Digital Transmission Evaluation Project MW518 (QPSK) Test.
ARMY COMMUNICATIONS-ELECTRONICS ENGINEERING INSTALLATION AGENCY FORT HUACHUCA ARIZ
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The Collins Radio MW-518 QPSK digital radio was tested in back-to-back configuration and actual link configuration for determination of transfer parameters to isolate propagation effects in link testing and the development of standard test techniques. The radio has a maximum propagation rate of 19.804 Mbs 288 voice channels at 8.11 GHz, and other rates selection of 12.553 Mbs, 6.276 Mbs and 1.544 Mbs. Ber vs RSL characteristics are displayed and analyzed as the primary mode of equipment evaluation. Actual link data is analyzed in terms of BER availability. Carrier to interference data, T-1 line tests and theoretical predictions are compared. Frequency stability, quantizing distortion, crosstalk, orderwire, signal to noise ratio, and data rate variations are measured and presented. Power spectra are displayed and compared to FCC requirements. Author
- Non-Radio Communications