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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › how about signal loss.. instead of brown outs.. how do you make it happen?
12-10-2013 12:37 PM  5 years ago
Craigdieslemac

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Valdosta, Ga USA

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As far as I know, the vbar doesn't log anything, but will give real time info.. Which is only useful if you have the Bluetooth module. Even with that, I don't know if it would provide that info.Aut viam inveniam aut faciam
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12-10-2013 12:46 PM  5 years ago
Retired2011

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Lee's Summit, MO

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The Vbar logs almost everything...
I just don't know for sure about signal strength.
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12-10-2013 12:48 PM  5 years ago
Craigdieslemac

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How do you read the log?Aut viam inveniam aut faciam
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12-10-2013 12:58 PM  5 years ago
Retired2011

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Lee's Summit, MO

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Download it to computer - .PDF file
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12-10-2013 01:03 PM  5 years ago
Craigdieslemac

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I'll have to check it out, I thought it just gave real time info. Lookit that! It's only 8am and I learned something new!Aut viam inveniam aut faciam
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12-10-2013 01:03 PM  5 years ago
Retired2011

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Lee's Summit, MO

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If I did it right here is a file from mine this summer...

https://rc.runryder.com/gallery/98226/L400-blue_log.pdf
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12-10-2013 01:04 PM  5 years ago
dkshema

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Cedar Rapids, IA

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What about having Spektrum/JR sats with the antennae oriented 90 degrees from each other?
I see Spek. recommends it...is it really advisable?
Yes. It is a necessary practice and not all that difficult to do.

As the Nike folk say, "just do it".
-----
Dave

* Making the World Better -- One Helicopter at a time! *

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12-10-2013 01:07 PM  5 years ago
Retired2011

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Lee's Summit, MO

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Yes. It is a necessary practice and not all that difficult to do.
As the Nike folk say, "just do it".
I do have mine that way...just wondering if it was something I should continue.
Thanks, Dave!
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12-10-2013 01:34 PM  5 years ago
rpat

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Weirton, W. Va.

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I tell you what not to start any controversy but I am glad that I have stuck with Futaba. I may be wrong but I don't recall any brown outs with Futaba equipment, I do remember that with the first receivers that they came out with you had to keep them out of the sun.trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2
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12-10-2013 01:43 PM  5 years ago
Four Stroker

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Atlanta

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I got Futaba brownouts using a Futaba PS-10 regulator and Futaba 6008HS receiver. Very entertaining - drop 3 feet and spin around 90 degrees before it rebooted. PS-10 was recalled. New one is better.
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12-10-2013 01:47 PM  5 years ago
rpat

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OK so Futaba did have them, I guess that I never experienced it.trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2
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12-10-2013 01:54 PM  5 years ago
Craigdieslemac

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Valdosta, Ga USA

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I've never experienced any loss of signal or power. I was trying to create a loss of signal, mostly because the way I have my sats positioned. They are abnormal for most people, as they are inside the frame, 180 out from each other, and they are pretty close together.Aut viam inveniam aut faciam
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12-10-2013 01:56 PM  5 years ago
Four Stroker

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Atlanta

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Any digital radio will reboot if the power drops far enough for long enough. Unfortunately for Spektrum, 4.8 volt NiHM batteries will drop far enough and long enough with digital servos AND the original receivers took 3~5 seconds to reboot. Especially Eneloop AA packs. Then there was the full down elevator at fringe reception s/w bug. I have a real hard time convincing plane guys not to use Eneloop packs in Heli's. Futaba also had the zero QUID thing in the 7C/TM7 and a batch of recalled TM14's. Old guys remember all of these things.
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12-10-2013 02:36 PM  5 years ago
Heli_Splatter

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USA

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Spektrum/JR Binding - Failsafe Settings
Many people either don't know about binding the receiver multiple times or don't care.

When you first bind the receiver to the radio, it is done to establish communications. It also sets the fail safe settings in the receiver.

After all of your radio setup work is done, you need to bind the receiver again to update the fail safe settings.

You should read the receiver manual carefully because there are two fail safe setting methods...

Bottom line; after making radio changes, I bind the receiver. It never hurts.
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12-10-2013 02:47 PM  5 years ago
Craigdieslemac

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Valdosta, Ga USA

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I've never done that either.. But I will today. Couldn't hurt anything!Aut viam inveniam aut faciam
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12-10-2013 03:09 PM  5 years ago
Heli_Splatter

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USA

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Read the manual and inserts that come with the receivers about the fail safe methods.

It is important because if you have a loss of signal, the fail safe settings are used to fly the aircraft. It is especially important with the servo direction, limits, subtrim... throttle setting.

As you say, it never hurts to bind. In the case of helicopters, I install a 6inch extension from the bind channel and double side tape it to a landing gear. Easy to bind without tearing the receiver out of the heli.

I have a couple of logging devices that I use when I first setup an aircraft.

I am sure that the Futaba guys have some procedure for creating the failsafe settings.
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12-10-2013 03:19 PM  5 years ago
Retired2011

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Lee's Summit, MO

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I don't know about other brands but with Vbar, rebinding after making program changes is absolutely unnecessary.
Binding is only to establish communication between the TX and the sats, the bind is stored in the sat, not the Vbar.
However, I have to agree...it's easy and doesn't hurt anything.
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12-10-2013 03:21 PM  5 years ago
Santiago P

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Dayton

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In case some of you are not clear,

Brown-Outs (BO) are power issues, not a Spektrum or Futaba, or an RX brand issue.

We all had BOs the before 2.4. We just did not notice them as much becasue RX did not go throght a linking/hand shake stage.

When 2.4 came out, brown outs became more visible because RXs took a few seconds to link. In the FM/PCM era a brown out felt just like a quick glitch or fade out.

Provide good, reliable, redundant power to your control systems REGARDLESS OF BRAND and you will not see 90% of the issues other guys experience.

For RX signal clarity, get those Rx dipoles away from the frames, separated and oriented per MFG recomendations and your heli will be a happier heli; at least until your brain brown's out...

Santiago
Team Minicopter - PeakAircraft.com
FUTABA.USA - Team Kontronik - Scorpion Motors-
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12-10-2013 04:08 PM  5 years ago
rcflyerheli

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Granbury, TX USA

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Vbar most definitely does record logs. One good item it records is satellite antenna switching. If you are getting a bunch of this message in your readouts, you have something interfering with your signal reception, either a signal blockage or a antenna wire or antenna going bad.

The older DSM2 receivers would signal a brown out and reconnect by flashing. The flashing told you that it had lost power to the RX and then come back up on the same two frequencies as it was originally connected to the TX with. Since the DSM2 doesen't channel hop like the DSMX, when it reconnects, it stays on the same old freqs.

We used to get this all the time when flying indoor foamies, as we would have a pocket full of packs, and just hot swap them and get back into the air without ever turning off the TX. Usually it didn't have any bad effects, but occasionally the whole rc link would fail about 10 seconds after we launched the plane, and of course it resulted in a crash. DSMX resolved that issue completely.
Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
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12-10-2013 04:46 PM  5 years ago
Ace Dude

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USA

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Brown-Outs (BO) are power issues, not a Spektrum or Futaba, or an RX brand issue.

We all had BOs the before 2.4. We just did not notice them as much becasue RX did not go throght a linking/hand shake stage.

When 2.4 came out, brown outs became more visible because RXs took a few seconds to link. In the FM/PCM era a brown out felt just like a quick glitch or fade out.
+1

The components in our receivers have a minimum operating voltage. When the voltage sags, due to high load and/or poor high impedance batteries (many NiMh) that could not supply enough voltage under load the voltage fell below the minimum operating voltage for these components they stopped working. This effective shut down the receiver. When the load was reduced the voltage sag was removed and the components started operating again.

If you search for some posts here you'll find some folks discovered the Eneloop packs don't make good receiver packs.

Additional information on the importance pack impedance can be found here:

http://www.hangtimes.com/sportrxpacks.html
  
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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › how about signal loss.. instead of brown outs.. how do you make it happen?
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