ferrite ring?? or Chokes??? futaba 146ip

[Italianbob2169]

I am starting my build I would like to know what do you think will work better that choke glitch kit that is sold for the esc or the ferrite ring??? What do you all think about using the 146 for the lepton??

[mudbogger2]

I am using a 146 in my lepton. It is a very nice rx and a perfect fit for the lepton.

I would use a ferrite ring before the glitch buster thingy.

[otarhan]

I'm using 139DP but no better then 146iP since you don't need more then 6 channels. By the way I had a spare one and for that reason I plugged it.

And definitely a ferrite ring to get rid of any possible glitch.

[Jafa]

I don't understand why you need a ferrite ring with a PCM RX (PPM yes sure)

[Italianbob2169]

so the pcm does not go into fai safe mode

[TMoore]

G'day Martin,

How are things down under?

Here's why I think you may need the ferrite ring.

On my Lepton I was getting hit with a Dual conversion RX and a single conversion RX both on FM but the hits were sporadic and only happened during hard collective moves. There is no telling what was causing the hits on FM RX but they were clearly there. I was running Ferrite rings.

The fact of the matter is when I converted to PCM the hits are probably still there and possibly affected the PCM RX but with PCM, unless it goes into failsafe or hold, I'm just not seeing it but based on the evidence with the FM RX I'm sure the sources of the glitching are still there.

I'm going run the rings as a precaution because if the source of the glitching were to get worse at the very least if it is an electrical source the ring is another filter in the chain. For the few pennies they cost I'm going to keep the ferrite ring on the throttle lead at any rate.

One of my biggest complaints with modern PCM RX's is the inability to download the hit counter info from the decoder.

TM

[otarhan]

Well let me try to explain why I'm using ferrite ring with PCM receiver. First of all PCM (pulse code modulation) is using microprocessor technolgy to convert pulses into digital form (means more pulses) to control servo movements which is of course more accurate then PPM since there is only 8 pulses generated by PPM technology. These pulses are sent from transmiter to the receiver on air by a certain frequency (which is the transmiter/receiver frequecy).

But there is one more source, the electrical motor, which can effect the receiver to have different commands. And this part is connected to ESC and to the receiver over the ESC. ESC generates the amount current to run the motor but in reverse it receives noise from it, for this reason I'm trying to prevent glitches produced by the electrical motor dynamics (electro magnetic frequencies, current instabilities, etc.). Actually I'm not a expert but I've checked the sites regarding this information and to prevent any glitches, they all recommend ferrite ring to create a magnetic field to stop any unwanted frequencies. I'm sure someone here can describe the theory more correctly then me!

With this configuration I'm flying near 2 GSM antenna. Well sometimes glitch occurs, sometimes not. But previously we had more glitches then today.

[Jafa]

Thanks Terry - very helpful as always

I must admit the lack of dianostic output has been frustrating me too...

I'm waiting for the plastic Lepton but based on this thread
and my experiences with the TREX
I am not thinking that it's good form to use a ferrite ring...

Cheers...