Originally Posted by
Desertlakesflying
Most of the thing I have seen on Spektrum radios have to do more with too little power to the receiver than an actual radio issue
Correct. Loss of voltage at the Rx bus where it is needed is the definition of "brownout". It has nothing to do with the equipment,design or performance. It also has nothing to do with the integrity of the RF connection.
"Power" is a broad term. A minimum voltage must be maintained or the Rx will reboot. The Rx must see good signal from remote(s) to connect when it boots or reboots.
Any lead from source to load is going to have some resistance. With enough load(current/amps) you are going to have some voltage drop from the source(pack,reg,etc) to the load(Rx/servos). Depending on the resistance that drop may be unacceptable and you risk "brownout". This is a setup issue.
Normally if you do have a reboot from loss of voltage when the load is taken off the voltage rebounds and reboot is almost instant.Then it reconnects. If the model has drifted off attitude your probably already holding the sticks in a position to correct when it connects. The surge load may easily be enough to suck the voltage down again and force another reboot and you are stuck in a viscious cycle all the way to the ground. If you are having trouble and its stubborn to connect in the first place this is often a sign of a marginal remote connection. If it reboots and then is stubborn to connect because you didnt remedy the stubborn connection problem it may refuse to connect all the way to the ground.
If you have a marginal remote connection and it becomes intermittent inflight the remaining Rx(s) may end up getting shadowed and you end up in a Hold situation without control until the model happens to turn and reexpose the functioning antennas to the Tx signal.Hopefully before you reach the ground.
There are several scenarios possible and are not an inherent flaw in the system itself. When you Plug and Pray sometimes the prayer doesnt get answered. You need to need to be able to track the important parameters of operation like Rx voltage and antenna/RF performance.
Like I said before many times from personal experience. There are signs that something is going wrong long before a total failure occurs.
Knowing how the system works and how to make it do what its supposed to are the burden of the user. Immediate catastrophic failures are rare.