Autcom - Noise at low revs
 

I have an autocom system installed on the bike and everything has been working well, however yesterday I went out with the other half on the back and we were getting some very bad crackling/popping noises through the com plus at low revs it whines in time with the revs (But appears to go at higher speed) - All was working last time we were on the bike together, nothing has changed on the bike since.

Re: Autcom - Noise at low revs
 

Where is your Autocom Unit located?

Re: Autcom - Noise at low revs
 

Unit is located under the passenger seat - Unless of course it's slipped?

Re: Autcom - Noise at low revs
 

Sounds a supression issue - could be cured by adding a supression choke, but it worked fine before you say so I'd check the installation over, pay attention to the earthing

Re: Autcom - Noise at low revs
 

I had a bit of a problem with my Starcom too. I put it down to the Suzuki habit of a c15.5v charging voltage which is higher than the approved voltage for many devices. I used a regulated 12v supply which improved things a bit.

I still get the wining but far fewer clicks and weird noises. And everythign runs a lot cooler especially bullet cams.

Is it B2B autocom or R2P? Be interesting if it only fails when you have the weight of a pillion (not saying your missus is fat or anything) could be trapping something under the seat.

Do you have heated grips? Better/worse with them on?

If B2B try without pillion.

If R2P try talking with bike running but both standing next to the bike.

Could also be all sorts of Reg/Rec, generator, other random stuff.

I once had a dodgy headset that used to make the Starcom do all sorts of weird things but only after several hours.

Re: Autcom - Noise at low revs
 

i had no real problems with mine, somtimes i had a wineing sound but that was because i had a audio cable running up past the rear cylinder, if you have a 15.5v then the regulator is not doing a proper job

which version of the starcom do you have?

Re: Autcom - Noise at low revs
 

From Autocom Website

Re: Autcom - Noise at low revs
 

un-balanced cables would be the most likely cause most probable would be the microphone cable.

Re: Autcom - Noise at low revs
 

From the SV1000 manual ...........
Charging output (Regulated voltage) : 14.0 - 15.5 V at 5 000 r/m

Mine is a Starcom advanced although to be honest it's only half wired in.. Is more of a temporary thing that gets plugged in when needed.

Ref the balanced wiring, this is a problem if the device and the autocom are powered from there same source. Something to do with earth loop feedback. If you just have two headsets and/or a battery operated B2B radio I doubt this will cause a problem.

Re: Autcom - Noise at low revs
 

You might find some benefit from a clip-on ferrite (or 2) on suitable cables, like these