Home-page
of amateur radio station
PC4M
Previous callsign:
Please E-mail
to: pc4m@amsat.org
Welcome
on my site, the main topic is ham-radio and LF radio signals.
Last update 2003-aug-20.
My QTH is HOOGEVEEN, JO32ER
![[my map]](QTH.jpg)
The 136kHz Amateur Radio band can be found in the Low Frequency part of
the radio spectrum as indicated in the diagram below. This is a spectral
measurement from actual LF radio signals. Each signal shows as a vertical line.
The length of each line is a measure of the signal strength.
You can enlarge the picture by
double-clicking on the picture.
Communication in the 136
kHz band is mainly done by Morse code telegraphy (CW or A1A) both by hand or
very slowly (QRS CW). Slow morse code telegraphy can be decoded by computer
using FFT (Fast Fourier Transform) software like Spectogram (see the link below
for more information).
SOLAR ECLIPSE august 11th. 1999
Information
about the effect of the solar eclipse on the propagation of Low frequency
radio
signals can be found here:
http://www.xs4all.nl/~misan/eclipse.htm
And also
on:
http://www-nrpp.rcru.rl.ac.uk/RA_site/project48/infosheet.htm
You can find links here to:
Information on settings for Spectogram 5.0.8.
software
and QRS CW signal reception on the136kHz Amateur
Radio band
http://www.xs4all.nl/~misan/gram50.htm
More spectograms from Low Frequency radio signals
and 136kHz signals can be found here:
http://www.xs4all.nl/~misan/gram50+2.htm
REMEMBER PCH
A tribute to the formal Dutch
coast radio station Scheveningenradio.
General
info and PA3BSH Amateur Radio station description.
