I have a question that I have not been able to find an answer to. As the voltage drops on your receiver battery, does your effective range of flight decrease? I've always assumed that if I have enough voltage to operate the servos, then there is enough voltage for the receiver to operate effectively (i.e. as long as I can still see the airplane the receiver is within range of the transmitter). I would like to know if that is a good assumption. Any help on this subject would be greatly appreciated and the more detailed the explanation the better.

Thanks,
Gary

p.s. How about the effectiveness of the transmitter as its voltage decreases?

should be no difference the transmitter is doing the sending rx just picks up the signal when it reches the antena,that is why in the old days you flew with the tx pointed directly at the airplane as that was the weakest signal from the tx.if the plane was out of range you could turn the tx mitter and the stronger signal emmitting from the sides would allow you to regain control and fly back in range.

The voltage on the receiver does not effect the range. All the better receivers have a voltage regulator built in which limits the voltage to the rf section to about 3.8 volts (never measured the exact value) and that is the voltage the active part of the receiver sees as long as the voltage on the input is that high or higher. Increasing the voltage just causes the receiver electronics (the voltage regulator) to get hotter. Note that this does not limit the voltage the servos see as they work off of the unregulated voltage.

If you are running a 4.8volt or 6 volt pack your voltage cant drop that low (3.8v) so you would have lost servo control long before your receiver lost juice.

Gringo, I'm afraid you do not understand how voltage regulation works. What happens is that the voltage to the working portion of the rf detectors and decoding is clamped via a control circuit (usually just a Zener and capacitor with proper resistor) and the voltage at that point in the circuit is held to the regulated voltage. All other parts of the circuit such as the servos see the full battery voltage at all times. If they did not regulate the voltage to the rf section you would have glitches all over the place due to the AGC voltage shifting every time a servo drew a spike of current or the load shifted suddenly.

hi

most rc receivers reduce the voltabe from the battery pack thru a voltage regulator to about 3.2 volts, so I have read. however I usually quit flying when and it my airborne pack reaches around 4.4 volts<4 cell pack>, about 1.1 volt per cell. the battery manufacturers usually recommend you not take a nicad below 1.1 volt per cell due to dangers of reverse polarity. how critical?...don't really know.

good luck and happy flying

pt19 flyer