Has anyone had problems with the statpower 40 interfering with AM radio
reception? When plugged into the house the AM radio is useless.
TIA
reception? When plugged into the house the AM radio is useless.
TIA
statpower question
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>Has anyone had problems with the statpower 40 interfering with AM radio
>reception? When plugged into the house the AM radio is useless.
>TIA
What symptoms are you experiencing? I've found the TrueCharge to be a high
quality source of DC. Are you running your genset or using the power
company? Does your AM radio work OK when the TureCharge isn't running?
Henry
>reception? When plugged into the house the AM radio is useless.
>TIA
What symptoms are you experiencing? I've found the TrueCharge to be a high
quality source of DC. Are you running your genset or using the power
company? Does your AM radio work OK when the TureCharge isn't running?
Henry
What exactly is AM? If it is a type of radio does it still exist????
Ron and Julie
> >Has anyone had problems with the statpower 40 interfering with AM radio
> >reception? When plugged into the house the AM radio is useless.
> >TIA
> What symptoms are you experiencing? I've found the TrueCharge to be a high
> quality source of DC. Are you running your genset or using the power
> company? Does your AM radio work OK when the TureCharge isn't running?
>
> Henry
>
>
Ron and Julie
> >Has anyone had problems with the statpower 40 interfering with AM radio
> >reception? When plugged into the house the AM radio is useless.
> >TIA
> What symptoms are you experiencing? I've found the TrueCharge to be a high
> quality source of DC. Are you running your genset or using the power
> company? Does your AM radio work OK when the TureCharge isn't running?
>
> Henry
>
>
>Has anyone had problems with the statpower 40 interfering with AM radio
>reception? When plugged into the house the AM radio is useless.
>TIA
Louie - I have the Statpower and have had no problems at all with any
static or interference with the AM radio. Can I assume that you mean
the dash radio that is powered by 12 volt?
Try to find out under what conditions you have the problem and keep
notes on each step. First make sure the radio works ok when the
engine is off and you are not plugged into a 120 volt source. Then
start the engine and check to see how it works. Turn the engine off
and next start the Onan with the Statpower plugged in and then unplug
the Statpower. Try these two steps again with the engine running.
Finally shut off the engine and the Onan and plug into a land line.
Try it with the Statpower plugged in and then unplugged. Repeat the
last two steps with the engine running.
You now have a whole set of conditions to compare. Report back to
the GMCnet and let us know under which conditions the radio gives the
problem and we can then some of us might have some suggestions on how
to solve the problem.
Emery Stora
77 Kingsley
Santa Fe, NM
>reception? When plugged into the house the AM radio is useless.
>TIA
Louie - I have the Statpower and have had no problems at all with any
static or interference with the AM radio. Can I assume that you mean
the dash radio that is powered by 12 volt?
Try to find out under what conditions you have the problem and keep
notes on each step. First make sure the radio works ok when the
engine is off and you are not plugged into a 120 volt source. Then
start the engine and check to see how it works. Turn the engine off
and next start the Onan with the Statpower plugged in and then unplug
the Statpower. Try these two steps again with the engine running.
Finally shut off the engine and the Onan and plug into a land line.
Try it with the Statpower plugged in and then unplugged. Repeat the
last two steps with the engine running.
You now have a whole set of conditions to compare. Report back to
the GMCnet and let us know under which conditions the radio gives the
problem and we can then some of us might have some suggestions on how
to solve the problem.
Emery Stora
77 Kingsley
Santa Fe, NM
AM an acronym for Ancient Music
- ----- Original Message -----
From: "Ronald Kazi"
To:
Sent: Thursday, July 27, 2000 10:09 AM
Subject: Re: GMC: statpower question
> What exactly is AM? If it is a type of radio does it still exist????
>
> Ron and Julie
>
>
>
> > >Has anyone had problems with the statpower 40 interfering with AM radio
> > >reception? When plugged into the house the AM radio is useless.
> > >TIA
> > What symptoms are you experiencing? I've found the TrueCharge to be a
high
> > quality source of DC. Are you running your genset or using the power
> > company? Does your AM radio work OK when the TureCharge isn't running?
> >
> > Henry
> >
> >
>
>
- ----- Original Message -----
From: "Ronald Kazi"
To:
Sent: Thursday, July 27, 2000 10:09 AM
Subject: Re: GMC: statpower question
> What exactly is AM? If it is a type of radio does it still exist????
>
> Ron and Julie
>
>
>
> > >Has anyone had problems with the statpower 40 interfering with AM radio
> > >reception? When plugged into the house the AM radio is useless.
> > >TIA
> > What symptoms are you experiencing? I've found the TrueCharge to be a
high
> > quality source of DC. Are you running your genset or using the power
> > company? Does your AM radio work OK when the TureCharge isn't running?
> >
> > Henry
> >
> >
>
>
Emery,
I have no problems with the statpower, also think that it is a very good
charger/power supply.
Will try to characterize circumstances with radio problems:
1. have tried several radio's with same results
2. vehicle radio is immune to problem with the configurations that you
mentioned
3. the noise is at many places on the am dial, from top to bottom, sounds
like a noisy spot on a short wave radio.
4. unplugged the statpower for about an hour, problem went away, at least
temporarily
5. I only noticed the problem with shore line hooked up to the house supply,
still does not effect coach radio.
6. tried several different circuits, same results.
76PB
- ----- Original Message -----
From: "Emery L. Stora"
To:
Sent: Thursday, July 27, 2000 12:04 PM
Subject: Re: GMC: statpower question
> >Has anyone had problems with the statpower 40 interfering with AM radio
> >reception? When plugged into the house the AM radio is useless.
> >TIA
>
> Louie - I have the Statpower and have had no problems at all with any
> static or interference with the AM radio. Can I assume that you mean
> the dash radio that is powered by 12 volt?
>
> Try to find out under what conditions you have the problem and keep
> notes on each step. First make sure the radio works ok when the
> engine is off and you are not plugged into a 120 volt source. Then
> start the engine and check to see how it works. Turn the engine off
> and next start the Onan with the Statpower plugged in and then unplug
> the Statpower. Try these two steps again with the engine running.
> Finally shut off the engine and the Onan and plug into a land line.
> Try it with the Statpower plugged in and then unplugged. Repeat the
> last two steps with the engine running.
>
> You now have a whole set of conditions to compare. Report back to
> the GMCnet and let us know under which conditions the radio gives the
> problem and we can then some of us might have some suggestions on how
> to solve the problem.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
I have no problems with the statpower, also think that it is a very good
charger/power supply.
Will try to characterize circumstances with radio problems:
1. have tried several radio's with same results
2. vehicle radio is immune to problem with the configurations that you
mentioned
3. the noise is at many places on the am dial, from top to bottom, sounds
like a noisy spot on a short wave radio.
4. unplugged the statpower for about an hour, problem went away, at least
temporarily
5. I only noticed the problem with shore line hooked up to the house supply,
still does not effect coach radio.
6. tried several different circuits, same results.
76PB
- ----- Original Message -----
From: "Emery L. Stora"
To:
Sent: Thursday, July 27, 2000 12:04 PM
Subject: Re: GMC: statpower question
> >Has anyone had problems with the statpower 40 interfering with AM radio
> >reception? When plugged into the house the AM radio is useless.
> >TIA
>
> Louie - I have the Statpower and have had no problems at all with any
> static or interference with the AM radio. Can I assume that you mean
> the dash radio that is powered by 12 volt?
>
> Try to find out under what conditions you have the problem and keep
> notes on each step. First make sure the radio works ok when the
> engine is off and you are not plugged into a 120 volt source. Then
> start the engine and check to see how it works. Turn the engine off
> and next start the Onan with the Statpower plugged in and then unplug
> the Statpower. Try these two steps again with the engine running.
> Finally shut off the engine and the Onan and plug into a land line.
> Try it with the Statpower plugged in and then unplugged. Repeat the
> last two steps with the engine running.
>
> You now have a whole set of conditions to compare. Report back to
> the GMCnet and let us know under which conditions the radio gives the
> problem and we can then some of us might have some suggestions on how
> to solve the problem.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
>AM an acronym for Ancient Music
>
Also a source for some news while on the road (and Rush, too).
Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
>
Also a source for some news while on the road (and Rush, too).
Dave (advisor/navigator) & Dege (ALL else), '76 Royale, Santa Barbara, CA
>Emery,
>
>I have no problems with the statpower, also think that it is a very good
>charger/power supply.
>Will try to characterize circumstances with radio problems:
>
>1. have tried several radio's with same results
>2. vehicle radio is immune to problem with the configurations that you
>mentioned
>3. the noise is at many places on the am dial, from top to bottom, sounds
>like a noisy spot on a short wave radio.
>4. unplugged the statpower for about an hour, problem went away, at least
>temporarily
>5. I only noticed the problem with shore line hooked up to the house supply,
>still does not effect coach radio.
>6. tried several different circuits, same results.
So this is a 110V radio plugged into the coach? Problem goes away when you
unplug the TrueCharge? Does the problem go away immediately or hang around
for a while. IF so, how long does it persist?
Sounds like noise on the 110V line from the TrueCharge. Since the charger
is a high frequency converter, it can inject noise into some electronic
circuits.
If this is the case, you should be able to solve the problem with an RF
line filter from Radio Shack or the like.
Henry
>
>I have no problems with the statpower, also think that it is a very good
>charger/power supply.
>Will try to characterize circumstances with radio problems:
>
>1. have tried several radio's with same results
>2. vehicle radio is immune to problem with the configurations that you
>mentioned
>3. the noise is at many places on the am dial, from top to bottom, sounds
>like a noisy spot on a short wave radio.
>4. unplugged the statpower for about an hour, problem went away, at least
>temporarily
>5. I only noticed the problem with shore line hooked up to the house supply,
>still does not effect coach radio.
>6. tried several different circuits, same results.
So this is a 110V radio plugged into the coach? Problem goes away when you
unplug the TrueCharge? Does the problem go away immediately or hang around
for a while. IF so, how long does it persist?
Sounds like noise on the 110V line from the TrueCharge. Since the charger
is a high frequency converter, it can inject noise into some electronic
circuits.
If this is the case, you should be able to solve the problem with an RF
line filter from Radio Shack or the like.
Henry
>Emery,
>
>I have no problems with the statpower, also think that it is a very good
>charger/power supply.
>Will try to characterize circumstances with radio problems:
>
>1. have tried several radio's with same results
>2. vehicle radio is immune to problem with the configurations that you
>mentioned
>3. the noise is at many places on the am dial, from top to bottom, sounds
>like a noisy spot on a short wave radio.
>4. unplugged the statpower for about an hour, problem went away, at least
>temporarily
>5. I only noticed the problem with shore line hooked up to the house supply,
>still does not effect coach radio.
>6. tried several different circuits, same results.
>
Louie - OK - we have made progress. So now we know that it is a 120
volt radio being run off the 120 volt circuits in the GMC. When you
unplugged the Statpower did the noise clear up immediately? If not,
then I would feel that it is not the Statpower causing the problem.
Another thing I'd like you to try is to turn on the radio inside the
GMC with the Statpower connected to be sure you have the problem at
that moment; and then, using an extension cord out the window or
door, set the radio outside the GMC and see what it does. If it
clears up then you probably have an electrical field inside the GMC,
perhaps the metal cage of the framework behind the walls and over the
ceiling, that is interfering with the radio's antenna circuit. If
its not the antenna then you may have a radio frequency being
transmitted somehow on the inside wiring of the GMC. Henry has
already suggested this when he advised you to use an RFI (radio
frequency interference) filter in the cord where you plug in the
radio.
Let us know.
Emery Stora
77 Kingsley
Santa Fe, NM
>
>I have no problems with the statpower, also think that it is a very good
>charger/power supply.
>Will try to characterize circumstances with radio problems:
>
>1. have tried several radio's with same results
>2. vehicle radio is immune to problem with the configurations that you
>mentioned
>3. the noise is at many places on the am dial, from top to bottom, sounds
>like a noisy spot on a short wave radio.
>4. unplugged the statpower for about an hour, problem went away, at least
>temporarily
>5. I only noticed the problem with shore line hooked up to the house supply,
>still does not effect coach radio.
>6. tried several different circuits, same results.
>
Louie - OK - we have made progress. So now we know that it is a 120
volt radio being run off the 120 volt circuits in the GMC. When you
unplugged the Statpower did the noise clear up immediately? If not,
then I would feel that it is not the Statpower causing the problem.
Another thing I'd like you to try is to turn on the radio inside the
GMC with the Statpower connected to be sure you have the problem at
that moment; and then, using an extension cord out the window or
door, set the radio outside the GMC and see what it does. If it
clears up then you probably have an electrical field inside the GMC,
perhaps the metal cage of the framework behind the walls and over the
ceiling, that is interfering with the radio's antenna circuit. If
its not the antenna then you may have a radio frequency being
transmitted somehow on the inside wiring of the GMC. Henry has
already suggested this when he advised you to use an RFI (radio
frequency interference) filter in the cord where you plug in the
radio.
Let us know.
Emery Stora
77 Kingsley
Santa Fe, NM
>Emery,
>
>I have no problems with the statpower, also think that it is a very good
>charger/power supply.
>Will try to characterize circumstances with radio problems:
>
>1. have tried several radio's with same results
>2. vehicle radio is immune to problem with the configurations that you
>mentioned
>3. the noise is at many places on the am dial, from top to bottom, sounds
>like a noisy spot on a short wave radio.
>4. unplugged the statpower for about an hour, problem went away, at least
>temporarily
>5. I only noticed the problem with shore line hooked up to the house supply,
>still does not effect coach radio.
>6. tried several different circuits, same results.
>
Louie - OK - we have made progress. So now we know that it is a 120
volt radio being run off the 120 volt circuits in the GMC. When you
unplugged the Statpower did the noise clear up immediately? If not,
then I would feel that it is not the Statpower causing the problem.
Another thing I'd like you to try is to turn on the radio inside the
GMC with the Statpower connected to be sure you have the problem at
that moment; and then, using an extension cord out the window or
door, set the radio outside the GMC and see what it does. If it
clears up then you probably have an electrical field inside the GMC,
perhaps the metal cage of the framework behind the walls and over the
ceiling, that is interfering with the radio's antenna circuit. If
its not the antenna then you may have a radio frequency being
transmitted somehow on the inside wiring of the GMC. Henry has
already suggested this when he advised you to use an RFI (radio
frequency interference) filter in the cord where you plug in the
radio.
Let us know.
Emery Stora
77 Kingsley
Santa Fe, NM
>
>I have no problems with the statpower, also think that it is a very good
>charger/power supply.
>Will try to characterize circumstances with radio problems:
>
>1. have tried several radio's with same results
>2. vehicle radio is immune to problem with the configurations that you
>mentioned
>3. the noise is at many places on the am dial, from top to bottom, sounds
>like a noisy spot on a short wave radio.
>4. unplugged the statpower for about an hour, problem went away, at least
>temporarily
>5. I only noticed the problem with shore line hooked up to the house supply,
>still does not effect coach radio.
>6. tried several different circuits, same results.
>
Louie - OK - we have made progress. So now we know that it is a 120
volt radio being run off the 120 volt circuits in the GMC. When you
unplugged the Statpower did the noise clear up immediately? If not,
then I would feel that it is not the Statpower causing the problem.
Another thing I'd like you to try is to turn on the radio inside the
GMC with the Statpower connected to be sure you have the problem at
that moment; and then, using an extension cord out the window or
door, set the radio outside the GMC and see what it does. If it
clears up then you probably have an electrical field inside the GMC,
perhaps the metal cage of the framework behind the walls and over the
ceiling, that is interfering with the radio's antenna circuit. If
its not the antenna then you may have a radio frequency being
transmitted somehow on the inside wiring of the GMC. Henry has
already suggested this when he advised you to use an RFI (radio
frequency interference) filter in the cord where you plug in the
radio.
Let us know.
Emery Stora
77 Kingsley
Santa Fe, NM
Emery,
This is not a problem inside the coach, this is a problem inside my house
with the shoreline hooked up.
I am also challenged at putting my thoughts into words so please bear with
me.
The problem clears up the moment that I unplug the shoreline . When I leave
the shoreline plugged in and unplug the statpower the interference quits
immediately.
All of the AM radios in my house are crazy with noise(like a kindergarten
playground) when the statpower is in operation.
This does NOT affect the AM radio in the coach.
I tried a portable radio inside the coach, it was fine until I got within a
few feet of the statpower, then it started making severe noise also, the
closer to the statpower, the louder the noise.
One observation that I made is :
The overheat fan on the statpower was running constantly but the statpower
display indicated only 2 amps of charge were being sent to the coach
circuitry.
The statpower cabinet(old buzzbox location) was quite warm. I have been
leaving the door to the cabinet open.
I hope that this is not a precursor to statpower failure.
Thanks for your help
- ----- Original Message -----
From: "Emery L. Stora"
To:
Sent: Thursday, July 27, 2000 7:18 PM
Subject: Re: GMC: statpower question
> >Emery,
> >
> >I have no problems with the statpower, also think that it is a very good
> >charger/power supply.
> >Will try to characterize circumstances with radio problems:
> >
> >1. have tried several radio's with same results
> >2. vehicle radio is immune to problem with the configurations that you
> >mentioned
> >3. the noise is at many places on the am dial, from top to bottom, sounds
> >like a noisy spot on a short wave radio.
> >4. unplugged the statpower for about an hour, problem went away, at least
> >temporarily
> >5. I only noticed the problem with shore line hooked up to the house
supply,
> >still does not effect coach radio.
> >6. tried several different circuits, same results.
> >
>
> Louie - OK - we have made progress. So now we know that it is a 120
> volt radio being run off the 120 volt circuits in the GMC. When you
> unplugged the Statpower did the noise clear up immediately? If not,
> then I would feel that it is not the Statpower causing the problem.
>
> Another thing I'd like you to try is to turn on the radio inside the
> GMC with the Statpower connected to be sure you have the problem at
> that moment; and then, using an extension cord out the window or
> door, set the radio outside the GMC and see what it does. If it
> clears up then you probably have an electrical field inside the GMC,
> perhaps the metal cage of the framework behind the walls and over the
> ceiling, that is interfering with the radio's antenna circuit. If
> its not the antenna then you may have a radio frequency being
> transmitted somehow on the inside wiring of the GMC. Henry has
> already suggested this when he advised you to use an RFI (radio
> frequency interference) filter in the cord where you plug in the
> radio.
>
> Let us know.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
This is not a problem inside the coach, this is a problem inside my house
with the shoreline hooked up.
I am also challenged at putting my thoughts into words so please bear with
me.
The problem clears up the moment that I unplug the shoreline . When I leave
the shoreline plugged in and unplug the statpower the interference quits
immediately.
All of the AM radios in my house are crazy with noise(like a kindergarten
playground) when the statpower is in operation.
This does NOT affect the AM radio in the coach.
I tried a portable radio inside the coach, it was fine until I got within a
few feet of the statpower, then it started making severe noise also, the
closer to the statpower, the louder the noise.
One observation that I made is :
The overheat fan on the statpower was running constantly but the statpower
display indicated only 2 amps of charge were being sent to the coach
circuitry.
The statpower cabinet(old buzzbox location) was quite warm. I have been
leaving the door to the cabinet open.
I hope that this is not a precursor to statpower failure.
Thanks for your help
- ----- Original Message -----
From: "Emery L. Stora"
To:
Sent: Thursday, July 27, 2000 7:18 PM
Subject: Re: GMC: statpower question
> >Emery,
> >
> >I have no problems with the statpower, also think that it is a very good
> >charger/power supply.
> >Will try to characterize circumstances with radio problems:
> >
> >1. have tried several radio's with same results
> >2. vehicle radio is immune to problem with the configurations that you
> >mentioned
> >3. the noise is at many places on the am dial, from top to bottom, sounds
> >like a noisy spot on a short wave radio.
> >4. unplugged the statpower for about an hour, problem went away, at least
> >temporarily
> >5. I only noticed the problem with shore line hooked up to the house
supply,
> >still does not effect coach radio.
> >6. tried several different circuits, same results.
> >
>
> Louie - OK - we have made progress. So now we know that it is a 120
> volt radio being run off the 120 volt circuits in the GMC. When you
> unplugged the Statpower did the noise clear up immediately? If not,
> then I would feel that it is not the Statpower causing the problem.
>
> Another thing I'd like you to try is to turn on the radio inside the
> GMC with the Statpower connected to be sure you have the problem at
> that moment; and then, using an extension cord out the window or
> door, set the radio outside the GMC and see what it does. If it
> clears up then you probably have an electrical field inside the GMC,
> perhaps the metal cage of the framework behind the walls and over the
> ceiling, that is interfering with the radio's antenna circuit. If
> its not the antenna then you may have a radio frequency being
> transmitted somehow on the inside wiring of the GMC. Henry has
> already suggested this when he advised you to use an RFI (radio
> frequency interference) filter in the cord where you plug in the
> radio.
>
> Let us know.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
>Emery,
>
>This is not a problem inside the coach, this is a problem inside my house
>with the shoreline hooked up.
>I am also challenged at putting my thoughts into words so please bear with
>me.
>
>The problem clears up the moment that I unplug the shoreline . When I leave
>the shoreline plugged in and unplug the statpower the interference quits
>immediately.
>
>All of the AM radios in my house are crazy with noise(like a kindergarten
>playground) when the statpower is in operation.
Louie - this is, as they say, a horse of a different color. I did
not realize until your last message that it was not a radio in the
GMC that we were talking about.
Based on your new info that the radios in your house are acting up
when the Statpower in the GMC is plugged in and the land line for the
GMC is plugged into the house I would now guess that the Statpower is
sending a signal back into the 120 volt land line and imposing a
radio frequency signal into the house wiring. It certainly seems
like a Statpower problem that shouldn't occur. Henry or Edgar do
either of you have any suggestions with this new info?
Otherwise, Louie, I'd call Statpower to talk to their tech service
people. Their web site is http://www.statpower.com/
You could correspond with them by e-mail or I'm sure that their
telephone number is on their web site.
Emery Stora
77 Kingsley
Santa Fe, NM
>
>This is not a problem inside the coach, this is a problem inside my house
>with the shoreline hooked up.
>I am also challenged at putting my thoughts into words so please bear with
>me.
>
>The problem clears up the moment that I unplug the shoreline . When I leave
>the shoreline plugged in and unplug the statpower the interference quits
>immediately.
>
>All of the AM radios in my house are crazy with noise(like a kindergarten
>playground) when the statpower is in operation.
Louie - this is, as they say, a horse of a different color. I did
not realize until your last message that it was not a radio in the
GMC that we were talking about.
Based on your new info that the radios in your house are acting up
when the Statpower in the GMC is plugged in and the land line for the
GMC is plugged into the house I would now guess that the Statpower is
sending a signal back into the 120 volt land line and imposing a
radio frequency signal into the house wiring. It certainly seems
like a Statpower problem that shouldn't occur. Henry or Edgar do
either of you have any suggestions with this new info?
Otherwise, Louie, I'd call Statpower to talk to their tech service
people. Their web site is http://www.statpower.com/
You could correspond with them by e-mail or I'm sure that their
telephone number is on their web site.
Emery Stora
77 Kingsley
Santa Fe, NM
> >Emery,
> >
> >This is not a problem inside the coach, this is a problem inside my house
> >with the shoreline hooked up.
> >I am also challenged at putting my thoughts into words so please bear with
> >me.
> >
> >The problem clears up the moment that I unplug the shoreline . When I leave
> >the shoreline plugged in and unplug the statpower the interference quits
> >immediately.
> >
> >All of the AM radios in my house are crazy with noise(like a kindergarten
> >playground) when the statpower is in operation.
>
> Louie - this is, as they say, a horse of a different color. I did
> not realize until your last message that it was not a radio in the
> GMC that we were talking about.
>
> Based on your new info that the radios in your house are acting up
> when the Statpower in the GMC is plugged in and the land line for the
> GMC is plugged into the house I would now guess that the Statpower is
> sending a signal back into the 120 volt land line and imposing a
> radio frequency signal into the house wiring. It certainly seems
> like a Statpower problem that shouldn't occur. Henry or Edgar do
> either of you have any suggestions with this new info?
>
> Otherwise, Louie, I'd call Statpower to talk to their tech service
> people. Their web site is http://www.statpower.com/
> You could correspond with them by e-mail or I'm sure that their
> telephone number is on their web site.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
=========================================
Since a portable radio picks up the noise the possibility exists that the
statpower is radiating (transmitting) RF (radio frequency) & the noise is being
picked up by the AM antenna & not coming through on the power line. However, it
could be that the noise is getting into the power line & the power line is
acting as a transmitting antenna. In which case the AC powered radios could be
receiving this noise via their antennas, not necessarily coming in via the radio
power supply. If this were the case, check the ground at the statpower & the
outlet where the shore line is plugged in. If the grounds are good, an in-line
RF filter installed at the outlet where the statpower plugs in might prove
effective.
To determine if the power lines are acting as an antenna, walk around w/the
portable AM radio & pass it along the wires using the radio as an RF noise
detector. Try orienting the radio to different angles for the best sensitivity.
As a side note, the noise would not be noticed on an FM radio due to the
"limiting" action of FM. Noise is amplitude modulated (AM). The "limiting"
action of FM (frequency modulated) chops off noise pulses. Also, as a point of
curiosity, for a second AM station to overpower another AM station operating on
the same frequency, the received signal must be 100 times as strong as the first
AM station. For a second FM station to overpower another FM station, it need be
only twice the signal strength.
As I've mentioned in previous posts, noise can be very difficult to diagnose
&/or eliminate.
- --
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
GMC Schematics
http://meltingpot.fortunecity.com/greenside/321/
GMC Calling Card Sample
http://home1.photoisland.com/servlet/com.arcsoft.LoginNew?com=arcsoftBanner&awp=index4.html&DIRECT=show&USERNAME=mistifawn&WHO=guest
ENTER Password: mistifawn
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
> >
> >This is not a problem inside the coach, this is a problem inside my house
> >with the shoreline hooked up.
> >I am also challenged at putting my thoughts into words so please bear with
> >me.
> >
> >The problem clears up the moment that I unplug the shoreline . When I leave
> >the shoreline plugged in and unplug the statpower the interference quits
> >immediately.
> >
> >All of the AM radios in my house are crazy with noise(like a kindergarten
> >playground) when the statpower is in operation.
>
> Louie - this is, as they say, a horse of a different color. I did
> not realize until your last message that it was not a radio in the
> GMC that we were talking about.
>
> Based on your new info that the radios in your house are acting up
> when the Statpower in the GMC is plugged in and the land line for the
> GMC is plugged into the house I would now guess that the Statpower is
> sending a signal back into the 120 volt land line and imposing a
> radio frequency signal into the house wiring. It certainly seems
> like a Statpower problem that shouldn't occur. Henry or Edgar do
> either of you have any suggestions with this new info?
>
> Otherwise, Louie, I'd call Statpower to talk to their tech service
> people. Their web site is http://www.statpower.com/
> You could correspond with them by e-mail or I'm sure that their
> telephone number is on their web site.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
=========================================
Since a portable radio picks up the noise the possibility exists that the
statpower is radiating (transmitting) RF (radio frequency) & the noise is being
picked up by the AM antenna & not coming through on the power line. However, it
could be that the noise is getting into the power line & the power line is
acting as a transmitting antenna. In which case the AC powered radios could be
receiving this noise via their antennas, not necessarily coming in via the radio
power supply. If this were the case, check the ground at the statpower & the
outlet where the shore line is plugged in. If the grounds are good, an in-line
RF filter installed at the outlet where the statpower plugs in might prove
effective.
To determine if the power lines are acting as an antenna, walk around w/the
portable AM radio & pass it along the wires using the radio as an RF noise
detector. Try orienting the radio to different angles for the best sensitivity.
As a side note, the noise would not be noticed on an FM radio due to the
"limiting" action of FM. Noise is amplitude modulated (AM). The "limiting"
action of FM (frequency modulated) chops off noise pulses. Also, as a point of
curiosity, for a second AM station to overpower another AM station operating on
the same frequency, the received signal must be 100 times as strong as the first
AM station. For a second FM station to overpower another FM station, it need be
only twice the signal strength.
As I've mentioned in previous posts, noise can be very difficult to diagnose
&/or eliminate.
- --
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
GMC Schematics
http://meltingpot.fortunecity.com/greenside/321/
GMC Calling Card Sample
http://home1.photoisland.com/servlet/com.arcsoft.LoginNew?com=arcsoftBanner&awp=index4.html&DIRECT=show&USERNAME=mistifawn&WHO=guest
ENTER Password: mistifawn
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
Sounds like your hitched to the house battery to run the radio. You will
need to put a electronic noise eliminator on the feed to the radio. You
can get them at most radio shacks, auto sound places. GMC manual on page
12-31 gives the reason and fixes.
>
> Has anyone had problems with the statpower 40 interfering with AM radio
> reception? When plugged into the house the AM radio is useless.
> TIA
- --
J.R. Wright
GMC GreatLakers
77 Eleganza II
Michigan
need to put a electronic noise eliminator on the feed to the radio. You
can get them at most radio shacks, auto sound places. GMC manual on page
12-31 gives the reason and fixes.
>
> Has anyone had problems with the statpower 40 interfering with AM radio
> reception? When plugged into the house the AM radio is useless.
> TIA
- --
J.R. Wright
GMC GreatLakers
77 Eleganza II
Michigan
