Hi Ron, A number of us on here in addition to being model railroaders are also Amateur Radio operators. We are licensed by the Federal Communications Commission and are required by law to operate our stations within strict complience of standards set forth by the FCC. Our licenses are not just "given away" and we are required to demonstrate before a testing board a competent knowledge of electronics, regulations and good radio practice before we are granted a license and callsign. Legally, a US Amateur Radio operator has no duty to protect your stereo or TV or your radio control throttle from interference which may be caused by the licensed operation of such a station within the FCC standards and regulations. But in fact, if such a device as a radio controlled throttle is causing interference to an Amateur Radio station then the device must be either modified so as not to cause interference or its use discontinued. Most often any interference to the devices you mentioned is caused by the cheap construction/design of such devices in that they are unable to reject the primary and/or harmonic frequencies produced by an Amateur Radio transmitter. 99.999999% of all Amatuer Radio operators world wide are a great bunch of folks. They will work with you in anyway possible to eliminate the problem (usually by installing RF filters or chokes on your devices at their expense). But bear in mind that they are under no obligation to do so,( at least in the US) so if you are having a problem simply approach your neighbor about it in a friendly manner and the problem will get resolved. No offense taken at what you said....just wanted to set the facts straight on this one.....Vic BTW....The Swiss authority governing Amateur Radio is even more strick than our FCC.