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[red181]

bit strange this, its happened a couple of times, with two different boats and 2.4 radio sets, one is planet t5. other turborix or something similar.
1st boat, club 500 so simple set up, brushed motor, forward only esc. It ran perfect last week, this week install fresh nimh pack, everything is dead, rx not lit up. Rebound, still the same, leave it alone, come back later, hook up battery, everything is fine?

2nd boat same as above, hook up fresh pack, rudder is working (esc has built in bec) motor dead. RX not lit up, mess around with it, try rebind, rx lights up, still no motor. Try everything, this boat runs perfect every week, but did this 2 months go. Took it home, straight out of box, try it again, perfect!!!

Its almost as though I am using crystals, and someone is on same channel. Cannot fathom it out. On both occasions, I connected battery to motor, and it ran, so its not the motors. All connections dry, clean and sound. TX batteries good, boat packs freshly charged, how strange it happens on both boats, at same time, both have cheap forward only same brand esc's,

suggestions welcome!

[cuppa]

Is this happening in only one location or both at home and at the lake?

Could there be a local RF source that could be causing interference? Can't remember where I read it but a while back I did read that somebody had intereference on 2.4ghz that caused binding problems and traced the cause to their computer's wireless network.

[Netleyned]

Thats right
Wireless routers are normally 2.4 GHz plus wireless cameras,and all sorts of other short range radio applications.
Another thing at home can be a fluorescent light fitting chucking out spurious RF.
If it happens at the lake it might be worth borrowing a different make of ESC to rule out a generic fault on two ESC's of the same make.

By the way, welcome back Red

Ned

[Circlip]

Asked this question on other forums in the past and wondered how long it would be before the "Universal" control anything 2.4 gigglies would suffer from cross contamination? Given that virtually every piece of remote technology runs on 2.4G, there has to become a saturation point. The influx of cheaper units has given the Fly/Drive/Sail communities with impunity from cross interfearence a probable false sense of security.

  The main problem with this is although it applies to a lesser sense (but there is still a monetary loss) to "Land controlled toys, whereas in the past, the Aero brigade used to fly in areas far from normal civilisation although we could still find the one obstacle for miles around, the rise of the "Park Flyer" has brought the "Instant gratification" hobbyist so much closer to a serious accident.

  Probably NOT due to this, but we had the injured cygnet story the other week. It would be interesting reading to find what is the saturation point is as opposed to surmisals.

  Regards   Ian.

[CF-FZG]

Red, how many others were operating at the time?? 

I know that Spektrum/JR's DSM2 can handle around 40 Tx's operating at the same time, (Foobar, Hitek and Mpx are around the same too), but some of the cheaper Chinese radios, (not being derogatory), can't handle the same amount of traffic, (this may have changed recently, but was valid upto last year). 

As all the sets have to check for a free channel before transmitting, you can get the same effect that you are seeing, it's not that your Rx is not bound, but that the Tx is not transmitting, hence you have no problem when you get home.

Hope this is of some help,

Mark

[red181]

thanks to all, agree with circlip, there must be some sort of satuartion point with the cheapo chinese units (I am a fan of them due to price  ), especially when saling in a public park, who knows what is in the close promiity, rc cars, rc planes and helis, plus any locals tinkering in the shed on a sunday morning, and of course the 10 or so other boaters, virtually all on cheapo chinese tx/rx combos.

Ned, yes both boats are using the same brand (cheapo again! ) esc's, 

cuppa, yes only happening  at lake, but it is only me that has had the problem,

CF, come to think of it, when I was hooking up, I reckon there where several sets already in use, within 10 feet of me.

Based on info provided, I can take another esc, if it happens again swop them to eliminate esc brand and manufactuer, also, if it happenes again, I will walk away from vicinity, and hook up away from the sailing area, see if that helps,
Thanks

[barriew]

The only time I have had a problem with 2.4Ghz was with my Spektrum DX5e and a cheapo receiver. This happened in the middle of the lake Still not sure why, but I suspect it was a faulty connection somewhere. Couldn't get it going at the lake, but was OK on the bench when I got home There were only 3 or 4 other 2.4 sets working at the time.

Barrie

[malcolmfrary]

2nd boat same as above, hook up fresh pack, rudder is working (esc has built in bec) motor dead. RX not lit up, mess around with it, try rebind, rx lights up, still no motor.

If the rudder works, that indicates that the radio part is working, since the rudder signals have to go that way,  no RX LED might (very might) be the LED itself, or a connection to it.  The motor not doing its thing at the same time could be either the motor, its wiring, the output side of the ESC, something else internal to it, or even the signal wire from the RX.  With this last, the ESC  BEC would still function and be able to power the RX and servo, but would never wake up properly due to not getting a valid signal.

[wartsilaone]

I sometimes forget to turn the Tx on before connecting the battery to the Rx. After a bit of head scratching and fiddling about disconnecting and re-connecting the battery, the system comes to life.

Ali.

[treeboa]

similar on a planet t5 set, using twin mtroniks  esc`s , both driving 400 motors, its in a sealed hull baitboat were i need to charge the batts in situ, tried it a few times pre sealing the hull, no probs, took it the local pond to try it, initially no problem, turned it off for a few mins, turning back on nothing, assumed flat batts, recharged nothing, opened the hull  no light on the rx , discconected the batt and checked - fully charged, re attached the batts after a couple hours everything working, tried it a couple of times  resealed the hull, put batt on charge - switched on at pond ---   yep nothing, took it apart again, again no binding light showing, took the esc lead off that had the power feed for the bec still connected - bingo straight into life when reconnected, changed the leads to the other esc giving power for the bec, same issue, i now had it doing the problem when i had the hull unsealed, rang perkins the planets distributorship- they blamed mtroniks, rang mtronics - they blamed the planet radio, gave up and fitted a 40 mhz radio into the hull, same connections as used originally - never given a problem since

have since played with the same setup using 27 and a 35 mhz radios, no problems at all and could not get it to replicate the issues the 2.4 ghz radio gave me ( yes i know 35 is a big no no, it was done to prove a point and not used again once tested)