Automatic calculating tool for to find distance between Video Tx and Rx antennas

(Frequency) =	MHz
Z (System Impedance) =	Ohm
P_TX (Power delivered to transmitting antenna)=	dBm ( dBW, mW, Watt)
S_RX (Receiver Sensitivity) =	dBm ( dBW, mW, Watt)
M (Profit margin to enable digital data acceptable error)=	dB
G_TX (Isotropic transmitting antenna gain respect) =	dBi
Cables attenuation meter dB/m =	dB
G_RX (Isotropic receiving antenna gain respect) =	dBi
Cables attenuation meter dB/m =	dB

P_rad (Power radiated in transmitting antenna) =	dBW ( dBm, Watt, mW)
P_req (Power requirement in receiving antenna) =	dBW ( dBm, Watt, mW)
D (Maximum distance between Tx and Rx antennas) =	Kilometers

5.8 gHz 200mw A/V Tx

5.8 gHz 100mw A/V Tx

5.8 gHz 10mw A/V Tx

Formula:20xlog(D)=PTX-Preq+GTX+GRX-32.45-20xlog(f)

Note: These values are theoretical antenna line of sight. In reality, due to various factors, like weather conditions.

DESCRIPTIONS:

F : Working frequency of your Tx and Rx ( If you are use 1.2 or 5.8 Ghz , please write on the form as 1200 or 5800)

Z : Our systems are generally 50 Ohm.

PTx: For 1 watt 30 dBm, for 0.5 watt 27 dBm and for 10mWatt please write 10 dBm dir. For different mw Tx , please change the numbers and find your Tx output power.

SRX : For Lawmate Rx , please write -85 dBm, for different Rx , please write your receiver's sensitivity here. Every additionally 6 dBm , will give you double range.

GTX: Generally most of all transmitters sell with 3 dBi antennas. If you have 10 mW transmitter , please write here as 0.5 dBi.

GRX: Generally most of all receivers sell with 3 dBi antennas. If you have high gain Rx antennas please write your antenna gain here. (Like 8 dBi or 14 dBi)

D: Distance of your Tx and Rx antennas.