KeithE4 said:I remember visting my grandfather in his midtown Manhattan apartment in 1968. All the big NYC stations came in loud and clear. Granted it was 40 years ago, but the noise levels can't have increased that much over the years. Urban canyons like that have always been radio hell.
Back then, the FCC actually enforsed RFI rules, obligated power companies to clean noisy lines and insulators, etc. And that was before we had computers, domestic devices with computer chips in them, CFLs, dimmers, and all manner of other devices and contraptions that emit noise on the lower freqencies.
The noise levels, in the opinion of engineers I've talked with, is many orders of magnitude greater than back in the 60's.
But since AM listening is dying, does it matter anymore?
Not really, but that is a different subject altogether. All the noise and the low fidelity and the crowding of the band have together contributed to this, too.
I take it that folks in Argentina are still listening to AM more than they are in the US and Canada.
Yeah, to some extent. But Buenos Aires has a dozen... actually, 14 fulltime 50 kw stations, none directional. No US market has that many decent signals. In fact, a major industry analyst and appraiser believes that there are only about 200 viable AMs in the whole top 100 US markets, and many markets don't have a single one.
As you've said many times, AM is dying and those stations that move to FM do better. In the case of the three stations you mention above, the move is necessary. WTOP doesn't cover the DC metro. Don't know about KIRO - is that a case of Bonneville moving all their major AM talkers to FM over the next few years (like WTOP and KTAR)?
KIRO, 50 kw on 710, is an excellent signal. But the better broadcasters believe AM has no relevance to listeners under 50... and the bad signals and noise and poor audio quality is at the root of this problem.
WIBC was on one of only four reasonably-full-market AM stations, and 1070 is highly directional at night. I grew up in the area (Bloomington) and can tell you that Indy has been a predominately FM market since the late '60s.
Actully, Indianapolis did not achieve an FM majority in listening until about 1978, a year later than the nation as an average. And there is very little radio listening at night, and WIBC covers the metro well enough at night to do well... its problem is not directionality, it is that it was an AM. They had comparable day and night audience shares, but the listeners were pretty much all over 55.
David, make up your mind. You've said repeatedly that AM is dying, and only old folks bother with it anymore. So why push for a power increase, even if it's only for the 25-or-so Class A stations that are still viable AM-ers?
I'm not pushing for a power increase. I gave an example of why a power decrease, as suggested in an earlier post, is inconceivable in today's noisy environment. There are still profitable and useful AMs, but neutering them by reduced power will just finish destroying the band.
Now, we'll use David's argument that power needs to be increased to 100 kW or more.
Nowhere did I suggest this.
There is nothing that can be done with power changes, reallocation or whatever for AM. We have two generations that grew up with no habit of AM usage, and soon there will be nobody at all who remembers when AM was all there was.