"Jim-NN7K" . wrote in message
...
And, another incident- in
Portland, had a Phone line to Eugene, passed KXL (1190KHz?) radio station-
Had enough leakage, that it got into the baseband of our microwave system!
we wern't using baseband that high, but when FCC inspected our El Paso,
Texas facility, cited us for re-transmitting that signal, on our microwave
system! Take it to the bank-- dumb things happen! Jim NN7K

KXL (5000 watts) is at 750 KHz. KEX (50,000 watts) is at 1190 KHz. If your
system was anywhere near I-205 at Clackamas, then it would not surprise me
that KEX would get into it. Once I was driving by their tower site and
decided to be funny. It was in my 1969 Pontiac wagon. I commented to my
passengers that "I bet I can really get a good signal from KEX right now.."
and punched the button for KEX on my car radio.. which greeted me with total
silence! I just happened to punch that button while in the strongest part of
their pattern, and it took out the RF amp and local oscillator in the radio
(damn, that was a good radio, too...)

Brenda Ann wrote:
"Jim-NN7K" . wrote in message
...
And, another incident- in
Portland, had a Phone line to Eugene, passed KXL (1190KHz?) radio station-
Had enough leakage, that it got into the baseband of our microwave system!
we wern't using baseband that high, but when FCC inspected our El Paso,
Texas facility, cited us for re-transmitting that signal, on our microwave
system! Take it to the bank-- dumb things happen! Jim NN7K

KXL (5000 watts) is at 750 KHz. KEX (50,000 watts) is at 1190 KHz. If your
system was anywhere near I-205 at Clackamas, then it would not surprise me
that KEX would get into it. Once I was driving by their tower site and
decided to be funny. It was in my 1969 Pontiac wagon. I commented to my
passengers that "I bet I can really get a good signal from KEX right now.."
and punched the button for KEX on my car radio.. which greeted me with total
silence! I just happened to punch that button while in the strongest part of
their pattern, and it took out the RF amp and local oscillator in the radio
(damn, that was a good radio, too...)



Desense doesn't do anything to the local oscillator. It is merely a
nearby (still in the same bandpass as the AVC detector) undesired signal
strong enough to make your AVC turn the gain way down.

Brenda Ann wrote:
"Jim-NN7K" . wrote in message
...
And, another incident- in
Portland, had a Phone line to Eugene, passed KXL (1190KHz?) radio station-
Had enough leakage, that it got into the baseband of our microwave system!
we wern't using baseband that high, but when FCC inspected our El Paso,
Texas facility, cited us for re-transmitting that signal, on our microwave
system! Take it to the bank-- dumb things happen! Jim NN7K

KXL (5000 watts) is at 750 KHz. KEX (50,000 watts) is at 1190 KHz. If your
system was anywhere near I-205 at Clackamas, then it would not surprise me
that KEX would get into it. Once I was driving by their tower site and
decided to be funny. It was in my 1969 Pontiac wagon. I commented to my
passengers that "I bet I can really get a good signal from KEX right now.."
and punched the button for KEX on my car radio.. which greeted me with total
silence! I just happened to punch that button while in the strongest part of
their pattern, and it took out the RF amp and local oscillator in the radio
(damn, that was a good radio, too...)



Correct-- this from memory of around 35 years ago (Comm Tech for
Southern Pacific (Now Union Pacific)-- Main Line ran real close to their
towers! Signal came from a microwave carrier, installed as should be (
Balances wires, shield on one end grounded- had to ground BOTH ends,
to get rid of signal! Also had to string Grounds from the clock tower
at Union Station, a pretty good trick, as high as it is! Jim

"Brenda Ann" wrote in message
...

"Jim-NN7K" . wrote in message
...
And, another incident- in
Portland, had a Phone line to Eugene, passed KXL (1190KHz?) radio
station- Had enough leakage, that it got into the baseband of our
microwave system!
we wern't using baseband that high, but when FCC inspected our El Paso,
Texas facility, cited us for re-transmitting that signal, on our
microwave system! Take it to the bank-- dumb things happen! Jim NN7K

KXL (5000 watts) is at 750 KHz.

KXL has been 50 kw days at least back to 1972... that is as far as I wanted
to check it in the Jones Log and Broadcasting Yearbook.

http://www.davidgleason.com/Archive-...0Tennessee.pdf

"Jim-NN7K" . wrote in message
...
Mike- Tho this NOT about R.F., it is about induction-

I agree. And while I realizeit's quite possible to get 'shocks' off an
induction
coupling that essentially goes to a high impedance, it's a far cry from
being
able to 'power a house' with a broadcast transmitter that wasn't designed
for the purpose. Yes, Tesla lit up bulbs, in one case a reported 50 miles
from his transmitter site, but that was with a setup specifically geared to
transmit power with brute force, with fairly huge receiving antennas
specifically designed to pull the power from the broadcast wave.

And before someone brings up RFID tags... Tags are DESIGNED to work in
the RF field. They actually couple magnetically like a transformer to the
readers
antenna. But realize how fast the field falls off and what limited range
they have.

But actually, in reference to the original comment, I believe IF someone did
pull power from the air, it WOULD degrade the broadcast signal.

Mike

Mike Y wrote:
And while I realizeit's quite possible to get 'shocks' off an
induction
coupling that essentially goes to a high impedance, it's a far cry from
being
able to 'power a house' with a broadcast transmitter that wasn't designed
for the purpose.

The original story that I heard about 40 years ago is
that it involved 60 Hz high-voltage power lines. A
farmer is supposed to have built an induction coil
in a shed directly beneath the power lines and picked
up free energy.
--
73, Cecil http://www.w5dxp.com