New Spektrum DX3r Observations

[BrianG]

Jhautz: I was thinking new Spektrum vs old older Spektrum, not other radios. That makes sense, older technology is almost always less efficient than newer.

The size and weight is certainly a lot less than the DX2/3/2.0/3.0! Not only that, but the reduced weight on top makes it less top heavy - not that the old one is bad, you just notice the difference when holding both.

The 2.4 security is nice, and it's sure easier than carrying crystals when at the races. However, the main reason I got mine is the 30 model memory.

MetalMan: I've already thought of that. I am a little hesitant because what if I do accidentally leave it on and don't hear the buzzer? I would rather have an LVC than a LVW (low voltage warning). The latter is passive protection, the former is active protection. I have a LVC circuit idea that I might try.

[MetalMan]

Originally Posted by BrianG

MetalMan: I've already thought of that. I am a little hesitant because what if I do accidentally leave it on and don't hear the buzzer? I would rather have an LVC than a LVW (low voltage warning). The latter is passive protection, the former is active protection. I have a LVC circuit idea that I might try.

I thought of it first lol. This is what I've been using in my Nomadio React for almost a year now. At one point I did accidentally leave it on before installing the low voltage alarm, and puffed a 2s 2100mah pack, but I had another. It's been fine for quite some time now, especially since after killing that first pack I also installed an external switch between the Lipo and the regulator.

[lincpimp]

Or, you could use a pair of cell phone batteries, as they have an lvc built in. You would still need a voltage regulator to get it down to the correct voltage. Sike knows more about this than I, but I have been using nokia cells (3s) in my 2pl and 3pm for a while. They are only 1000mah, but are super light, and I have a few packs made up so that I can swap them out. i have also seen some of the voltage regulators that have active lvcs built in. They are designed for lipo receiver packs in nitro vehicles, but should work as well in a radio.

I also just made a lipo pack for my M8 radio. Used 3 2500mah 18c cells that I had laying around, as they fit the strange battery tray perfectly. That radio has a 9.1v buzzer built in. It is not an active lvc, but hopefully I do not leave it on... Do you think that 18c is a bit much for a radio battery...