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Last modified
4 May 2005 by W1DMM Copyright 1997 - 2005 Meriden Amateur Radio Club All Rights Reserved |
Notes on Downloads Antenna Modeling EZNEC is a well known and often used antenna modeling program. A sample or freeware version is available that will not handle complex antennas - beams, yagis, etc. A full commercial program is also available. The EZNEC web site has several options, downloads and further information. CW Code Practice A computer is a perfect tool to practice
Morse Code using
either the sound cad or PC speaker. Two popular programs are NuMorse
and
SuperMorse. When properly interfaced, these programs can also be used
for CW
keying into your rig. NuMorse works best with later Windows version,
SuperMorse works best with DOS and older Windows.
CW Code Send/Receive Morse Code send and receiving programs are
another popular
PC venue. CW sending is a very simple program concept only requiring a
PC-rig
interface. CW receiving, on the other hand, is more complex because of
all the
variations in incoming code levels, speed and signal form. CWTYPE (CW
send) and
CWGET (CW receive) are two shareware programs that may be used alone or
together. Also many of the popular logging programs provide for CW
sending from the keyboard.
CW Interface for PC to Rig Morse Code sending from your computer
keyboard is only limited by your typing speed. As a rule, the program
sends by closing a pair of contacts on the parallel (LPT) or Serial
(COM) port of the PC. An interface circuit is used to transfer this
closure to your rig's CW key jack. Bill W1KKF has provided the
scematic for these interfaces below. There are many variations of the
interface, so check the help file of your logging program or CWTYPE.
Several digital modes have been developed to use your PC with a sound card interface to communicate over the air in the HF and VHF bands. All require a hardware interface between your rig mic and speaker to your PC sound card. This interface may be purchased or easily constructed and may also be used for the CW software mentioned above.
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