Manual
6 
Supply current at 20V (500mW x 3 = 1.5W / 20V = 0.075 Ampere) 
Supply current at 10V (500mW x 3 = 1.5W / 10V = 0.15 Ampere) 
Supply current at 6V (2000mW x 3 = 6W / 6V = 1 Ampere) 
Tx700Lite 
Supply voltage 5-25V for 500mW power 
Supply current at 20V (500mW x 3 = 1.5W / 20V = 0.075 Ampere) 
Supply current at 10V (500mW x 3 = 1.5W / 10V = 0.15 Ampere) 
TX BATTERY LIFE 
The TX unit draw about 1.5W as mentioned at 500mW out, to find the current it draw we use ohms law. 
  Examples: Watt / Supply Volt = Current, the supply voltage can be anything from 6-25V. 
  Example with a 3S lipo: 1.5W / 11V = 0.126A 
To find the time you can run with a given battery size, take your battery mAh and divide with current usage 
also in mA. Example: 1000mAh / 126mA = 7.9 hrs, remember to keep a good safe margin, some batteries 
like LIPO do not like to be fully empty. 
When using the power-up feature, input supply power will also go up. The unit has about 30-40% 
efficiency, so an easy rule is the input usage is 3 times as much power as the output power. At 2W RF out; 
the TX unit consume almost 6W, this means 4W is radiated as heat. 
The TX unit can deliver 500mW out at only 5V as supply voltage; it will stop working at 3.3V or under. 
For 1W and 2W output, you need supply voltage of at least 6V. Maximum is 25V! 
Peak operating heat sink temperature -40C to + 80C 
Suggested Operating heat sink range -20C to + 60C 
PPM input, both main PPM and HT PPM, level 1.5Vpp to 10Vpp. 
AC or DC coupled, this means it is also JR and Graupner student signal compatible. However for serious 
stable long range flight, it is recommended to use a 3-5V DC coupled PPM signal for best stable signal to 
noise margin. 










