Today's Message Index:
----------------------
1. 02:34 AM - Re: radio noise (bob noffs)
2. 09:47 AM - Surplus xponder antenna (Robert L. Nuckolls, III)
3. 10:04 AM - Re: Surplus xponder antenna (JOHN TIPTON)
4. 10:06 AM - Re: Surplus xponder antenna (Joel Ventura)
5. 10:28 AM - Re: Surplus xponder antenna (John Bright)
6. 11:46 AM - Re: Surplus xponder antenna (Robert L. Nuckolls, III)
7. 11:47 AM - Re: Surplus xponder antenna (SOLD) (Robert L. Nuckolls, III)
8. 11:58 AM - Re: Question (Robert L. Nuckolls, III)
Message 1
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the radio is an icom i200 with an intercom setup.
bob noffs
On Sun, May 5, 2013 at 7:44 PM, David Lloyd <skywagon@charter.net> wrote:
> **
> What kind of radio or navigator....??
>
> ....some of them have built-in staged squelch bands and one or more may
> need sw adjustment if internal set...
>
> ------------------------------
>
> ----- Original Message -----
> *From:* Ed Holyoke <bicyclop@pacbell.net>
> *To:* aeroelectric-list@matronics.com
> *Sent:* Sunday, May 05, 2013 5:18 PM
> *Subject:* Re: AeroElectric-List: radio noise
>
> Sounds like you're breaking squelch. Try adjusting it up a bit.
>
> Ed
>
> On 5/5/2013 4:47 PM, bob noffs wrote:
>
> i have about 65 hrs on my dakota hawk / 3300 jab. up until a couple
> hrs. ago my radio had no unwanted noise. but no more.
> while taxiing or in flight at rpm below about 2000 the radio is quiet. at
> 2800 rpm the static is constant. sounds like you are on an fm frequency
> with no station. there is no whine or change in sound of the noise as rpm
> increases or decreases. what does happen as rpm is dropped is that the
> noise becomes more and more intermittant and less frequent until it
> disappears.the noise disappears when i receive a transmission.
> as i have a wood and cloth plane i have a forest of tabs for all my
> ground wires. coming home from the airport i was thinking the rpm where the
> noise starts is close to where the alternator kicks in. noise pitch is not
> related to rpm though.
> any ideas why this would just start and what may be the cause?
> any ideas appreciated.
> bob noffs
>
> *
>
> *
>
> *
>
> href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Navigator?AeroElectric-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c*
>
> *
>
> *
>
>
Message 2
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| Subject: | Surplus xponder antenna |
Emacs!
New old stock surplus to my needs. First
offer of $15 takes it.
Bob . . .
Message 3
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| Subject: | Re: Surplus xponder antenna |
OK: Bob, if it's still available, I'll take it
John
----- Original Message
----- Original Message -----
From: Robert L. Nuckolls, III
To: aeroelectric-list@matronics.com
Sent: Monday, May 06, 2013 5:46 PM
Subject: AeroElectric-List: Surplus xponder antenna
New old stock surplus to my needs. First
offer of $15 takes it.
Bob . . .
Message 4
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| Subject: | Re: Surplus xponder antenna |
Message 5
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| Subject: | Re: Surplus xponder antenna |
I take it.=0A=0A-=0AJohn Bright=0A=0A=0A>________________________________
=0A> From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>=0A>To:
aeroelectric-list@matronics.com =0A>Sent: Monday, May 6, 2013 12:46 PM=0A>
Subject: AeroElectric-List: Surplus xponder antenna=0A> =0A>=0A>=0A> =0A>
=0A>New old stock surplus to my needs. First=0A>offer of $15 takes it.=0A>
=0A>=0A>- Bob . . .=0A>=0A>
Message 6
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| Subject: | Re: Surplus xponder antenna |
At 12:03 PM 5/6/2013, you wrote:
>OK: Bob, if it's still available, I'll take it
>
Your response got here first. You got it.
I've invoiced you on PayPal.
Bob . . .
Message 7
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| Subject: | Re: Surplus xponder antenna (SOLD) |
At 11:46 AM 5/6/2013, you wrote:
>Emacs!
>
>
>SOLD - Thanks for the responses guys!
Message 8
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At 01:24 PM 5/6/2013, you wrote:
>Hello Bob,
>
>I have a quick question-
>
>Why is it that a radio like a Garmin SL-30
>Nav/Com and a marker beacon like a PS
>Engineering model, have two separate ground
>wires each, i.e. one for the power ground and
>one for the audio ground ' yet those wires end
>up connecting at the same grounding point.
>
>I am curious as to why there has to be two wires
>from each box that end up at the same grounding
>point, instead of the manufacturer wiring these
>two grounds up together internally in the
>device, and then only using one ground wire?
>
>Many thanks,
Not sure what you're referring to. Here's one of serveral
wiring diagrams gleaned from an SL-30 installation manual:
Emacs!
In this case, I suspect that pins 13, 7 and 9 are
all common inside the SL-30 but only pin 9 is used
for attachment to ship's power ground. Pins 13 and
7 become a quasi-single point ground for the audio
system as it relates to the SL-30. Are there other
wiring diagrams that offer a more confusing picture?
Bob . . .
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