voadist.gph

zip contains tool for Antenna Modelling with examples

VOACAP temporary TIME/DIST output parameter definitions (4nec2/fixed)
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MUF   = Maximum Usable Frequency - median (MHz)
        MUF (median) (MHz)
        1. 0  0. 30. 5. 1.
FOT   = Frequency of Optimum Transmission (MHz)
        FOT (MHz)
        1. 0  0. 30. 5. 1.
ANGLE = Radiation angle (degrees)
        Radiation Angle (degrees)
        1. 0  0. 60. 5.  1.
ANGLER= Receiver Radiation angle (degrees)
        Radiation Angle (Receiver) (degrees)
        1. 1  0. 0. 10.  1.
DELAY = Time delay (milliseconds)
        Time Delay (milliseconds)
        1. 1  0. 0. 5.  1.
VHITE = Virtual height (km)
        Virtual Height (km)
        1. 1  0. 0. 100.  10.
MUFday= % of days/month sky-wave propagation expected at MUF mode
        MUF days/month (%)
        100. 0  0. 100. 10. 2.
LOSS  = Median system loss (dB)
        System Loss (Median) (dB)
        1. 1  0. 0. 10.  1.
DBU   = Median field strength at receive location (dBu)
        Field Strength (Median) (dBu)
        1. 0  -70. 70. 10.  2.
TGAIN = Transmitter Antenna Gain (dB)
        Transmitter Antenna Gain (dB)
        1. 1  0. 0. 10.  1.
RGAIN = Receiver Antenna Gain (dB)
        Receiver Antenna Gain (dB)
        1. 1  0. 0. 10.  1.
DBM   = Median signal power at receiver (dBm)
        Signal Power (Median) (dBm)
        1. 1  0. 0. 10.  1.
SDBW  = Median signal power at receiver (dBW)
        Signal Power at Receiver (dBW)
        1. 0  -200. -50. 10.  2.
NDBW  = Median noise  power at receiver (dBW)
        Noise Power at Receiver (dBW)
        1. 0  -200. -100. 10.  2.
SNR   = Median signal-to-noise ratio (dB)
        Signal-to-Noise (Median) (dB)
        1. 0  0. 100. 10.  2.
SNRxx = Signal-to-Noise ratio (dB) at Req. Rel.
        Signal-to-Noise at Req. Rel. (dB)
        1. 1  0. 0. 10.  1.
RPWRG = Required power & antenna gain to achieve reliab (dB)
        Required Power & Antenna Gain (dB)
        1. 1  0. 0. 10.  1.
REL   = Time availability, % time SNR exceeds required SNR
        Reliability   SNR > Req SNR (%)
        100. 0  0. 100. 10. 2.
MPROB = Probability additional mode in multipath tolerances
        Multipath Probability (%)
        100. 0  0. 100. 10. 2.
SPRB  = Service probability, required reliabilty will be met
        Service Probability (%)
        100. 0  0. 100. 10. 2.
SIGLW = Lower decile signal pwr (field strength & loss) (dB)
        Signal Power (Lower Decile) (dB)
        1. 1  0. 0. 10.  1.
SIGUP = Upper decile signal pwr (field strength & loss) (dB)
        Signal Power (Upper Decile) (dB)
        1. 1  0. 0. 10.  1.
VHFDBU= VHF median field strength (dBu)
        VHF Median Field Strength (dBu)
        1. 1  0. 0. 10.  1.
VHFLW = VHF lower decile increment (dB)
        VHF LW (Lower Decile) (dB)
        1. 1  0. 0. 10.  1.
VHFUP = VHF upper decile increment (dB)
        VHF UP (Upper Decile) (dB)
        1. 1  0. 0. 10.  1.
SNRLW = Lower decile SNR increment (dB)
        SNR LW (Lower Decile) (dB)
        1. 1  0. 0. 10.  1.
SNRUP = Upper decile SNR increment (dB)
        SNR UP (Upper Decile) (dB)
        1. 1  0. 0. 10.  1.