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What are intermodulation products?
Intermodulation products are new frequencies that
can be created when two or more
radio signals mix together. These newly created frequencies can interfere
with existing radio frequencies.
Why do I need to calculate intermodulation
products?
Intermodulation products should be calculated before installing two or more
radio transmitters at a site in order to determine what new frequencies may
be created by intermodulation. These new frequencies can cause serious interference
with the site radio receivers and other nearby receivers. It is also a requirement
by many frequency spectrum-regulating agencies to ensure interference is not
created for other existing radio stations.
Will "F-Intermod" provide
me with a list of these intermodulation frequencies?
Yes it will provide a list of possible
intermod frequencies that may be created, for up to 10000 radio transceivers at a site.
Some output files are too large to open with
Microsoft Excel or Word how can I access them?
It is common to have large output files
that contain many intermod hits when large number of
input frequencies are used. We suggest using other
applications to open these large files such as Textpad
which can be found at
www.textpad.com .
Will "F-Intermod"
calculate the power of these intermodulation frequencies?
Yes, if the nonlinear coefficient is know.
The nonlinear coefficient can be calculated by measuring
a harmonic or intermod product. See the manual for
details. Else if the nonlinear coefficient is not
know, you can still use the intermod power outputs as
relative values to determine which intermod frequencies
are the worst offenders.
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