Re: Re: Expanded band query...?

[dan.strassberg@att.net]

The AM band was extended from 1500 to 1600 on, I 
believe, March 31 1941, the effective date of NARBA, the 
North American Regional Broadcast Agreement, which 
caused the majority of the (then approximately 800) AM 
stations in the US, Canada, and Mexico to change 
frequencies. (Stations from 720 kHz--kcps, then--were 
not affected.) Most, though hardly all, of the frequency 
changes were upward shifts of 40 kHz or less.

I don't know when the US AM band was extended downward 
to 540 kHz. It may have been as late as the 60s. 530 kHz 
was added even later in Canada and other parts of the 
Western Hemisphere (for example, Turks and Caicos 
Islands in the Carribean). The US uses 530 only for 
TISs. The other US TIS frequencies are mostly in the 
area of 1610 to 1630 and I don't know when those first 
came into use.

Through one of those weird FCC compromises that closes 
its eyes to the facts, expanded-band stations, which 
were originally supposed to be assigned from 1610 to 
1700 were restricted to 1620 to 1700--except for one 
station on 1610 in, I think, Texas.
> Don:
> 
> The expanded AM band is from 1610-1700 kHz. 
> 
> 1540 in Albany is part of the AM band (550-1600 kHz) which has been unchanged 
> since at least the 1940's (if not earlier).
> 
> -Paul Hopfgarten
> -Derry NH
> 
> 
> Don Saklad <dsaklad@gnu.org> wrote:
> > WPTR-AM 1540 kHz ?...
> http://www.google.com/search?q=wptr+1540
>