Antenna Issues
A 270' 9" vertical delta loop is currently being used for all frequencies
below 30 MHz. The top side is 100 feet above ground. A 100-foot vertical
antenna also has been installed, but feed-line lightning protection needs
to be added before that antenna will be safe to leave connected to the receiver
24/7.
Power-Line Noise
The receiving site is far from the nearest aerial power line. Power
service to the site is buried and the incoming power line is relatively
free of RF noise. However, aerial power lines far away in the valley below
radiate significant amounts of interference. The power line noise that
can be heard probably is coming from multiple distant sources.
3995 kHz "Ocean
Waves"
Some users have expressed curiosity about the source of an occasionally
strong 3995 kHz signal that sounds somewhat similar to ocean waves. Many
international broadcasters are switching from AM to a digital broadcasting.
The 3995 kHz 'ocean wave' signal is a Deutsche Welle international digital
radio broadcast. Consider it to be DX beacon, because the skip is long if
you can hear that signal in the United States. This is a recorded example:
