> Date: Mon, 22 Sep 2014 11:21:29 -0700
> From: jim@audiosystemsgroup.com
> To: topband@contesting.com
> Subject: Re: Topband: BCB interference ?
>
> On Mon,9/22/2014 6:50 AM, Ed Stallman wrote:
> > I found I have a 25KW AM 1520 Khz BC transmitter 12 miles from me ,
> > is that close enough to interfere with me receiving weak signal DX on
> > the top Band ? I do hear some wide band hash 1837 to 1840 !
And Jim Brown wrote:
> That may be because they are transmitting digital radio. No filter will
> remove that -- it's part of their sidebands.
>
> 73, Jim K9YC
Jim: Digital sidebands for AM stations only extend +/- 15 kHz from the
carrier. If noise is being heard 317 kHz above the carrier, it's not due to
IBOC usage. Chuck
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|