| Author | Message | ||
| Bill Butler (172.138.175.5)
Rating: N/A |
I have had trouble for three years with excessive noise in my AM radio in my shop.I even had the PUD come out and check for the source. They had no clue. I park my motor coach close to the shop and just found out that the noise is coming from the 2500 Trace inverter on the coach. Does anyone know if there is a filter available to stop this thing from broadcasting to the neighborhood? Now I can listen to Rush and Lars and Micheal Savage. What a lift. | ||
| CoryDane RTSII (66.155.188.227) Rating: N/A |
I am guessing your inverter is ModSineWave. This type of sine wave is noisey just from the wave it forms. When I worked at a power station, they had a frequency meter that was installed. It was there for a couple years with no problems. Then the station upgraded the communications to 2 way motorola radios. The radios had a noise that took a while to find but it turned out to be the frequenccy meter. Attempts were made to get a noise filter from the company that built it but it was out of warrentee. (it seems the company buys the freq meters then stores them for 10 years in a warehouse before letting anyone use them). One of our tech guys took the problem on. The company wouldn't let him do it as a job so he worked on it on his "free" time. After several attempts to quiet the noise being emitted (transmitted like radio wave, not through the wiring), he came up with a wire cage that he put around top/bot, sides and back and the wire mesh was grounded. It took care of the problem. Perhaps you could put a mesh or line the compartment with tin and ground it and see if that will stop your transmission. It may be difficult to stop the AM interferance since am is such a low band and is so easy to disrupt even lightning can interfere with it. Good luck, hope this helps cd | ||
| Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)
Rating: N/A |
If it is a dinky radio, try putting it inside a .50 caliber ammo can that will act like a Feraday (sp) cage or something. This will also maybe protect it from nuclear bombs and stuff. The problem is then you will not be able to hear the thing inside the can. He he he.  | ||
| Bill Butler (172.196.40.9)
Rating: N/A |
Thanks guys. Especially Cory. I'll need to give Henry's idea more thought. I will try the cage effect. The noise is not transmitted by wire, as it produces just as much noise on a battery radio. I don't understand about these Sine Wave inverters. BB |