### EMC Bayswater has collated a few online free resources here for your convenience.

**RF Calculator**

The RF calculator has the following excel spreadsheet calculators:

Attenuators, Bandpass Filters, Cascaded Components, Coils / Inductors, Delta-Wye (Resistors) Directional Couplers, Doppler Shift, Highpass Filters, Lowpass Filters, Mixer Frequency Conversion, Near / Far Field, Noise Figure↔Temp, Path Loss 1-Way, Path Loss 2-Way, Propagation Time, Radar Blind Speed, Radar Horizon / Line of Sight, Rectangular Cavity, Skin Depth, Smith Chart, VSWR↔RL↔Gamma Voltage Divider, Voltages & Power – Vrms, Vavg, Vpk.

**Basic unit conversion calculator**

The RF calculator has the following excel spreadsheet calculators:

Find Free Space (clear line of sight) Path Loss, Convert watts to dBm and dBW, Convert dBm to watts, Convert uV to dBm (50 ohm impedance), Convert dBm to uV (50 ohm impedance), Convert dBW to uV (50 ohm impedance), Convert dBuV to dBm, Calculate Vertical Ant – Ant Isolation (dipole up/down gain = 0), Calculate Horizontal Ant – Ant Isolation (dipole left/right gain = 0), Convert dBm and Freq. to Field Strength in dBu and uV/meter (relative to a dipole), Calculate distance to horizon (smooth earth).

**EMC Formulas**

A PDF document containing many of the commonly used formulae including:

Log to linear & linear to log voltage conversions, Log to linear & linear to log power conversions, Log to linear & linear to log current conversions, Log to linear & linear to log impedance conversions, Term conversions such as dBm to dBuV etc, RF related, field strength & power Denisty, Antenna (Far field), Amplitude modulation, Current Probe, dB Calculations, VSWR/reflection coefficient / return loss.

*EMC Bayswater does not take any credit or responsibility for any of the above Excel spreadsheets or resources. *

**Australian Spectrum chart 2013**

This is a wall chart with graphical Australian frequency spectrum with allocations.

For further information please refer to the the following website, click here

**Australian Spectrum 2013**

This is the accompanying Australian spectrum general details with allocations.

For further information please refer to the the following website, click here