Reading the thread TheLegacy posted a link to, covers a lot of what I have said.
Members there have said in uncertain words, without actual experimentation, not calculators and software, there is really no way to know what each situation will give you in the actual field testing results.
The problem with this corrupt country is, the NAB and those money hungry radio station owners who own 20 stations in ONE MARKET are going to say whatever they have to (unchallenged) to protect their wallets and their income.
Broadcasting was supposed to be a public service for the "people" not a scheme to get rich quick by "rich" station owners! Ask any station owner why they buy and own radio stations and they'll tell you it's to make MONEY off of the advertising, not, "We do this to make people happy at our own expense, why else?"
Clearly stated, the FCC will not act unless someone complains about you. Other-wise how would the FCC know you existed in the first place. My station was shut down because according to Bill DeFelice, a station heard about my network of stations from a listener or listeners.
Now Billy boy never told me if those listeners complained to the station that we were interfering with their signal, or if they merely asked if they owned my station. Billy boy protected the complaining station by NOT even saying who they were, so if there was interference being caused to them, we might have used filters to clean up the interference.
Mind you, since the transmitters were FCC certified Decade MS-100 transmitters, 7 of them in operation in 7 different locations, placed in multi-family apartment buildings, I think it is highly unlikely we interfered with any station to any great degree!! Perhaps one (In Building) listener, but that might be about it.
My belief is that if there was a complaint, it was a listener who was a die-hard NPR radio listener, because the channel we might have interfered with could have been 88.1MHz But, if that is the case, that station's 60 dBu contour is 30 miles west of us!! So sure some people might be able to listen here, because MOST of the low band stations broadcast in MONO not STEREO and can carry well past their intended audience. So, if it wasn't just a case of a jealous station worrying about loosing two listeners to us and there was a complaint of loss of reception due to our broadcast interfering with 88.1MHz, then that station had NO grounds to stand on, since Norwich CT is well out of their 60dBu protected contour!!
The whole problem with Hobbybroadcaster and member Ray F Burns is they could have called WXTZ (My station) at the local phone number we provided both on line and on air and worked with us to correct the problem.
No they wanted to play FCC and be like a pack of wolves or flying monkeys and come in for the kill and use us as sporting decoys!! Referring to us as the "FOX" and themselves as the "HOUNDS"
How immature!!!
Now, for clarity, the FCC was never called into the matter, because, I ordered my network SHUT DOWN and it was executed immediately at my request.
Some may ask, if I was legal, why did I order this. I did so, because this network involved 7 other innocent people, who I did not feel should be fined or harassed to benefit me!!!!
If it was a 1 watt transmitter running from my house and only I was involved, I would NOT have shut down and challenged those idiots, however, we are not just talking about me here, we are talking about 7 nice people who agreed to pick up my on-line feed and re-broadcast it to their neighbors.
To make FM stereo work better and have listeners, we placed those transmitters in LARGE apartment buildings. There were no issues with FM stereo with quieting on the first floor from the 3rd floor!
People talk a good talk about how it is impossible for a LEGAL FM TRANSMITTER to reach from the 3rd floor to the 1st floor without great amounts of interference in the usable signal and people call themselves ENGINEERS? that they do not realize that most home FM stereo systems use the AC power cord as an antenna and, if the transmitter is on the SAME SIDE of the utility supply transformer as the receiver there would almost be a DIRECT antenna connection between the transmitter and FM receiver!!! See how in denial they are??? Logic gets slammed into the ground in an effort to call any person who broadcasts on FM an illegal FM PIRATE!
It is all about the MONEY and the NAB lining their pockets with the broadcaster's money!!
The broadcasters are NOT on the air to give their services away for free. They are there to MAKE MONEY and when you take ONE DOLLAR from them all hell breaks loose and they cry like babies to the FCC.
Bruce.
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Specially if both devices are powered by AC power through either an AC to DC wall-wart or internal AC to DC down-step power transformer?