Today's Message Index:
----------------------
1. 12:32 AM - Re: Engine Electromagnetic Noise (joeing701@simnet.is)
2. 08:09 AM - Re: Engine Electromagnetic Noise (John Fasching)
3. 09:48 AM - Re: Engine Electromagnetic Noise (joeing701@simnet.is)
Message 1
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| Subject: | Re: Engine Electromagnetic Noise |
Hello John.
Your Zulu headset has a noise activated microphone, so it could be picking up the
sound in your cockpit at high rpm. It should have an adjustment screw to lower
the sensitivity.
Check with Lightspeed for this problem. Sometimes it is just the squelch setting
in the intercom that you can adjust for this problem. Hope this helps.
Johann
----- Upprunalegt skeyti -----
Fr: "John Fasching" <n29cx@ridgeviewtel.us>
Til: rotaxengines-list@matronics.com
Sent: rijudagur, 12. jl, 2011 16:07:12 GMT +00:00 Monrovia
Efni: RotaxEngines-List: Engine Electromagnetic Noise
RV-12 w/ Rotax 921ULS operating normally. At lower rpm no abnormal noice in the
headset. Upon takeoff lots of noise...crackling, spitting, arcing type noise.
Radio turned off makes no difference, so it seems to be some radiation getting
directly into the Zulu headset, perhaps via the intercom which is yet to be
fully explored.
When reducing throttle the noise disappears...its only at higher rpms.
Have you encountered this? If so, what resolution was found? I can fly the plane
and just put up with the noise which isn't all that terrible, but want to clear
it up. No electrical oddities have been noted.
Thanks for any tips.
Message 2
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| Subject: | Re: Engine Electromagnetic Noise |
Johann - you hit it on the head ! I flew this morning with a non-noise
reducing headset and there was no noise. I changed to Zulu ANR, fiddled with
the squelch on the intercom, sensitivity on the ANR and problem gone !
Thanks for the help !!!
JohnF
----- Original Message -----
From: <joeing701@simnet.is>
Sent: Wednesday, July 13, 2011 1:29 AM
Subject: Re: RotaxEngines-List: Engine Electromagnetic Noise
> <joeing701@simnet.is>
>
> Hello John.
>
> Your Zulu headset has a noise activated microphone, so it could be picking
> up the sound in your cockpit at high rpm. It should have an adjustment
> screw to lower the sensitivity.
> Check with Lightspeed for this problem. Sometimes it is just the squelch
> setting in the intercom that you can adjust for this problem. Hope this
> helps.
>
> Johann
>
>
> ----- Upprunalegt skeyti -----
> Fr: "John Fasching" <n29cx@ridgeviewtel.us>
> Til: rotaxengines-list@matronics.com
> Sent: rijudagur, 12. jl, 2011 16:07:12 GMT +00:00 Monrovia
> Efni: RotaxEngines-List: Engine Electromagnetic Noise
>
>
> RV-12 w/ Rotax 921ULS operating normally. At lower rpm no abnormal noice
> in the headset. Upon takeoff lots of noise...crackling, spitting, arcing
> type noise. Radio turned off makes no difference, so it seems to be some
> radiation getting directly into the Zulu headset, perhaps via the intercom
> which is yet to be fully explored.
>
> When reducing throttle the noise disappears...its only at higher rpms.
>
> Have you encountered this? If so, what resolution was found? I can fly the
> plane and just put up with the noise which isn't all that terrible, but
> want to clear it up. No electrical oddities have been noted.
>
> Thanks for any tips.
>
>
>
Message 3
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| Subject: | Re: Engine Electromagnetic Noise |
Hello John.
Glad I could help. I like the Lightspeed headsets. Makes all the difference with
the ANR.
Best regards,
Johann G.
Iceland.
----- Upprunalegt skeyti -----
Fr: "John Fasching" <n29cx@ridgeviewtel.us>
Til: rotaxengines-list@matronics.com
Sent: Mivikudagur, 13. jl, 2011 15:05:30 GMT +00:00 Monrovia
Efni: Re: RotaxEngines-List: Engine Electromagnetic Noise
Johann - you hit it on the head ! I flew this morning with a non-noise
reducing headset and there was no noise. I changed to Zulu ANR, fiddled with
the squelch on the intercom, sensitivity on the ANR and problem gone !
Thanks for the help !!!
JohnF
----- Original Message -----
From: <joeing701@simnet.is>
Sent: Wednesday, July 13, 2011 1:29 AM
Subject: Re: RotaxEngines-List: Engine Electromagnetic Noise
> <joeing701@simnet.is>
>
> Hello John.
>
> Your Zulu headset has a noise activated microphone, so it could be picking
> up the sound in your cockpit at high rpm. It should have an adjustment
> screw to lower the sensitivity.
> Check with Lightspeed for this problem. Sometimes it is just the squelch
> setting in the intercom that you can adjust for this problem. Hope this
> helps.
>
> Johann
>
>
> ----- Upprunalegt skeyti -----
> Fr: "John Fasching" <n29cx@ridgeviewtel.us>
> Til: rotaxengines-list@matronics.com
> Sent: rijudagur, 12. jl, 2011 16:07:12 GMT +00:00 Monrovia
> Efni: RotaxEngines-List: Engine Electromagnetic Noise
>
>
> RV-12 w/ Rotax 921ULS operating normally. At lower rpm no abnormal noice
> in the headset. Upon takeoff lots of noise...crackling, spitting, arcing
> type noise. Radio turned off makes no difference, so it seems to be some
> radiation getting directly into the Zulu headset, perhaps via the intercom
> which is yet to be fully explored.
>
> When reducing throttle the noise disappears...its only at higher rpms.
>
> Have you encountered this? If so, what resolution was found? I can fly the
> plane and just put up with the noise which isn't all that terrible, but
> want to clear it up. No electrical oddities have been noted.
>
> Thanks for any tips.
>
>
>
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