I've been using them for several months with no problems whatsoever. I have them in a pair of Club 40 racers, a TwinStar, and a four channel 60 size P-51. According to the reception statistics from telemetry (yes, they work with the TM1000 very well -- you have to use a Y-cable to supply power), they have no problems out to 1,200 - 1,500 feet, which is about as far out as I fly because a 50 - 60 inch wing is getting getting tough to see at that point.
I usually see a loss of one frame in 10 minutes when I'm flying 1,200 - 1,500 feet out. I've seen virtually no one else go out that far (the old-timers think I'm crazy), so most people would never see any hint of a reception problem, especially if the antennas are placed perfectly or close to it (make sure the antennas are fully in the open, that is, not right next to the battery or jammed into a bunch of wires).
They verifyably do 11 millisecond frame rates to boot. So yep, these things the best thing out there for low channel count planes, hands down.
9 of 9 found this review helpful.
Review 6 for AR400 4-Channel DSMX Aircraft Receiver
I purchased 2 of these to convert planes from 72MHz to 2.4GHz. They are now both working perfectly. Both are in electric powered airplanes. One worked fine right from the start with no issues. The other was a big challenge but after some problems and some careful testing is now working very well. Here is the story:
The AR400 I installed in an Extra 400 equipped with a Turnigy Plush 40 Amp ESC and HKSCM12-6 and HKSCM16-6 digital servos would ocassionally glitch badly with the servos running very quickly to full throw and then back to the stick setting. Two call to product support led to the conclusion that something was likely wrong with the receiver. As a retired electronics design engineer I dug out my trusty digital storage scope and looked at the +5V from the BEC in the ESC and the aileron servo signal. I noted large glitches on the +5V when the digital servos ran. Getting all 4 (2 aileron, elevator and rudder) running at the same time and sometimes the the receiver quit for a fraction of a second. (Likely the processor in the receiver was resetting as a result of the voltage glitches. So I tried the system on a separate receiver battery. No problems. Then I tried 2 different ESC. No problems. And the glitches on the +5V were greatly reduced. So the problem was with theBEC in ESC. (One of the good ESCs a later version of Turnigy Plush 40 Amp.)
So the real problem was a poor/defective ESC that allowed unacceptable glithces produced by fast digital servos on the +5V that powers the receiver and digital servos.
I have flowm the plane for about a year with the same ESC and a 72MHz receiver. Everything seemed to be wortking fine but the plane was always touchy and even with 70% expo on the ailerons it was difficult to do precise rolls. This morning, with the good ESC, the plane flew better than it ever has before. The AR400 receiver is rock solid and control is very precise.
This afternoon I went back and looked with my scope to see if the voltage glitches from the digital servos were causing any problems with the old 72MHz receiver. The answer was yes. They were causing variations in the control pulses leading to small variations in the servo positions.
Having been through this I would recommend the AR400 and I am going to get a few more to convert the rest of my planes from 72MHz to 2.4GHz. And if I see any issues I and going to try another ESC before questioning the receiver.
21 of 21 found this review helpful.
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Additional information about RGCook could not be loaded.
Posted September 24, 2012
Great review and excellent diligence on your part tracking down the issue with the BEC. It seems to be a reasonable in many cases to install a separate BEC/regulator like one made by Castle Creations - especially on planes that you care a bit about. Those dime a dozen ESC with integral BEC's seem to be a big risk on planes that your really care about. Granted, a low cost foamie - fine, run with it and if it fails, you knew the risk. But to put a cheapo ESC in a plane you love and would hate to lose over a stupid heat-related failure seems to be a bad move.
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Review 7 for AR400 4-Channel DSMX Aircraft Receiver
This is a smart move by Spektrum, to make a four-channel receiver with full range capability. This receiver fills a big niche for (serious) parkflyer pilots who insist on top-tier performance and quality. Finally, full range! Finally, just 4 channels! Most of us just want to fly, simple as that, but at a very advanced level, with no unnecessary frills. It's small, light, and with two antennae for good reception. The price is certainly reasonable, as well, at thirty U.S. dollars. It sure beats paying fifty bucks for six channels; two of which you won't be using. Fantastic. Good move, Spektrum.
22 of 22 found this review helpful.
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Posted February 25, 2013
Perfect review...I was going to write one on this product. But all my thoughts were spoken here. +1
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Ratings-Only Reviews for AR400 4-Channel DSMX Aircraft Receiver