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#1
posted to rec.boats.electronics
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Static on FM Radio
I've got excessive static on my FM radio, and discovered it's my
battery charger. Obviously, I want to keep the charger going, but wonder if anyone knows how to suppress that noise. Also, my refrigerator works on my batteries, and my charger charges them. Is this going to decrease the battery life, to be continually running the refrigeration on batteries, then charging the batteries to keep up? thanks for any information, Luc |
#2
posted to rec.boats.electronics
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Static on FM Radio
luc wrote:
I've got excessive static on my FM radio, and discovered it's my battery charger. Obviously, I want to keep the charger going, but wonder if anyone knows how to suppress that noise. Also, my refrigerator works on my batteries, and my charger charges them. Is this going to decrease the battery life, to be continually running the refrigeration on batteries, then charging the batteries to keep up? thanks for any information, Luc Hello Luc, I would guess the interference is getting into your FM radio via the 12 wiring, either by conduction or radiation from the charger. I would expect the former. The interference you describe is unusual for battery chargers and raises the question of whether it has always been that way or whether this is a recent development. Is the battery charger an old one? Do you get static on any other radios wired into the 12 volt system? It would be good to know where the problem resides and whether it is a design problem or a defective component in either the radio or the charger. That will make it easier to talk about a fix. Can you provide more info? Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#3
posted to rec.boats.electronics
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Static on FM Radio
it is certainly an appropriate question, and I wondered exactly that
same thing. I haven't noticed it on the VHF, but then I'm not listening to it for music, or news, and static might be less unusual than on an FM set. The CD/FM/AM radio is a car radio, and worked fine in my last car, but junked the car and kept the radio. Now there is static.. I'm inclined to thinking it's in the 12V wiring rather than outputting RF, but I don't kow, and don't know how to test for it either. thanks for your reply, Luc chuck wrote: luc wrote: I've got excessive static on my FM radio, and discovered it's my battery charger. Obviously, I want to keep the charger going, but wonder if anyone knows how to suppress that noise. Also, my refrigerator works on my batteries, and my charger charges them. Is this going to decrease the battery life, to be continually running the refrigeration on batteries, then charging the batteries to keep up? thanks for any information, Luc Hello Luc, I would guess the interference is getting into your FM radio via the 12 wiring, either by conduction or radiation from the charger. I would expect the former. The interference you describe is unusual for battery chargers and raises the question of whether it has always been that way or whether this is a recent development. Is the battery charger an old one? Do you get static on any other radios wired into the 12 volt system? It would be good to know where the problem resides and whether it is a design problem or a defective component in either the radio or the charger. That will make it easier to talk about a fix. Can you provide more info? Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#4
posted to rec.boats.electronics
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Static on FM Radio
luc wrote:
it is certainly an appropriate question, and I wondered exactly that same thing. I haven't noticed it on the VHF, but then I'm not listening to it for music, or news, and static might be less unusual than on an FM set. The CD/FM/AM radio is a car radio, and worked fine in my last car, but junked the car and kept the radio. Now there is static.. I'm inclined to thinking it's in the 12V wiring rather than outputting RF, but I don't kow, and don't know how to test for it either. thanks for your reply, Luc I had just assumed it was your VHF FM radio. Do you get the same static on AM and CD functions? What are you using for an antenna? Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#5
posted to rec.boats.electronics
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Static on FM Radio
What sort of charger do you have ?
Is it a simple automobile type or a proper regulated marine charger. If it a proper marine regulated type your batteries should be looked after properly and last a long time. On my boat it was the fridge which caused the interference. A 0.1 mfd capacitor across the supply close to the fridge cured the problem. Alec "luc" wrote in message ups.com... I've got excessive static on my FM radio, and discovered it's my battery charger. Obviously, I want to keep the charger going, but wonder if anyone knows how to suppress that noise. Also, my refrigerator works on my batteries, and my charger charges them. Is this going to decrease the battery life, to be continually running the refrigeration on batteries, then charging the batteries to keep up? thanks for any information, Luc |
#6
posted to rec.boats.electronics
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Static on FM Radio
"luc" wrote I've got excessive static on my FM radio, and discovered it's my battery charger. Obviously, I want to keep the charger going, but wonder if anyone knows how to suppress that noise. Also, my refrigerator works on my batteries, and my charger charges them. Is this going to decrease the battery life, to be continually running the refrigeration on batteries, then charging the batteries to keep up? thanks for any information, Luc, I have similar interference on our radio. But, I think it is only on AM ( we don't use radio much at dock with charger/refrig on). Radio is not working well, so I think I will buy a new one. I problem persists, will have to determine if it is refrig or charger. But, I think it IS the charger - If adding capacitor works for refrig noise, is there a similar solution for a two bank Truecharge marine charger? Many owners run their refrigeration using charger/batteries when at dock. But, it probably does reduce the life of the batteries being constantly charged and in use. On my boat, I installed a power supply that automatically cuts in (bypasses batteries) whenever AC is available. My compressor is a Waeco/Adler Barbour BD35 and the power supply is a Mobiltronics made specially for this compressor. The power supply actually puts out 24V and surprisingly the compressor does not mind if it gets 12v from batteries or 24V from power supply. I found the power supply for a low price on eBay. Not sure I would have spent too much for one otherwise. |
#7
posted to rec.boats.electronics
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Static on FM Radio
A proper marine regulated charger will charge at about 14v or a little less
when on continuously and will not harm the batteries. Alec "Gm1234" wrote in message ... "luc" wrote I've got excessive static on my FM radio, and discovered it's my battery charger. Obviously, I want to keep the charger going, but wonder if anyone knows how to suppress that noise. Also, my refrigerator works on my batteries, and my charger charges them. Is this going to decrease the battery life, to be continually running the refrigeration on batteries, then charging the batteries to keep up? thanks for any information, Luc, I have similar interference on our radio. But, I think it is only on AM ( we don't use radio much at dock with charger/refrig on). Radio is not working well, so I think I will buy a new one. I problem persists, will have to determine if it is refrig or charger. But, I think it IS the charger - If adding capacitor works for refrig noise, is there a similar solution for a two bank Truecharge marine charger? Many owners run their refrigeration using charger/batteries when at dock. But, it probably does reduce the life of the batteries being constantly charged and in use. On my boat, I installed a power supply that automatically cuts in (bypasses batteries) whenever AC is available. My compressor is a Waeco/Adler Barbour BD35 and the power supply is a Mobiltronics made specially for this compressor. The power supply actually puts out 24V and surprisingly the compressor does not mind if it gets 12v from batteries or 24V from power supply. I found the power supply for a low price on eBay. Not sure I would have spent too much for one otherwise. |
#8
posted to rec.boats.electronics
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Static on FM Radio
I had a lot of interference with a Cristec battery charger on both FM radio
and VHF. Cured it by replacing it with a Sterling charger. What make is yours? Phil "luc" wrote in message ups.com... I've got excessive static on my FM radio, and discovered it's my battery charger. Obviously, I want to keep the charger going, but wonder if anyone knows how to suppress that noise. Also, my refrigerator works on my batteries, and my charger charges them. Is this going to decrease the battery life, to be continually running the refrigeration on batteries, then charging the batteries to keep up? thanks for any information, Luc |
#9
posted to rec.boats.electronics
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Static on FM Radio
In article ,
"Phil Stanton" wrote: I had a lot of interference with a Cristec battery charger on both FM radio and VHF. Cured it by replacing it with a Sterling charger. What make is yours? Phil Most of the "Noisy" Marine Battery Chargers, use an SCR to control the charging duty cycle. These are notoriously noisy as the SCR "Rings" when triggered, causing the noise. OEM's like this system because it is CHEAP to build. Any good Linear Regulated Charger will be much quieter, if not silent. If noise is your problem, spend you money on a good Linear Regulated Charger. Bruce in alaska -- add a 2 before @ |
#10
posted to rec.boats.electronics
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Static on FM Radio
Bruce in Alaska wrote: In article , "Phil Stanton" wrote: I had a lot of interference with a Cristec battery charger on both FM radio and VHF. Cured it by replacing it with a Sterling charger. What make is yours? Phil Most of the "Noisy" Marine Battery Chargers, use an SCR to control the charging duty cycle. These are notoriously noisy as the SCR "Rings" when triggered, causing the noise. OEM's like this system because it is CHEAP to build. Any good Linear Regulated Charger will be much quieter, if not silent. If noise is your problem, spend you money on a good Linear Regulated Charger. Bruce in alaska -- add a 2 before @ Not sure the details of my charger but it's a West Marine charger and it is the culprit putting noise on the FM music stations. I turned it off, and bingo! Noise begone! But, obviously, I'm going to continue charging my batteries. So I can find out the details and change out to a Linear Regulated Charger. Another question raised by the first person who responded to this post, is the noise via the wiring, or is it RF output that the FM is picking up? thanks Luc |
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