User HELP for the INMOD (Frequency Intermodulation Products) Program via the NTIA/ITS TA Services web site.
INMOD HELP
INMOD is a Telecommunication Analysis Services program that
determines which potential interfering transmitter frequencies may
cause receiver intermodulation. The mixing of two or more high
level transmitter signals in a receiver can result in new signals
affecting desired in-band receiver frequencies. In this program,
intermodulation products that fall within the user specified
frequency tolerance (one-side bandwidth) of each receiver are
printed along with the intermodulation frequencies and transmitter
frequencies involved. Cumulative statistics on the number of times
each transmitter produces an interference and the number of times
each receiver may be subjected to interference are printed in a
summary table.
The user specifies the transmitter names and frequencies,
number of concurrently operating transmitters, receiver names,
frequencies, and tolerances, and intermodulation orders (harmonic
combination of transmitters that will be used to produce the
intermodulation product) to be used in the calculations.
The self interference option will
include in the list of intermodulation products that fall within
the frequency tolerance of the receiver those transmitters which
have the same frequency as the receiver.
Reference
Frequency Interference Prediction, CDC-6400 Computer Program (EGG
1183-1509, February,1971).
- Processing the data will cost $10.00.
- This will create IN*.ques files.
- All output will come to the screen and should be saved by the user.
- For each run, a INxxxMMMDDYY?.ques file will be saved containing the input data.