The Model Builder Radio feature provides all the sound modeling features required for accurate simulation of radio communications. High level radio objects such as radios, transmitters, receivers, ADF receivers, jammers, etc., allow the user to quickly model the required vehicle and ground-based radio communications. All radio objects accurately model real-world equipment with features such as:

• Correct reception of tones and voice based on tuned frequency
• Transmission/Reception and station fade based on distance and signal strength
• AM/FM transmission and band interference
• Diffraction effects
• Specific radio type modeling such as SINCGARS, HF, UHF, VHF, Satellite, and others
• Crypto and Hopset system modeling
• Tones or noises heard for encrypted radios (preamble, postamble, mis-match)
• Antennae gain based on frequency
• Standard or user definable background noise characteristics
• Lightning and background noise effects
• Communications Jamming
• Voice messages for simulation of ATIS, GCA/CCA, ground stations and background radio chatter
• Line of sight and over-the-horizon simulation
• Squelch, AGC, tuning tones
• World Positioning of radios (geocentric, geodetic)
• Sidetone Generation and Control
• Press-to-Talk, Hot/Cold Mic, Volume Control
• Communication control panel simulation
• Proper Half-Duplex operation
• Separate transmit and receive frequencies within the same radio object
• Interface with a terrain server for enhanced propagation modeling
• Passing of data messages between radio objects

In addition, a communications panel object is available for easy modeling of vehicle radio, receiver, and communication bus routing, switching, and mixing. Simulator communication panel switch states and volume settings are sent to the DACS directly, without any logic manipulation by the host computer. This information is tied directly to the communications panel object, along with the appropriate radio and receiver objects. Depending on user defined local configuration, microphone audio, as well as transmission and receive signals, are mixed and routed to the appropriate headset based on the switch and volume state information.

Interface to the individual objects is easy. High level parameters, such as tune frequency, ASCII identification string, volume setting, squelch setting, receiver/transmitter position, and power state, are sent to the DACS from the host computer. Characteristics, such as frequency matching, signal attenuation, background noise, squelch, and tone generation, are handled locally by the DACS.

See the links in the right-hand sidebar for more information about Model Builder's capabilities.