Today's Message Index:
----------------------
1. 08:09 AM - Re: MB antenna length (Brian Lloyd)
2. 11:50 AM - Where to install the hall effect sensor (Aart van't Veld)
3. 12:27 PM - SL-30 Nav Audio Connection... (Scott)
4. 01:31 PM - Re: Where to install the hall effect sensor (Ken)
5. 01:45 PM - Re: SL-30 Nav Audio Connection... (Bill Denton)
6. 03:02 PM - ANL current limiters (Craig Mac Arthur)
7. 03:48 PM - Re: SL-30 Nav Audio Connection... (Scott)
8. 07:40 PM - Re: ANL current limiters - Bob need you comment (jerb)
9. 07:51 PM - ANL current limiters - Bob, need your comment. (BobsV35B@aol.com)
Message 1
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Subject: | Re: MB antenna length |
--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
On May 19, 2006, at 8:10 PM, Robert G. Wright wrote:
> --> AeroElectric-List message posted by: "Robert G. Wright"
> <armywrights@adelphia.net>
>
> Where is the source for a 40" MB coax antenna? All I find in the
> Connection
> is a 75" length for a quarter wave balun.
Antennas don't necessarily need to be resonant and/or efficient. If
you have a lot of signal you might not need a lot of antenna.
Consider that a marker beacon transmitter may run 50W of power or so
into a directional antenna beaming it straight up at your airplane.
Now consider that you need to receive it from only a couple thousand
feet away at most. It doesn't take a lot of antenna at the receiver
to pick up that signal.
Frankly, just about any piece of wire will suffice as a marker beacon
antenna.
So, take a piece of coax, strip the shield off of about 40" of it
(length is not critical) and connect the other end to your MB
receiver. Put the unshielded 40" or so where it might be able to see
the ground without to much shielding from the airframe. There is your
MB antenna.
Brian Lloyd 361 Catterline Way
brian-yak AT lloyd DOT com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
Antoine de Saint-Exupry
Message 2
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Subject: | Where to install the hall effect sensor |
--> AeroElectric-List message posted by: "Aart van't Veld" <avtveld@tiscali.nl>
Guys,
I have read all available info in the list on the Hall effect sensor to
measure currents but would like some detailed input and pro's and cons on
the different positions where to put these sensors, be it over battery
cables, bus feeders or alternator b-leads. Your help is appreciated!
Aart van't Veld, RV7, wiring
Message 3
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Subject: | SL-30 Nav Audio Connection... |
--> AeroElectric-List message posted by: "Scott" <scott428@tds.net>
Is the Garmin SL-30 nav audio output (pins 20 and 23) only used if one has
an audio panel? If pins 20 and 23 are not used, is nav audio output on the
com side via pins 13 and 14? Or should the nav audio output (pins 20 and
23) be tied to the headphone circuit? Thanks for saving me the
experimentation.
-Scott Fifield
Message 4
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Subject: | Re: Where to install the hall effect sensor |
--> AeroElectric-List message posted by: Ken <klehman@albedo.net>
Hi Aart
FWIW I put one on the main b-lead. It lets me see how hard the
alternator is working and it still confirms various items are working
(drawing current) similar to the way it would if on the main bus feeder.
I quickly learned to tell how much charging current is going into the
battery by subtracting the normal running loads from the reading. I'd
put it in the same place if doing it again.
Ken
Aart van't Veld wrote:
>--> AeroElectric-List message posted by: "Aart van't Veld" <avtveld@tiscali.nl>
>
>Guys,
>
>I have read all available info in the list on the Hall effect sensor to
>measure currents but would like some detailed input and pro's and cons on
>the different positions where to put these sensors, be it over battery
>cables, bus feeders or alternator b-leads. Your help is appreciated!
>
>
>
>Aart van't Veld, RV7, wiring
>
>
Message 5
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Subject: | SL-30 Nav Audio Connection... |
--> AeroElectric-List message posted by: "Bill Denton" <bdenton@bdenton.com>
As part of the "setup" for the SL30, you are given the option of having the
NAV audio "mixed" with the COM audio. This will make the NAV audio also
appear on pins 13 and 14.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Scott
Sent: Saturday, May 20, 2006 2:24 PM
Subject: AeroElectric-List: SL-30 Nav Audio Connection...
--> AeroElectric-List message posted by: "Scott" <scott428@tds.net>
Is the Garmin SL-30 nav audio output (pins 20 and 23) only used if one has
an audio panel? If pins 20 and 23 are not used, is nav audio output on the
com side via pins 13 and 14? Or should the nav audio output (pins 20 and
23) be tied to the headphone circuit? Thanks for saving me the
experimentation.
-Scott Fifield
Message 6
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Subject: | ANL current limiters |
--> AeroElectric-List message posted by: "Craig Mac Arthur" <jetfr8t@hotmail.com>
I understand that the ANL current limiter installed by the starter contactor
protects the "B" lead from a large current draw from the battery.
My somewhat philosophical question is this: Why not use one to protect the
fat wire from the battery contactor to the main power distribution bus? Of
course, the battery contactor can be manually opened, but there is
recognition time and action required. Also, in the case of an accident that
damages where that wire penetrates the firewall, there is no automatic
protection for that wire.
Craig Mac Arthur
_________________________________________________________________
Is your PC infected? Get a FREE online computer virus scan from McAfee
Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
Message 7
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Subject: | Re: SL-30 Nav Audio Connection... |
--> AeroElectric-List message posted by: "Scott" <scott428@tds.net>
Bill, and Aeroelectric Gang-
Thanks. That's exactly what I wanted to know.
Is it true that when the Nav is selected, the com side is disabled? If so,
the "mixing" of the com and nav on pins 13 and 14 would not be an issue. Is
there any advantage at all to using Nav Audio on pins 20 and 23 if I'm not
using an audio panel?
Thanks again-
Scott Fifield
----- Original Message -----
From: "Bill Denton" <bdenton@bdenton.com>
Sent: Saturday, May 20, 2006 2:42 PM
Subject: RE: AeroElectric-List: SL-30 Nav Audio Connection...
> --> AeroElectric-List message posted by: "Bill Denton"
<bdenton@bdenton.com>
>
> As part of the "setup" for the SL30, you are given the option of having
the
> NAV audio "mixed" with the COM audio. This will make the NAV audio also
> appear on pins 13 and 14.
>
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Scott
> Sent: Saturday, May 20, 2006 2:24 PM
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: SL-30 Nav Audio Connection...
>
>
> --> AeroElectric-List message posted by: "Scott" <scott428@tds.net>
>
> Is the Garmin SL-30 nav audio output (pins 20 and 23) only used if one has
> an audio panel? If pins 20 and 23 are not used, is nav audio output on
the
> com side via pins 13 and 14? Or should the nav audio output (pins 20 and
> 23) be tied to the headphone circuit? Thanks for saving me the
> experimentation.
>
> -Scott Fifield
>
>
Message 8
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Subject: | Re: ANL current limiters - Bob need you comment |
--> AeroElectric-List message posted by: jerb <ulflyer@verizon.net>
I would think the ANL would go on the output lead/terminal of the
alternator to reduce the noise component alternators generate. Time
to see guidance form a higher level, Bob would you mind commenting on
this topic.
jerb
At 04:56 PM 5/20/2006, you wrote:
>--> AeroElectric-List message posted by: "Craig Mac Arthur"
><jetfr8t@hotmail.com>
>
>I understand that the ANL current limiter installed by the starter contactor
>protects the "B" lead from a large current draw from the battery.
>
>My somewhat philosophical question is this: Why not use one to protect the
>fat wire from the battery contactor to the main power distribution bus? Of
>course, the battery contactor can be manually opened, but there is
>recognition time and action required. Also, in the case of an accident that
>damages where that wire penetrates the firewall, there is no automatic
>protection for that wire.
>
>Craig Mac Arthur
>
>_________________________________________________________________
>Is your PC infected? Get a FREE online computer virus scan from McAfee
>Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
>
>
Message 9
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Subject: | ANL current limiters - Bob, need your comment. |
--> AeroElectric-List message posted by: BobsV35B@aol.com
Good Evening jerb
Not sure, but I believe 'Lectric Bob told us he would be off list while he
and his bride were enjoying a trip to conduct a seminar.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 5/20/2006 9:42:30 P.M. Central Standard Time,
ulflyer@verizon.net writes:
--> AeroElectric-List message posted by: jerb <ulflyer@verizon.net>
I would think the ANL would go on the output lead/terminal of the
alternator to reduce the noise component alternators generate. Time
to see guidance form a higher level, Bob would you mind commenting on
this topic.
jerb
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