ionospheric and tropospheric
propagation, EMI and almost everything else except shovels.

Now that's cool.

But it does have a downside. It permits a significant number of US
jobs to be outsourced to places like India (or anywhere else that has
a significant English-speaking population).

New technology almost always has a downside for some group or groups.
Would you rather such advances not become reality?

Not at all - but I'd rather have it that the downsides be explored more
thoroughly *before* they occur.

73 de Jim, N2EY