Noise noise noise, radio noise, interference that is. My house is haunted
by some kind of interference. I can't tell if it is 60 or 120 Hertz. I
tried to find a simple online (preferably Active X) sound analyzer or
oscilloscope to measure the noise, using the audio output from the Icom
R-75 to the sound card, but no luck finding a suitable program yet.

One of the sources of noise is my Son's cellphone charger, probably a
cheap switching type, it weighs nothing at all. Anyway, this throws out
interference from about 2.5 MHz to at least 12 MHz, very strong. Unplug
it, viola, the noise level drops. Yet not enough. Another takes it place,
at least in the 3.2 MHz and below, no doubt even in much higher ranges.
In an attempt to locate this rascal I selectively unplugged what I
considered likely offenders. No luck. Then I turned off all the household
power, except the circuit for the receiver, and the sound continued
unabated. I tried substitution for the transformer for the affected
radio, no difference. I awoke this morning and noticed that the noise
level was way down. Good, yet later in the day it was back. Usually it
can still be heard just as loud at midnight as it can be hear at noon.
Why the attenuation this morning is beyond me.

I have an Icom R-75 and a Yaesu FRG-100, in different rooms, with
different antennas, they are both similarly affected by the noise. One is
in the front of the house, the other the rear. Just yesterday, I
installed an outdoor antenna on the Yaesu, a yet ungrounded antenna,
stretching within 45 feet of the house. My Yaesu was the recipient of a
lightning strike that came down the tree in the rear of the yard, jumped
to the antenna wire essentially fastened to the tree, and was mostly
shunted to ground. The balance came in through the radio and did
extensive damage to some electronics in the house, yet the Yaesu survived
with a simple obliterated circuit board track.

The Icom has an indoor antenna, a simple wire that goes around the
ceiling, tucked into the ceiling/wall junction, offering around 30 feet
of wire.

The Yaesu has this antenna, coax fed,
http://www.universal-radio.com/catalog/sw_ant/2205.html 45 feet in length
for the antenna wire itself, traveling from the window to a nearby fence
post, on the opposite side of the house from the Icom receiver. The Yaesu
also has an indoor antenna, similar to that used by the Icom, except that
the room is larger therefore the indoor antenna is longer. Regardless of
the antenna, the interference is always there on either set. The
interference is also to be heard on my Sony 7600GR when battery operated.

So where does the interference come from? Neighbor? Radio signal versus
power line? Since the radio maintains an S9 noise level almost
continuously on many frequencies, how is one to listen to distant
stations?

What's my next step? I have found 2 offenders, my Son's cellphone charger
and the stupid Hughes Direct TV Receiver, sheesh, it's SO BAD it kills
the cordless phone (900 MHz digital) if you get too near it. This
afternoon, while in the backyard with the Sony, and the Direct TV
Receiver being in the front of the house, I noticed that 9115 KHz was
obliterated with noise. I went into the house, unplugged the Direct TV
receiver, and viola, the noise went away. Yet even with these unplugged,
far too much of similar noise is to be heard. I have whole house surge
protection, mounted at the electric meter, can this be a source?

Any suggestions on an effective way to track and reduce this type of
interference? If it is in the power system, what can be utilized to block
the interference, or at least attenuate it? Since I can hear it on the
battery powered Sony, most likely it is radio interference, but my house
is likely NOT the origin of the noise, where do I go next?

Thanks,


Dr. Artaud

Have you bought a new refrigerator,stove,washing machine,clothes
dryer,clock,smoke detector,flourescent lights lately that has some new
fangled electronics in the appliance(s)? Or it might be one or more of
your neighbors owns something that is causeing the interference or a
neighbors wireless computer or computer related gadget such as a
wireless computer camera.
cuhulin

wrote in news:5229-433F66C3-592@storefull-
3257.bay.webtv.net:

I've fairly much ruled out my house, since I shut every breaker off but
the one for the radio itself. Boy the interference is here with a
vengeance this morning. Always about S9, so this precludes listening to
any DX of any kind. I can't believe that manufacturers are permitted to
make equipment that creates such interference.

Our Hughes Direct TV receiver kills the 900 MHz digital cordless phone if
you get too close. It also sends out interference on 9.115 MHz,
massively. What up with that? I suspect that I will be converting back to
cable soon, if this is all Direct TV has to offer concerning the quality
of the equipment. I never had problems with my Toshiba Direct TV
Receiver. After years, it quit working and this is all I could get that
still had the enhanced Dolby Sound, with fiber optic output for the audio
signal to my receiver. I wasn't going to pay $400, so this is the TIVO
model that Direct TV offers as an introductory item for new customers or
upgraded customers to TIVO service, just $99 and a 1 Year Contract.

When I moved here 2 years ago, everything was fine, in terms of shortwave
reception. This interference is gotten out of control.

I also have a Cable Modem (which is new for me), so maybe I need to
experiment with removing the cable from the outside of the house and see
if it is bringing the interference inside.

Dr. Artaud


Have you bought a new refrigerator,stove,washing machine,clothes
dryer,clock,smoke detector,flourescent lights lately that has some new
fangled electronics in the appliance(s)? Or it might be one or more of
your neighbors owns something that is causeing the interference or a
neighbors wireless computer or computer related gadget such as a
wireless computer camera.
cuhulin

€ Dr. Artaud € wrote:

I've fairly much ruled out my house, since I shut every breaker off but
the one for the radio itself.

Just to eliminate ALL possibility that it is in your house, kill the
power to your *entire* house, using a *battery powered* receiver to see
if the noise is still there.

Good luck!

I subscribe to DirecTV and my DirecTV set top box was made by Hughes.I
haven't ever noticed it causing any kind of interference.It could be
your Hughes set top box is defective.Mine is sitting on top of a wooden
board on top of my tv set I use for watching old,old movies (Magnificent
Obsession movie is on there now) which is sitting next to another tv set
I use for my webtv.
cuhulin

On Sat, 01 Oct 2005 23:03:03 -0500, "€ Dr. Artaud €"
wrote:


Noise noise noise, radio noise, interference that is. My house is haunted
by some kind of interference. I can't tell if it is 60 or 120 Hertz. I
tried to find a simple online (preferably Active X) sound analyzer or
oscilloscope to measure the noise, using the audio output from the Icom
R-75 to the sound card, but no luck finding a suitable program yet.

http://www.universal-radio.com/catal...ters/0094.html

David wrote in news:fcmvj1pcqm88s9mgnhgjo0oecr64fvj76j@
4ax.com:

http://www.universal-radio.com/catal...ters/0094.html

Have you used it? Oddly enough, it states that it cancels S9 Noise, right
up my alley.

Dr. Artaud

www.devilfinder.com Timeave ANC-4 Filter Users Reports
cuhulin

On Sun, 02 Oct 2005 19:59:07 -0500, "€ Dr. Artaud €"
wrote:


David wrote in news:fcmvj1pcqm88s9mgnhgjo0oecr64fvj76j@
4ax.com:

http://www.universal-radio.com/catal...ters/0094.html

Have you used it? Oddly enough, it states that it cancels S9 Noise, right
up my alley.

Dr. Artaud
There's another poster here who uses them very extensively. The
science is solid and quite simple. Reverse the polarity of the local
noise and mix it with your main antenna signal and this subtracts the
local noise at your receiver.

Try it for 28 days.

I know this sounds like a odd duck but,
Halgon lights such as desk top lamp at a nieghbors house is capable of doing
just that. I dont know why, perhaps since the bulbs are not line voltage the
transformer in them is chevy quialty or something worse.
I have had problems with transfomers for the doorbell as well.
And of course the lady next door Misses nose.
Good luck, Dan


"? Dr. Artaud ?" wrote in message
...
Noise noise noise, radio noise, interference that is. My house is haunted
by some kind of interference. I can't tell if it is 60 or 120 Hertz. I
tried to find a simple online (preferably Active X) sound analyzer or
oscilloscope to measure the noise, using the audio output from the Icom
R-75 to the sound card, but no luck finding a suitable program yet.

One of the sources of noise is my Son's cellphone charger, probably a
cheap switching type, it weighs nothing at all. Anyway, this throws out
interference from about 2.5 MHz to at least 12 MHz, very strong. Unplug
it, viola, the noise level drops. Yet not enough. Another takes it place,
at least in the 3.2 MHz and below, no doubt even in much higher ranges.
In an attempt to locate this rascal I selectively unplugged what I
considered likely offenders. No luck. Then I turned off all the household
power, except the circuit for the receiver, and the sound continued
unabated. I tried substitution for the transformer for the affected
radio, no difference. I awoke this morning and noticed that the noise
level was way down. Good, yet later in the day it was back. Usually it
can still be heard just as loud at midnight as it can be hear at noon.
Why the attenuation this morning is beyond me.

I have an Icom R-75 and a Yaesu FRG-100, in different rooms, with
different antennas, they are both similarly affected by the noise. One is
in the front of the house, the other the rear. Just yesterday, I
installed an outdoor antenna on the Yaesu, a yet ungrounded antenna,
stretching within 45 feet of the house. My Yaesu was the recipient of a
lightning strike that came down the tree in the rear of the yard, jumped
to the antenna wire essentially fastened to the tree, and was mostly
shunted to ground. The balance came in through the radio and did
extensive damage to some electronics in the house, yet the Yaesu survived
with a simple obliterated circuit board track.

The Icom has an indoor antenna, a simple wire that goes around the
ceiling, tucked into the ceiling/wall junction, offering around 30 feet
of wire.

The Yaesu has this antenna, coax fed,
http://www.universal-radio.com/catalog/sw_ant/2205.html 45 feet in length
for the antenna wire itself, traveling from the window to a nearby fence
post, on the opposite side of the house from the Icom receiver. The Yaesu
also has an indoor antenna, similar to that used by the Icom, except that
the room is larger therefore the indoor antenna is longer. Regardless of
the antenna, the interference is always there on either set. The
interference is also to be heard on my Sony 7600GR when battery operated.

So where does the interference come from? Neighbor? Radio signal versus
power line? Since the radio maintains an S9 noise level almost
continuously on many frequencies, how is one to listen to distant
stations?

What's my next step? I have found 2 offenders, my Son's cellphone charger
and the stupid Hughes Direct TV Receiver, sheesh, it's SO BAD it kills
the cordless phone (900 MHz digital) if you get too near it. This
afternoon, while in the backyard with the Sony, and the Direct TV
Receiver being in the front of the house, I noticed that 9115 KHz was
obliterated with noise. I went into the house, unplugged the Direct TV
receiver, and viola, the noise went away. Yet even with these unplugged,
far too much of similar noise is to be heard. I have whole house surge
protection, mounted at the electric meter, can this be a source?

Any suggestions on an effective way to track and reduce this type of
interference? If it is in the power system, what can be utilized to block
the interference, or at least attenuate it? Since I can hear it on the
battery powered Sony, most likely it is radio interference, but my house
is likely NOT the origin of the noise, where do I go next?

Thanks,


Dr. Artaud