Today's Message Index:
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1. 07:52 AM - Re: Radio Engine Noise (William Kulpa)
2. 04:37 PM - Re: Re: Pulsar-List Digest: 3 Msgs - 11/18/14 (myrontruex)
Message 1
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| Subject: | Re: Radio Engine Noise |
Look at Mouser;
http://www.mouser.com/Passive-Components/EMI-RFI-Components/EMI-RFI-Suppressors-Ferrites/_/N-bw7t4?P=1yvf2fa&Ns=Pricing|0
These clamp on suppressors are fairly good but some experimentation may
be required. You can also buy ferrite cores and route the power leads
through them, which requires a bit more work but has the potential of
being more effective. I think this is what Bob did. Make sure you have
a good ground between all of your electronics and the engine case, that
may solve your problem by itself.
Best Regards, Bill
On 11/19/2014 8:59 AM, Bernard Wilder wrote:
> Had same problem.
>
> Went to Radio Shack bought a couple noise suppression coils. Ran leads
> from voltage regulator through them. Killed the noise.
>
> Learned that from the electrical engineer at the last Pulsar
> gathering. If he is listening maybe he can be more specific.
>
> Berne Wilder
>
> On Tue, Nov 18, 2014 at 5:07 PM, Mark Fox <saafbusiness@gmail.com
> <mailto:saafbusiness@gmail.com>> wrote:
>
> I have had my Pulsar for a long time...18 years....always has some
> engine noise on transmission
>
> But is seems to be much worse on transmission....engine noise
>
> I am using a handheld Icom radios attached to the dash and always
> had good luck
>
> I think I have an Icon IC-A23 now
>
> Anyone had good luck with noise filters ?
>
> Thanks
>
> --
>
> Mark L. Fox Vice President 321-626-4786
> <http://myesig.com/esig/link-174057.php>
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Message 2
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| Subject: | Re: Pulsar-List Digest: 3 Msgs - 11/18/14 |
Mark, just test the radio with the battery alone. Trying to find the
source of the noise. If that does not improve it then try to bypass the
intercom if possible by connecting directly to the radio interface
cable.
Loose wires in headset plugs can create havoc. Ferrite beads rarely
provide much help.
From: Mark Fox
Sent: Wednesday, November 19, 2014 8:42 AM
Subject: Pulsar-List: Re: Pulsar-List Digest: 3 Msgs - 11/18/14
Thanks Myron
I do have an intercom and yes I am using aircraft power to power the
handheld radio
Are you saying to use the battery inside the radio or run the power
directly to the aircraft battery ?
If will try both but using the internal radio battery requires charging
it constantly of course which is a pain
I will try your other suggestions....as I figured, it is a trail and
error of chasing like most electrical issues:)
Thanks
On Wed, Nov 19, 2014 at 2:59 AM, Pulsar-List Digest Server
<pulsar-list@matronics.com> wrote:
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Pulsar-List Digest Archive
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Total Messages Posted Tue 11/18/14: 3
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Today's Message Index:
----------------------
1. 01:03 AM - Re: Earth X lithium battery in 582 pulsar (Herbert
Schmaderer)
2. 02:08 PM - Radio Engine Noise (Mark Fox)
3. 02:53 PM - Re: Radio Engine Noise (myrontruex)
________________________________ Message 1
_____________________________________
Time: 01:03:53 AM PST US
From: Herbert Schmaderer <herbert.schmaderer@aon.at>
Subject: Re: Pulsar-List: Earth X lithium battery in 582 pulsar
I am useing the Ballistic Performance Components model EV02 on my 912S
since 18 month. Charging voltage is determined by the regulator device
13,6V. Very good start characteristic in winter time, once you get
used
to the specifics of a Lithium battery.
Herbert
OE-CHS
Am 17.11.2014 20:27, schrieb Everett Collier:
> Is anyone else using a lithium battery in their Pulsar?
> I put an Earth X lithium battery in my 582 powered Pulsar. Much
> lighter than the old battery. I only have one flight on it, and am
> doing my annual now, so will be a few days before i fly again. What
I
> am wondering about is that during the flight, I checked the battery
> voltage and it was only showing 12.8 to 12.9 volts. I think i was
> seeing 13.3 before. not sure what is going on and was wondering if
> anyone else is using one.
>
> Everett Collier
> N167EC
> *
>
>
> *
________________________________ Message 2
_____________________________________
Time: 02:08:11 PM PST US
Subject: Pulsar-List: Radio Engine Noise
From: Mark Fox <saafbusiness@gmail.com>
I have had my Pulsar for a long time...18 years....always has some
engine
noise on transmission
But is seems to be much worse on transmission....engine noise
I am using a handheld Icom radios attached to the dash and always had
good
luck
I think I have an Icon IC-A23 now
Anyone had good luck with noise filters ?
Thanks
--
[image: Mark L. Fox Vice President 321-626-4786]
<http://myesig.com/esig/link-174057.php>
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<http://myesig.com/esig/link-174062.php>
myesig.com <http://www.myesig.com/r.php?rc=CEA8A3>
________________________________ Message 3
_____________________________________
Time: 02:53:53 PM PST US
From: "myrontruex" <MyronTruex@comcast.net>
Subject: Re: Pulsar-List: Radio Engine Noise
Mark, are you using power from the airplane or the battery on the
radio?
If you are connected to the aircraft power try unplugging it and
running
it straight from the battery. If you have an intercom installed and it
is powered by the aircraft you could have the noise entering there. My
turn and bank indicator was producing a lot of hash until I did some
filtering inside it.
Your best source for clean power is to run a cable to the battery
where
it can do its job. Yes a filter can help but it can be difficult to
find
just where the noise is being injected into the system. If you have an
intercom and a pigtail on your radio you may be able to bypass the
intercom for a test. Loose screws on the headset plug wires can allow
electrical noise to enter the system too. Clean and tighten all the
connections.
Myron
From: Mark Fox
Sent: Tuesday, November 18, 2014 5:07 PM
Subject: Pulsar-List: Radio Engine Noise
I have had my Pulsar for a long time...18 years....always has some
engine noise on transmission
But is seems to be much worse on transmission....engine noise
I am using a handheld Icom radios attached to the dash and always had
good luck
I think I have an Icon IC-A23 now
Anyone had good luck with noise filters ?
Thanks
--
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