When US analog TV had 3579.5 KHz color burst oscillators, 3580 and nearby was avoided because of the continuous QRM. It made sense to put CW practice and one-way bulletins on a frequency no one else wanted to use and let the operators tune their receivers to cut/notch out the tone. Good training! But with analog sets gone, or dying on converter boxes, there's less reason to avoid it; what happens to a hole on a busy band? It gets filled up!
Cortland KA5S > [Original Message] > From: Bill V WA7NWP <wa7...@gmail.com> > To: <digitalradio@yahoogroups.com> > Date: 12/17/2009 7:01:35 PM > Subject: [digitalradio] 3.580 is a busy frequency? > > Isn't 3.580 MHz about the busiest digital channel on 80 meters due to > the proliferation of cheap crystals? I'm about to suggest it's not a > good spot for more wl2k testing, which could be totally agile across > the data portion of the band, and I'd like to make sure I get my facts > right. > > Bill - WA7NWP > > > ------------------------------------
