ECM: SSJ & SOJ FREE Note: this app is probably too large for phones but OK for tablets and PCs. For a tracking radar, enter the power in kW antenna gain in dB, and IF bandwidth in MHz. Then enter the aircraft cross sectional area in m^2 and... Read more Rating:
Flux Density & Received Power PAID This app prompts the user to enter the distance from the satellite to earth in km, the radiated power from the satellite in Watts and the gain in dB in the direction of the observer and the effective area of the receiving... Read more Rating:
Microwave Power Density FREE This app can be used to find the power density in the main beam of the antenna. The user is prompted to enter the gain of a tower-mounted antenna in dB, the transmitter power in Watts and the distance from the antenna in... Read more Rating:
Earth Station G/T Ratio FREE This app requires users to enter earth station antenna diameter (m), overall efficiency percentage, signal frequency (MHz) and system noise temperature (K). Hit "Calculate" and the app returns antenna gain in dB, Ts in... Read more Rating:
ECM J/S ratio (SOJ) FREE For ECM, this app is to calculate the J/S ratio for the stand-off jammer (SOJ) situation. In this case, the jammer is at a different location than the target. While the target is in the main beam of the radar antenna, the... Read more Rating:
Astable 555 Timer FREE Adding a second resistor Rb to the 555 timer and connecting the trigger input to the threshold input causes the timer to self-trigger and run as a multivibrator. The capacitor C will charge through Ra & Rb and discharge... Read more Rating:
System Noise Temperature FREE This is the noise model of a receiving antenna, where all of the noisy units have been replaced by one noiseless amplifier with a single noise source Ts as its input. Calculate the system noise temperature Ts after... Read more Rating:
Microwave Skin Depth FREE At microwave frequencies, use the app to determine the skin depths of aluminum (Al), copper (Cu), gold (Au) or silver (Ag) and others. Use the checkboxes next to the metal to select it, then enter the frequency (in GHz,... Read more Rating:
SCPC-FM voice S/N ratio FREE This app will determine the S/N for FM voice when the user enters the baseband maximum frequency and the RF channel bandwidth in kHz, the de-emphasis in dB and the receiver C/N ratio in dB. Carson's rule is used to... Read more Rating:
ECM J/S ratio (SSJ) FREE For Electronic Counter Measures (ECM), this app is used to determine the jammer-to-signal (J/S) ratio. For a tracking radar, enter the power in kW, antenna gain in dB, and IF bandwidth in MHz. Then enter the aircraft... Read more Rating:
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