Actually what I meant is the terrestrial station have a brick wall filter at the transmuter end some how to filter out everything at or above what ever tha twas my teacher said. lol1 Not us have the brick wall filter. lol! Hehahaha. On Mar 17, 2014, at 4:30 AM, Martin G. McCormick <[email protected]> wrote:
> Unfortunately, things don't work like that. We would all > have to have some sort of matching band-stop filters built in to > our heads for this to do any good and most of us are immune to > incoming radio signals anyway. We should all have a brick-wall > bologna filter to discard some of the stuff we hear on the radio > after it has been detected and decoded in the normal way but > before we start remembering it but that filter > is much more sophisticated and should be > installed between the pre frontal cortex and hippocampus so as > to prevent flooding of our memory with, well, bologna to put it > politely. > Sarah k Alawami writes: >> I thought now a days the broadcasting stations put up a brick wall filter >> at something like 800 or 900 hurts to prevent the public from >> accidentally picking up stuff like this with their teeth or electrical >> supplies that are never meant to do this. I can't remember the lecture we >> had in my class I took on such things and I no longer have all the tapes, >> but that's the one thing I remember, the brick wall filter that >> supposedly is on all am and fm transmitters. > > Broadcast transmittters are loaded with all kinds of > filters but 800 or 900 hertz is smack dab in the middle of the > human hearing range and not likely to be filtered out. > The filters actually in AM transmitters that you might be > thinking of are there to prevent the sound that the station > broadcasts from covering a wider part of the spectrum on the > dial than absolutely necessary for good fidelity. In North, > Central and South America and a few other parts, possibly, AM > stations are separated every ten kilohertz from 530 to 1700 > kilohertz in the AM broadcast band. In most of the rest of the > world, they are nine kilohertz apart so more stations can be > crammed in to the space that is already so full that night-time > listening is an exercise in futility in many places. If you've > ever been listening to a weak signal on AM and heard static that > was coming from a very strong station just up or down the dial, > you were hearing adjacent channel interference which is made > worse if the transmitter doesn't filter their audio above 9 or > ten kilohertz. Those filters are apt to be extremely tight but > it has nothing to do with radio being received on tooth fillings > or telephones. > > Martin > > ======================================= > > The Techno-Chat E-Mail forum is guaranteed malware, spyware, Trojan, virus > and worm-free > > To modify your subscription options, please visit for forum's dedicated web > pages located at > http://mail.tft-bbs.co.uk/mailman/listinfo/techno-chat > > You can find an archive of all messages posted to the Techno-Chat group at > either of the following websites: > > http://mail.tft-bbs.co.uk/pipermail/techno-chat/index.html > > Or: > <http://www.mail-archive.com/[email protected]> > you may also subscribe to this list via RSS. The feed is at: > <http://www.mail-archive.com/[email protected]/maillist.xml> > > --------------------------------------- ======================================= The Techno-Chat E-Mail forum is guaranteed malware, spyware, Trojan, virus and worm-free To modify your subscription options, please visit for forum's dedicated web pages located at http://mail.tft-bbs.co.uk/mailman/listinfo/techno-chat You can find an archive of all messages posted to the Techno-Chat group at either of the following websites: http://mail.tft-bbs.co.uk/pipermail/techno-chat/index.html Or: <http://www.mail-archive.com/[email protected]> you may also subscribe to this list via RSS. The feed is at: <http://www.mail-archive.com/[email protected]/maillist.xml> ---------------------------------------
