automatically send grid squares, as
well as frequency information and a
call sign or name directly from the
program. You must be careful to use
the grid square of the Web receiver
you are using since that is now your
location. To find the location of a
grid square, use www.levinecentral.
com/ham/ grid_square.php. For
example, grid square EN61ev is
Chicago.
CW, RTTY, and
BPSK
There are two programs that
work well for these modes. They are
MULTIPSK and Fldigi (Fast and Light
Digital Modem Program). Both are
free and can be downloaded from
the Internet.
Fldigi is a free program
developed by radio amateurs. Figure
5 shows Fldigi in action receiving
SITORB. It handles many other
modes as well, and has numerous
features including a built-in spectrum
display and audio filters.
You can also enter your
frequency, call sign, or name, and
enable automatic reporting to
PSKreporter. Fldigi can be
downloaded from www.w1hkj.com.
Check the Internet for
frequencies where these modes can
be found. For example, Morse can be
found around 14.000 MHz; PSK- 31
at 14.070 MHz; and SITOR at 12.577
MHz.
MULTIPSK works well for these
modes too, but it has a more
complicated user interface. If you
spend some time with it, you will find
it is easy to use. It has several other
modes and features not found in
Fldigi. MULTIPSK can be found at
www.i6kzr.it/index.php?option=com
_docman&task=cat_view&gid= 48&It
emid= 39.
FIGURE 7.
Satellite FAX
image received
with MULTIPSK.
44 June 2017
FIGURE 6. JT65 decoding window.
FIGURE 5.
SITORB data
received with
Fldigi software
decoder.
