|Frequently Asked Questions
What is Nec2Go ?
Nec2Go is a general purpose Nec2 interface for both casual and
modelers. Nec2Go was written
in Visual Basic and Fortran.
What makes Nec2GO different from all
the other antenna analysis programs ?
Nec2Go interfaces with Nec2(as opposed to MiniNec) and is Fortran based.
code was converted to double precision(Nec-2d) and called as subroutine,
In addition, Nec2Go
has features not found in other products, such as, unlimited
segments, coax/ladder line definitions, and variable sweeping. Antenna
models are built
statements rather than a spread sheet containing 3d point data.
Segments are automatically assigned and a simple convergence command is
Sweeping of variables is a very powerful tool
and allows for rapid model creation.
context sensitive F1 Help is available for all commands.
How easy is this
product to use ? Is there an extensive time period required
order to 'bond'
with it ?
All engineering type Software requires an intial period for familiarity.
Nec2Go was designed with the user in mind. The
GUI(Graphical User Interface) is
intuitive in nature
and the use of options is minimized to reduce the confusion
factor that seems to be inherent in most software. The model definition
options that may be
invoked. For example, if the model has any wire that contacts
only 'Perfect Ground' is available.
Drop down lists are
The Nec input
requirements restrict how the model is defined.
size of 700 kB seems awfully low for such an extensive program.
small size ?
There again we designed Nec2Go for ease of use. By making do with WIndows API
rather than Visual Basic custom controls, we
are able to provide a very small
application. The graphics required to View the antenna structure
rotate/zoom were all built by hand rather than with commercial graphics
That means we do not include expensive(size
wize) extra code that you may not need.
The small size of the download is a real convenience for users with modem
access to the
web. However, Nec2Go is
not a full version NEC2 application.(see below).
What kind of support can I expect in
the future ?
We will provide free support for the life of the product. Updates will be provided
on the web whenever
fixes are available. You can only download the product once until a new
version is available.
features are built into Nec2Go that provide added functionality
The following list of features are built into the base
True Modeling by Equation using algebraic
Main, Edit, View, 2d-plot, and
3d-plot screens plus Tools and Help.
Run Output, SWR, Gain and Sweep results on Main screen.
Shift and Rotate functions applied to wire definitions.
Automatic Segment generation (Absolute segment numbers are never
Auto Segment Tapering(AST) option for fast
definitions in Wires, Sources, Loads, and Transmission Line
substitution in Sweep or View mode regenerates the model.
Unlimited Segments, Sources, and Loads to Nec.
User defined Coax entries uses the Transmission Line Equation(including
defined by Length, or Phase Length in degrees.
Ground types of: Free Space, Perfect Ground, Reflection-Coefficient,
Sommerfeld-Norton, and Ground Wave
Full View of model including rotating,
zooming and currents on wires.
2D Plot overlay of
at angles of maximum gain, or manual Az/El plots.
Auto Gain Test included in 3d View for model validation.
Coil calculator utility converts Reactance to Inductance or
LAPACK routines for
Factor and Solves improves execution times.
Windows compliant with no Dos executable.
Help for all screens and controls.
What do you mean
that Nec2Go is not a full version NEC2 ?
Using an edit script file for antenna definitions prevents some NEC2
being available. For
example, surface patches would be too complicated to describe
in an edit file. The same for Arcs, Helixes and Cylinders. (Note: The
Nec2 input file in
Files/Nec2In can be edited and modified. This file can then be
to Nec2Go, or basic
NEC2 for analysis.)
Please download the demo version to
see if the functionality in the product meets your
Nec2Go does not
have provision for the following NEC2 Geometry/Control
GA - Wire
GF - Read Greens Function file
GH - Helix/Spiral
GR - Generate
GX - Reflection in coordinate
SP - Surface Patch
SM - Multiple Surface Patch
CP - Maximum
NE/NH - Near
PQ - Print control for charge on wires
WG - Write Greens Function
What is the difference between Nec2 and
Nec2 was originally written
for mainframe computers and is about 10,000 lines of
code. MiniNec is a paired down Nec2 consisting of about 1,800 lines of DOS
Obviously a big difference in functionality. Some
features in Nec2 not present in MiniNec are:
Ground; Transmission Lines; Auto Gain Test; Reduced Segment Count