Here in Canada it's a little different....the BETS-1 rules that cover the same as "part 15" are in a classification called anouncement transmitters which was designed to get a signal to a small neighbourhood. The intent was just that...anouncements....selling houses, garage sales, etc. so that's why the higher allowable 1000uV/M@3meters for FM. The CRTC which rules programming doesn't say you can't play music or have "regular" programming as long as certain guidlines are followed.
Unfortunately the FCC doesn't have this classification so that's why part 15 was ment for yard casting and nothing else. I assume AM in the USA was intended for this purpose(announcements) which explains the higher coverage allowed.
Thelegacy and Mr Bruce could refer to this in their attemts to get change on the FM band.
Mark
On of the reasons(just an opinion) on why the FCC issues a lot more citations for FM is that the aviation band is right next to the FM band....109-130 Mhz I believe.
They are worried about interference to airplane communication interference if a plane flies over your signal area.
On AM you are nowhere near anything else and this band is not as important in their eyes.
A certified transmitter should not be allowing any interference above 108MHZ as part of the certification. In Canada you can't transmit higher than 107.5 for this very reason.
Mark
Rich, That is a fair enough request, please allow me time to look back into that database for the ones that had my concern. If I remember correctly, they were spaced out over the course of a year if not several years and I did not bookmark any of them, so it's going to take a bit of reading each one to find the ones I was referring to. What I was referring to, was actual cases not theories.
http://transition.fcc.gov/eb/FieldNotices/
Bruce.
Mark you are most likely correct that interference in the aviation band is a major issue with the FCC.
However, very few NOUO's mention that. Obviously the NOUO does not identify who the complainant is, that filed the complaint, so I suppose it could have been a local air port. I have seen mention of air ports in NOUO's But not very often. Most I believe are filed by licensed broadcast stations protecting their turf.
Bruce.
I have an aircraft band radio but have never heard anyone talk. Does my airport know about it?
Years ago when we listened to WAAF from Worcester MA at 107.3MHz, you'd often hear air-craft communications right over the station's carrier. I have a Realistic Pro-2006 scanner that covers the aircraft band and also a Realistic Pro-2026 that has a known service band scan feature built right in. You press the aircraft button and it scans the entire aircraft band.
I do pick a lot of birdies in that band, can't be sure if any are caused by FM broadcast stations though.
Bruce.
Lots of scanners have birdie issues. Its an IF issur not RF.
Yes, birdies related to the receiver.
Regarding Post #54 of this topic
Thelegacy
It appears you know who, did not like what Edward Defranco had to say about his conduct, so he flagged several posts over at RadioInsight as Inappropriate Content, had those removed and also had the topic closed as well. See you're NOT allowed to disagree with this guy, he has a temper tantrum if you do.
https://radioinsight.com/community/topic/fm-pirate-in-norwich-on-87-9/
Bruce.