1Eye

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I think there has been more than one thread on what happens when the Spektrum 2.4GHz receiver input voltage drops below a certain point - and I don't recall if this "feature" manifested itself into the JR-branded 2.4GHz receivers or not. What did happen is that Spectrum supposedly came out with an updated family of receivers that incorporated a quicker boot up time. Did this also spill over onto the JR-branded stuff?

My question: Is there a distinguishing mark or part number for either of these improved (Spektrum/JR) receivers I should be looking for? Thanks for any clues.

Hilarious

Wow, where have you been?

1Eye

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Obviously not paying attention to you - were your other 7 posts to date as helpful as this one? For others is there an answer or a thread I missed? I *know* they were updated/changed; how do we know which rcvr has been updated? Some sort of dot, a version number, etc. Perhaps you could share some of your omniscient knowledge ...

BarracudaHockey

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Boot the system (both tx and rx) and make sure you have a good link.

Turn off the receiver then turn it back on. It should connect almost immediately and the lights on both the main and aux recievers should flash slowly. If it does both of those things you have the latest firmware, I think its 1.6

If it takes a few seconds to come up its the original firmware and if it fast connects but doesn't flash its one version out of date.

Hilarios, if you have time to post a snide response you have time to post a proper answer, if you don't like the question please just hit the back button and move along.

Mike, best to just ignore posts like that and be patient, you'll get an answer.

onewasp

AT THE BEGINNING of Spektrum and 2.4GHz. a dieing pack or an extreme overload would indeed cause a reboot. The most famous of those was Quique at SEFF 2007.
The cause was found AND published by Horizon that very day. ( turns out it was a badly overloaded reg. system which had caused no problems prior to encountering the higher temps. experienced that day.)

Keep a decent power supply and no problem, even with those units.

Early this year Spektrum/Horizon came up with the quick time reboot that is almost instantaneous. Further, earlier units will be updated at no charge by Horizon____you must return the unit to them they will ship it back. Turn around has so far been quick.


Here is a copy of their post:
“QuickConnect” Voltage Recovery System for DSM2 AIR receivers

Performance modelers have known for some time that care must be taken to assure adequate power supplies for their airborne system. It’s true for all radios systems, but it’s doubly important when using high performance servos, flying harder maneuvers, and trying to save weight with inadequate batteries and/or regulators. For more in-depth information on the topic, go to www.spektrumrc.com.

Spektrum systems are designed with an operating threshold of 3.5 volts, and lower voltages cause the system to shut down. When adequate power is regained (usually the drop is momentary), earlier Spektrum systems re-boot and rescan for two previous channels before control is restored – a process usually requiring two-five seconds.

The new “QuickConnect” feature, however, eliminates the scanning delay and restores control almost instantly. We have been integrating this upgrade into receivers in a running change. Here’s how to identify if your receiver has “QuickConnect”:

With the system operating normally, simply switch the airborne power off, then on. If your system shows virtually no delay in regaining control, your receiver includes the QuickConnect feature.

Flashing LED’s indicate low voltage alert

QuickConnect allows most flyers to fly through common low voltage situations caused by insufficient battery “headroom” – in many cases, without knowing a problem ever occurred. As a result, Spektrum engineers decided to program the system so that the receiver LED’s would flash, should the QuickConnect feature be triggered in flight. This can also be demonstrated on the bench, by toggling the airborne power.

If your receiver is missing one or both of these features, first off, it’s important to recognize that the vast majority of flyers using “normal” servos with “normal” properly charged batteries will be unaffected by low voltage issues.

However, if you’re using numerous high-performance servos and wish to have your receiver system modified, simply return it to Horizon for free upgrading. Please return your receiver and all remotes, as all components must have the upgraded software for the new features to function. The best fix, however, remains assuring adequate power supply to the airborne system with sufficient voltage “headroom”.

Your flying success is of paramount importance to Spektrum and JR, and as the leaders in spread spectrum technology, we’re constantly moving the bar upward. Also, whenever you have questions regarding your Spektrum or JR equipment, please feel free to contact our Product Support Team at 877 504-0233.

Edit: no distinguishing mark I'm aware of. Just plug in the system (even at the LHS) bind and when the set is operatin with one or more servos turne the Rx off and then immediately back on. You will be able to ID instantly____just like the QC feature reboots.

1Eye

My Feedback: (2)

BarracudaHockey and onewasp ...

Thanks so much for your informative replies: info I can actually use. [8D]

Yep, I've paid attention to all the related discussion threads here and elsewhere but just wondered if there was an obvious indicator on the case(s). The stuff I have obtained to migrate my 9303 txr and airframes to Spektrum stuff exhibit the functionality you describe. So, even tho there're no version numbers or "dot stickers" on the case(s), I would have to say I'm confident my receivers are the latest .

The majority of my stuff is flown with unregulated dual A123 2S packs and I keep an eye on their (loaded) voltages during a flying session. I don't expect a voltage brownout but you never know ... [X(]

Thanks again.